区域变质和接触变质有什么不同？
What distinguishes regional from contact metamorphism?
接触变质发生在岩浆侵入体周围，热量使围岩在狭窄的接触晕内重结晶，温度高而压力低，形成角岩等，不含定向构造。区域变质是造山运动中大范围深埋加压加温的结果，分布面积广大，常伴随板岩、片岩、片麻岩等，特征是矿物定向排列的片理构造。两种作用都靠矿物重结晶实现，但温压组合和空间尺度截然不同，变质程度还可以用温压计定量估计。
Contact metamorphism occurs in a narrow halo around an igneous intrusion, where heat alone recrystallizes the host rock under low pressure into hornfels and other rocks without foliation. Regional metamorphism accompanies mountain building, where rocks are deeply buried, squeezed, and heated over vast areas, producing slate, schist, and gneiss with a characteristic foliation from aligned minerals. Both rely on recrystallization, but their temperature-pressure conditions and spatial scales differ sharply, and metamorphic grade can be quantified with thermobarometers.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-10-03
来源 · Source
《普通地质学》
General Geology (Shu Liangshu)
#变质作用 #片理 #角岩
地质年代表是如何划分的？
How is the geologic time scale divided?
依据地层、化石和放射性同位素定年，将地球历史分为宙、代、纪、世等层级，反映生命和环境的重大变化。
Based on strata, fossils and radiometric dating, Earth's history is divided into eons, eras, periods and epochs reflecting major changes in life and environment.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
舒良树 主编,《普通地质学》第3版(曾获全国首届优秀教材一等奖)
Shu Liangshu ed., General Geology, 3rd ed. (winner of the 1st National Excellent Textbook Award)
独立核验依据 · Independent verification: 核验依据 2 ISBN 9787116123892（豆瓣书目条目: 普通地质学）
#地质 #地质年代
三角洲的垂向沉积序列说明什么？
What does a delta's vertical sequence tell us?
三角洲垂向序列把水深变化翻译成岩性。同一地点向上变粗，说明离河口渐近、水变浅，三角洲向海推进，即空间增长赶不上来沙，或相对海平面在降，属海退序列；向上变细则相反，是海水侵入的海进序列。岩芯配上水深指示的化石与波痕，能重建古海岸线与升降方向。谨慎在于：来沙增多与海平面下降能造出同样的向上变粗，序列本身分不开。
A delta's vertical sequence translates changes in water depth into rock type. Coarsening upward at one place means it was shallowing and nearing the river mouth, the delta prograding seaward because space for sediment grew more slowly than the sand supply or relative sea level was falling, a regressive sequence; fining upward is the opposite, a transgressive one in which the sea floods in. Cores plus depth-indicating fossils and ripples let you restore the ancient shoreline and the sense of uplift. The caution is that more sand and a falling sea level make the same coarsening-up, and the sequence alone cannot tell them apart.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
舒良树 主编,《普通地质学》第3版(曾获全国首届优秀教材一等奖)
Shu Liangshu ed., General Geology, 3rd ed. (winner of the 1st National Excellent Textbook Award)
独立核验依据 · Independent verification: 核验依据 2 ISBN 9787116123892（豆瓣书目条目: 普通地质学）
#地质 #三角洲
为什么外核的对流能维持地球磁场？固体内核在其中起什么作用？
Why does outer-core convection sustain Earth's magnetic field, and what role does the solid inner core play?
外核是导电流体，其湍流对流在科里奥利力作用下形成螺旋运动，通过自激发电机过程把机械能转化为磁能。内核凝固释放潜热并排出轻元素（如氧、硫），为外核对流提供热—组成双层驱动：轻元素上升与热量耗散共同维持强烈的对流。内核还起稳定作用，使极性倒转更有规律；若外核停止对流，磁场会在数万年内衰减消失。地震层析与数值模拟还表明，内核的不对称生长可能使对流呈现非对称形态，影响磁场的长期行为。
The outer core is a conducting fluid whose turbulent, Coriolis-driven helical convection generates magnetic energy from mechanical energy through a self-exciting dynamo. Inner-core crystallization releases latent heat and expels light elements (oxygen, sulfur), providing both thermal and compositional buoyancy that drives convection. The solid core also stabilizes the system, making reversals more regular; without outer-core convection, the field would decay away within tens of thousands of years. Seismic tomography and numerical dynamo simulations further suggest that asymmetric growth of the inner core shapes the convection pattern and influences the field's long-term behavior.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 来源待核验 · Source pending review
来源 · Source
出处备注：此条未指向带版次的可引用著作（通识性内容、机构文件或未展开的英文书名），本库不提供独立书目出处；如需精确引用，需由编辑补全具体篇目与版次。
Nature（地球发电机研究）
Nature (geodynamo research)
#地球磁场 #发电机效应 #外核
片麻岩中为什么常呈现黑白相间的条带状构造？它与板岩的板理有何不同？
Why do gneisses commonly show alternating light and dark bands, and how does this differ from slaty cleavage?
在高温高压条件下，浅色长英质矿物（长石、石英）与暗色镁铁质矿物（黑云母、角闪石）发生分离并分别集中成条带，形成片麻状构造。这种分带是变质分异的结果：高温塑性变形下矿物经压溶、扩散与重结晶，在应力方向分别富集，而非仅靠片状矿物的机械旋转定向。与板理相比，片麻状构造对应更高的变质级别，温度继续升高时岩石还可局部熔融形成混合岩。
Under high-grade conditions, light felsic minerals (feldspar, quartz) and dark mafic minerals (biotite, hornblende) segregate into distinct bands, producing gneissic banding. The banding results from metamorphic differentiation: under high-temperature plastic deformation, pressure solution, diffusion, and recrystallization concentrate minerals separately along the stress direction, not merely by mechanical rotation of platy minerals. Compared with slaty cleavage, gneissic banding marks a higher metamorphic grade, and with further heating the rock partially melts to form migmatite.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-10-03 · 2 条独立证据
来源 · Source
《普通地质学》(舒良树)
General Geology (Shu Liangshu)
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787116064911（按标识回读: 普通地质学）
#变质岩 #片麻岩 #混合岩
什么是蛇绿岩套？
What is an ophiolite?
蛇绿岩套是洋壳和地幔岩被推到陆上的完整剖面，是证明板块曾俯冲、大陆碰撞的关键证据。
An ophiolite is ocean crust and mantle thrust onto land, key evidence of subduction and collision.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
舒良树 主编,《普通地质学》第3版(曾获全国首届优秀教材一等奖)
Shu Liangshu ed., General Geology, 3rd ed. (winner of the 1st National Excellent Textbook Award)
独立核验依据 · Independent verification: 核验依据 2 ISBN 9787116123892（豆瓣书目条目: 普通地质学）
#地质 #蛇绿岩
什么是超基性岩？
What are ultramafic rocks?
超基性岩富含铁镁矿物、几乎不含石英，如橄榄岩，主要来自上地幔，是地壳最少的岩石类。
Ultramafic rocks like peridotite are iron-magnesium rich, nearly quartz-free, from the upper mantle.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
舒良树 主编,《普通地质学》第3版(曾获全国首届优秀教材一等奖)
Shu Liangshu ed., General Geology, 3rd ed. (winner of the 1st National Excellent Textbook Award)
独立核验依据 · Independent verification: 核验依据 2 ISBN 9787116123892（豆瓣书目条目: 普通地质学）
#地质 #超基性岩
什么是地层学和标准化石？
What are stratigraphy and index fossils?
地层学研究岩层的顺序及其所记录的时间信息，是确立相对地质年代的基础。标准化石是生存时间短、分布广、特征明显的化石，可用来快速对比不同地点地层的相对年龄。
Stratigraphy studies the layering of rocks and the time information they record, forming the basis for relative geologic dating. Index fossils are those with short lifespans, wide distribution, and distinctive features, used to correlate the relative ages of strata at different sites.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
舒良树 主编,《普通地质学》第3版(曾获全国首届优秀教材一等奖)
Shu Liangshu ed., General Geology, 3rd ed. (winner of the 1st National Excellent Textbook Award)
独立核验依据 · Independent verification: 核验依据 2 ISBN 9787116123892（豆瓣书目条目: 普通地质学）
#地层学 #标准化石 #相对定年
冰川是如何塑造地形的？
How do glaciers shape the landscape?
冰川不是静止的冰，而是靠自重流动、底部融水润滑的固体河流。它啃噬基岩有两个办法：冻在冰底的砾石像砂纸磨过冰床；渗进裂隙的水反复融冻，把岩块撬起拔出并带走，这叫刨蚀。冰运的碎屑不分选不分层，黏土与巨石混在一起，巨石能被推到远离母岩之处，流水做不到。认地貌要把挖与堆分开：U形谷、冰斗、角峰是侵蚀产物，碛垄与鼓丘是堆积产物。
A glacier is not standing ice but a solid river that moves under its own weight, lubricated by meltwater at its bed. It attacks bedrock two ways: gravel frozen into the base scours the floor like sandpaper, and water refreezing in cracks pries blocks loose and rips them out, which is plucking. Its load is unsorted and unlayered, clay and boulders mixed together, and a boulder can be pushed far from the rock it came from, something running water cannot do. When reading the landforms, separate digging from dumping: U-shaped valleys, cirques and horns are eroded, while moraine ridges and drumlins are piled up.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
舒良树 主编,《普通地质学》第3版(曾获全国首届优秀教材一等奖)
Shu Liangshu ed., General Geology, 3rd ed. (winner of the 1st National Excellent Textbook Award)
独立核验依据 · Independent verification: 核验依据 2 ISBN 9787116123892（豆瓣书目条目: 普通地质学）
#地质 #冰川地貌
磁性地层学如何给岩石定年？
How does magnetostratigraphy date rocks?
沉积落底或岩浆冷却时，岩石里的磁性矿物顺着当时地磁场取向并留住方向；地磁场极性还会正反交替，连续地层里就留下正、逆相间的磁化带。测出剖面磁化方向的变化，与标准极性年表比对，地层便有了年代框架。它自己不产出绝对年龄，年表靠海底磁异常条带加同位素定年标定；前提是层序连续、未倒转、无缺失，构造翻转和沉积间断都会让对比串位。
As sediment settles or magma cools, the magnetic minerals in the rock align with the field of the moment and lock its direction in; because the geomagnetic field reverses polarity, an unbroken sequence of strata becomes alternating bands of normal and reversed magnetization. Measure how the direction changes up a section and match that pattern to the standard polarity timescale, and the beds gain an age framework. The method yields no absolute age of its own—that timescale must be calibrated from seafloor magnetic anomalies plus radiometric dates. It also assumes continuous, unoverturned strata: folding or a sedimentary hiatus puts the correlation out of place.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
舒良树 主编,《普通地质学》第3版(曾获全国首届优秀教材一等奖)
Shu Liangshu ed., General Geology, 3rd ed. (winner of the 1st National Excellent Textbook Award)
独立核验依据 · Independent verification: 核验依据 2 ISBN 9787116123892（豆瓣书目条目: 普通地质学）
#磁性地层 #定年
侵入岩和喷出岩有什么不同？
What is the difference between intrusive and extrusive rock?
岩浆在地下缓慢冷却成侵入岩（如花岗岩），晶体粗大；喷出地表快速冷却成喷出岩（如玄武岩），晶体细或成玻璃。
Magma cooling slowly underground forms intrusive rock (e.g. granite) with coarse crystals; erupting and cooling fast forms extrusive rock (e.g. basalt) with fine or glassy texture.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
舒良树 主编,《普通地质学》第3版(曾获全国首届优秀教材一等奖)
Shu Liangshu ed., General Geology, 3rd ed. (winner of the 1st National Excellent Textbook Award)
独立核验依据 · Independent verification: 核验依据 2 ISBN 9787116123892（豆瓣书目条目: 普通地质学）
#地质 #火成岩
石油和天然气是怎样生成的？
How do oil and natural gas form?
海洋浮游生物遗骸在缺氧细泥中埋藏，经深埋升温演变成烃类，并在孔隙岩中运移聚集到圈闭里成矿。
Marine plankton buried in anoxic mud matures into hydrocarbons under heat and pressure, then migrates and pools in reservoir traps.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
舒良树 主编,《普通地质学》第3版(曾获全国首届优秀教材一等奖)
Shu Liangshu ed., General Geology, 3rd ed. (winner of the 1st National Excellent Textbook Award)
独立核验依据 · Independent verification: 核验依据 2 ISBN 9787116123892（豆瓣书目条目: 普通地质学）
#油气 #烃源岩
什么是喀斯特地貌？
What is karst landform?
可溶性岩石（如石灰岩）被水溶蚀形成溶洞、天坑、石林等，我国桂林、云南石林是典型。
Soluble rock like limestone is dissolved by water to form caves, sinkholes and stone forests; Guilin and Yunnan's stone forest in China are typical.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
舒良树 主编,《普通地质学》第3版(曾获全国首届优秀教材一等奖)
Shu Liangshu ed., General Geology, 3rd ed. (winner of the 1st National Excellent Textbook Award)
独立核验依据 · Independent verification: 核验依据 2 ISBN 9787116123892（豆瓣书目条目: 普通地质学）
#地质 #喀斯特
三叶虫的眼睛由方解石构成，这对它们的化石保存与研究有何意义？
Trilobite eyes were made of calcite. What does this mean for their fossilization and study?
三叶虫复眼的晶状体由方解石单晶构成，方解石的双折射等晶体光学性质本会使光线分离成像，但三叶虫将晶状体的光轴精确控制在垂直于透镜表面的方向，从而避免了重影，实现了能聚焦成像的矫正镜片。因为晶状体本身是矿物，比软组织更容易石化，数亿年前的晶状体结构与光学设计至今仍可用显微技术研究。这一发现成为自然光学工程的经典案例，也说明复杂的光学系统早在寒武纪就已演化出现。
The lenses of trilobite compound eyes are single calcite crystals; calcite's birefringence would normally split images, but trilobites oriented the lens optic axis precisely perpendicular to the lens surface, avoiding double images and producing corrective lenses that focus light. Because the lenses are themselves minerals, they fossilize far more readily than soft tissue, so lens structure and optical design from hundreds of millions of years ago can still be studied microscopically. This makes them a classic case of natural optical engineering and shows that sophisticated optics evolved already in the Cambrian.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 来源待核验 · Source pending review
来源 · Source
出处备注：此条未指向带版次的可引用著作（通识性内容、机构文件或未展开的英文书名），本库不提供独立书目出处；如需精确引用，需由编辑补全具体篇目与版次。
Nature（三叶虫复眼结构研究）
Nature (trilobite eye structure research)
#三叶虫 #方解石 #化石保存
从孤立岛状到三维骨架状硅酸盐，矿物硬度和解理为何呈现系统性变化？
From isolated island silicates to three-dimensional framework silicates, why do hardness and cleavage change systematically?
聚合程度主要决定内部键合方式、解理与定向硬度，但硬度并不随聚合程度单调增加：架状硅酸盐（石英）在所有方向都硬，片状硅酸盐（云母）因层间键弱而在垂直片层方向极软。橄榄石虽是岛状硅酸盐，但因晶格致密堆积，硬度（约6.5–7）反而高于链状的辉石和角闪石（约5–6）。解理方向完全受四面体链或面取向控制——辉石沿单链呈约90°的两组解理，角闪石沿双链呈约120°解理，云母沿片层呈完全解理。
Polymerization chiefly controls bonding, cleavage, and directional hardness, but hardness does not rise monotonically with it: framework silicates (quartz) are hard in all directions, while sheet silicates (mica) are very soft normal to the sheets because interlayer bonds are weak. Olivine, though an island silicate, is actually harder (about 6.5–7) than chain silicates such as pyroxene and amphibole (about 5–6) owing to its densely packed lattice. Cleavage direction is set by the orientation of tetrahedral chains or sheets—pyroxene cleaves in two directions at about 90 degrees along single chains, amphibole at about 120 degrees along double chains, and mica perfectly parallel to its sheets.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-10-03 · 2 条独立证据
来源 · Source
《普通地质学》(舒良树)
General Geology (Shu Liangshu)
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787116064911（按标识回读: 普通地质学）
#硅酸盐结构 #聚合度 #解理
支持“小行星撞击导致恐龙灭绝”的主要证据有哪些？
What are the main lines of evidence supporting the asteroid-impact theory for dinosaur extinction?
核心证据包括：希克苏鲁伯撞击坑的年代（约6600万年前）与K-Pg界线重合；全球K-Pg界线上富含铱的薄黏土层（铱在地壳中稀少但富集于陨石）；冲击石英、玻璃陨石和撞击球粒等撞击产物。铱的全球富集量与希克苏鲁伯撞击体的陨石成分相符，而冲击石英只产生于超高速撞击，排除了单纯的火山成因。界线处花粉组合突变以及反映全球野火（烟灰层）和海啸的沉积记录，共同表明撞击引发了全球性大火、遮天蔽日与生态崩溃，形成完整的证据链。
Key evidence includes: the Chicxulub impact crater dated to about 66 million years ago, matching the K-Pg boundary; a thin iridium-rich clay layer at the global boundary (iridium is rare in the crust but abundant in meteorites); and impact products such as shocked quartz, tektites, and impact spherules. The globally estimated iridium inventory matches the meteoritic composition of the Chicxulub impactor, and shocked quartz is produced only by hypervelocity impacts, ruling out a purely volcanic origin. Abrupt pollen changes at the boundary together with soot layers recording global wildfires and deposits recording tsunamis show that the impact triggered worldwide fire, dust-induced darkness, and ecological collapse, completing a coherent chain of evidence.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 来源待核验 · Source pending review
来源 · Source
出处备注：此条未指向带版次的可引用著作（通识性内容、机构文件或未展开的英文书名），本库不提供独立书目出处；如需精确引用，需由编辑补全具体篇目与版次。
Science（K-Pg界线与撞击研究）
Science (K-Pg boundary impact research)
#恐龙灭绝 #小行星撞击 #铱异常
铀-铅测年为什么能测定最古老矿物的年龄？
Why can uranium-lead dating determine the age of the oldest minerals?
铀-238和铀-235分别以约45亿年和7亿年的半衰期衰变成铅-206和铅-207，两组独立衰变互为校验。锆石晶体在形成时几乎不含铅，却牢固锁住铀，且极耐风化侵蚀，是理想的测年矿物。测出样品中铀铅比并代入衰变方程即可算出结晶年龄；若两组数据不一致，则提示锆石曾发生铅丢失或体系扰动。西澳大利亚杰克山发现的约44亿年锆石就是用这种方法测出的，是目前已知最古老的地球物质。
Uranium-238 and uranium-235 decay to lead-206 and lead-207 with half-lives of about 4.5 and 0.7 billion years, giving two independent clocks that cross-check each other. Zircon crystals incorporate almost no lead when they form yet firmly retain uranium and survive weathering, making them ideal for dating. Measuring the U/Pb ratios and plugging them into the decay equations yields the crystallization age; disagreement between the two systems signals lead loss or disturbance. Zircons from Jack Hills, Western Australia, dated this way at about 4.4 billion years, are among the oldest known Earth materials.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
舒良树 主编,《普通地质学》第3版(曾获全国首届优秀教材一等奖)
Shu Liangshu ed., General Geology, 3rd ed. (winner of the 1st National Excellent Textbook Award)
独立核验依据 · Independent verification: 核验依据 2 ISBN 9787116123892（豆瓣书目条目: 普通地质学）
#铀-铅测年 #锆石 #同位素地质年代
月球高地的斜长岩与月海的玄武岩分别记录了月球早期演化的哪些阶段？
What stages of early lunar evolution do the highland anorthosites and mare basalts record, respectively?
斜长岩高地记录月球岩浆洋阶段：约44亿年前月球外部大部分熔融，密度较小的斜长石浮到表面结晶成白色高地，暗色矿物沉入月幔。其后内部放射性生热引发部分熔融，基性岩浆沿撞击盆地裂隙涌出，填充低洼处形成玄武岩月海，其绝对年龄（约39–31亿年前）与撞击盆地的形成时间吻合，为内太阳系晚大轰炸假说提供了时间锚点。两类岩石在成分与分布上的差异是月球岩浆洋假说的直接证据，并由阿波罗与嫦娥任务返回的样本得到验证。
Highland anorthosites record the lunar magma-ocean stage: about 4.4 billion years ago much of the Moon's exterior was molten, and less-dense plagioclase floated to the surface, crystallizing the bright highlands while dense minerals sank into the mantle. Later radiogenic heating caused partial melting; mafic magma erupted along impact-basin fractures and filled lowlands as mare basalts, whose absolute ages (about 3.1–3.9 billion years) match the formation of the basins they fill, anchoring the inner solar system's late heavy bombardment hypothesis. The compositional and distributional differences between the two rock types are direct evidence for the lunar magma-ocean hypothesis, confirmed by samples returned by Apollo and Chang'e missions.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 来源待核验 · Source pending review
来源 · Source
出处备注：此条未指向带版次的可引用著作（通识性内容、机构文件或未展开的英文书名），本库不提供独立书目出处；如需精确引用，需由编辑补全具体篇目与版次。
Nature（月球岩浆洋岩石学证据）
Nature (lunar magma ocean petrology)
#月球岩浆洋 #斜长岩 #月海玄武岩
为什么火星失去了大部分大气？这与它的内部演化有什么关系？
Why did Mars lose most of its atmosphere, and how does this relate to its internal evolution?
火星早期就失去了全球偶极磁场，推测约40亿年前其发电机停转，原因是内核冷却、对流减弱。失去磁屏蔽后，太阳风和高能粒子直接剥离大气（主要是离子逃逸），带走大部分CO₂和水；MAVEN任务证实这一过程至今仍在进行。氩同位素测量显示火星大气中⁴⁰Ar丰度远低于地幔脱气应产生的量，说明早期大气大部分已经逃逸。大气变薄使液态水无法稳定存在，火星最终演变成寒冷荒漠，其气候演化与内部动力学深度耦合。
Mars lost its global dipole field early—the dynamo is thought to have stalled about 4 billion years ago as its core cooled and convection weakened. Without the magnetic shield, the solar wind and energetic particles stripped the atmosphere (mainly ion escape), carrying away most CO₂ and water; the MAVEN mission confirms the process continues today. Argon-isotope measurements show far less ⁴⁰Ar in the Martian atmosphere than mantle degassing should have produced, indicating that most of the early atmosphere is already gone. The thinning atmosphere made liquid water unstable, turning Mars into a cold desert, with its climate evolution tightly coupled to its internal dynamics.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
舒良树 主编,《普通地质学》第3版(曾获全国首届优秀教材一等奖)
Shu Liangshu ed., General Geology, 3rd ed. (winner of the 1st National Excellent Textbook Award)
独立核验依据 · Independent verification: 核验依据 2 ISBN 9787116123892（豆瓣书目条目: 普通地质学）
#火星大气 #太阳风 #MAVEN
放射性定年法的基本原理是什么？
What is the basic principle of radiometric dating?
放射性定年法利用某些同位素（如铀-238）以固定半衰期衰变为子同位素（如铅-206）的规律来推算岩石年龄。通过测量母同位素与子同位素的比例，结合已知的衰变常数即可计算样品形成至今的时间。
Radiometric dating uses the fact that certain isotopes, such as uranium-238, decay to daughter isotopes like lead-206 at a fixed half-life. By measuring the parent-to-daughter ratio and applying the known decay constant, scientists calculate how long ago the sample formed.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
舒良树 主编,《普通地质学》第3版(曾获全国首届优秀教材一等奖)
Shu Liangshu ed., General Geology, 3rd ed. (winner of the 1st National Excellent Textbook Award)
独立核验依据 · Independent verification: 核验依据 2 ISBN 9787116123892（豆瓣书目条目: 普通地质学）
#放射性定年 #半衰期 #同位素
蓝晶石、红柱石和矽线石的化学成分相同（Al₂SiO₅），为什么它们出现在不同变质级别的岩石中？
Kyanite, andalusite, and sillimanite share the same composition (Al₂SiO₅), yet occur in rocks of different metamorphic grade. Why?
它们是同质多象变体（多形），各自只在特定的温度—压力区间内稳定：蓝晶石是低温高压相，红柱石是低压相，矽线石是高温相。三种矿物的稳定域在温压图上交汇于一个三重点，因此它们被用作变质指示矿物：地质学家根据岩石中出现的是蓝晶石、红柱石还是矽线石，即可推断岩石经历的温压条件。例如巴罗式区域变质带中，从低绿片岩相到角闪岩相依次出现绿泥石、黑云母、蓝晶石，最后出现矽线石，指示变质级别逐步升高。
They are polymorphs, each stable only within a specific pressure–temperature field: kyanite is the high-pressure low-temperature phase, andalusite the low-pressure phase, and sillimanite the high-temperature phase. Their stability fields meet at a triple point on the P-T diagram, which is why they serve as metamorphic index minerals: identifying whether kyanite, andalusite, or sillimanite occurs lets geologists infer the P-T conditions the rock experienced. In Barrovian metamorphic zones, for example, the sequence chlorite→biotite→kyanite→sillimanite marks steadily rising metamorphic grade.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-10-03 · 2 条独立证据
来源 · Source
《普通地质学》(舒良树)
General Geology (Shu Liangshu)
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787116064911（按标识回读: 普通地质学）
#变质作用 #多形 #指示矿物
什么是自由空气重力异常和布格重力异常？它们分别揭示什么？
What are free-air and Bouguer gravity anomalies, and what does each reveal?
自由空气异常是实测重力与理想椭球体参考值之差且不扣除地形质量，主要反映地形与深部质量的综合影响，如山区出现正异常可能暗示深部质量补偿不足；布格异常先扣除地形质量，因而主要反映地下密度的横向变化——沉积盆地下方呈负异常，致密基岩和俯冲板片呈正异常。解释时需两者配合：在均衡补偿良好的地区，山区自由空气异常近于零，而布格异常显著为负（地壳厚根）。因此布格异常直接用于刻画莫霍面起伏、盆地充填与俯冲板片等深部结构，这一方法广泛用于找矿和地壳结构研究。
Free-air anomalies are observed gravity minus the ellipsoid reference without terrain correction, capturing the combined effect of topography and deep mass—positive values in mountains may indicate incomplete isostatic compensation; Bouguer anomalies subtract the terrain mass first, so they mainly image lateral density variations—sedimentary basins show negative anomalies, dense basement and subducted slabs positive ones. The two must be interpreted together: where isostatic compensation is complete, mountain free-air anomalies are near zero while Bouguer anomalies are strongly negative over the crustal root. Bouguer anomalies therefore map Moho depth, basin fill, and subducted slabs directly, and both are widely used in mineral exploration and crustal studies.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
舒良树 主编,《普通地质学》第3版(曾获全国首届优秀教材一等奖)
Shu Liangshu ed., General Geology, 3rd ed. (winner of the 1st National Excellent Textbook Award)
独立核验依据 · Independent verification: 核验依据 2 ISBN 9787116123892（豆瓣书目条目: 普通地质学）
#重力异常 #布格异常 #地球物理勘探
什么是均衡回弹？更新世冰盖如何塑造了现代地貌？
What is isostatic rebound and how did Pleistocene ice sheets shape modern landscapes?
均衡回弹是地壳在冰盖消融卸载后缓慢抬升的过程，如斯堪的纳维亚至今仍以每年约1厘米上升。更新世反复冰进冰退不仅刻蚀出冰蚀湖与鼓丘，还改变了海岸线与河流基准面。
Isostatic rebound is the slow uplift of crust after the weight of an ice sheet is removed, as seen in Scandinavia still rising about 1 cm per year. Repeated Pleistocene glaciations carved glacial lakes and drumlins and shifted coastlines and river base levels.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-11-03
来源 · Source
Press & Siever《理解地球》第6版（Freeman）
Press, F. & Siever, R., Understanding Earth (6th ed., W.H. Freeman)
独立核验依据 · Independent verification: 核验依据 1 OPENLIBRARY 标识 /works/OL1282939W：Understanding earth（首版
#均衡回弹 #更新世 #冰蚀地貌
为什么热带土壤常呈红色且富含铁铝氧化物？
Why are tropical soils commonly red and rich in iron and aluminum oxides?
高温多雨条件下硅酸盐矿物被强烈水解，盐基离子（K、Na、Ca、Mg）和硅被大量淋失，难溶的铁铝氧化物（赤铁矿、三水铝石）相对富集，赤铁矿使土壤呈红色。这类高度风化的砖红壤因盐基被淋失而呈酸性、肥力较低，植被主要依赖表层的有机质与养分循环。深部的铁铝氧化物还能吸附固定磷和重金属，影响养分有效性，同时这些土壤封存着大量稳定的有机质，是理解热带碳库与成土过程的关键。
Under high temperature and rainfall, silicate minerals hydrolyze intensely; base cations (K, Na, Ca, Mg) and silica are largely leached away, while insoluble iron and aluminum oxides (hematite, gibbsite) concentrate, hematite giving the soil its red color. These highly weathered lateritic soils are acidic and low in fertility because bases have been stripped out, so vegetation depends mainly on surface organic matter and nutrient cycling. Deep iron-aluminum oxides also adsorb and fix phosphorus and heavy metals, controlling nutrient availability, while these soils store large amounts of stabilized organic matter—key to understanding tropical carbon pools and pedogenesis.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 来源待核验 · Source pending review
来源 · Source
出处备注：此条未指向带版次的可引用著作（通识性内容、机构文件或未展开的英文书名），本库不提供独立书目出处；如需精确引用，需由编辑补全具体篇目与版次。
中国科学院（热带土壤风化研究）
Chinese Academy of Sciences (tropical soil weathering research)
#红壤 #砖红壤 #风化
纹泥（季候泥）记录了什么？
What do varves record?
冰川湖每年夏季沉积浅色粗粒、冬季沉积深色细粒，形成一对纹泥，数层数就能读出逐年气候与冰川活动。
Glacial lakes lay down a light coarse summer layer and dark fine winter layer each year; counting varve pairs reveals annual climate and ice activity.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
舒良树 主编,《普通地质学》第3版(曾获全国首届优秀教材一等奖)
Shu Liangshu ed., General Geology, 3rd ed. (winner of the 1st National Excellent Textbook Award)
独立核验依据 · Independent verification: 核验依据 2 ISBN 9787116123892（豆瓣书目条目: 普通地质学）
#纹泥 #年层
形成土壤的主要因素有哪些？
What are the main factors that form soil?
经典的五因素为母质、气候、生物、地形和时间。母质决定矿物组成基础；气候（温度与降水）控制风化速度；生物提供有机质并改善结构；地形影响排水与侵蚀；时间决定发育程度。同一母质在不同气候下会形成截然不同的土壤。
The classic five factors are parent material, climate, organisms, topography, and time. Parent material sets the mineral base; climate (temperature and precipitation) controls weathering rates; organisms supply organic matter and improve structure; topography governs drainage and erosion; and time determines the degree of development. Identical parent materials under different climates yield very different soils.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-10-03 · 2 条独立证据
来源 · Source
《普通地质学》(舒良树)
General Geology (Shu Liangshu)
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787116064911（按标识回读: 普通地质学）
#成土因素 #土壤发生 #母质
矿物和岩石有什么区别？
What is the difference between a mineral and a rock?
矿物是具有确定化学成分和晶体结构的天然无机固体，例如石英和长石。岩石则是由一种或多种矿物聚合而成的固体集合体，比如花岗岩由石英、长石和云母组成。
A mineral is a natural inorganic solid with a definite chemical composition and crystal structure, such as quartz or feldspar. A rock is an aggregate of one or more minerals, for example granite is made of quartz, feldspar, and mica.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
舒良树 主编,《普通地质学》第3版(曾获全国首届优秀教材一等奖)
Shu Liangshu ed., General Geology, 3rd ed. (winner of the 1st National Excellent Textbook Award)
独立核验依据 · Independent verification: 核验依据 2 ISBN 9787116123892（豆瓣书目条目: 普通地质学）
#矿物 #岩石 #晶体
碳-14测年为什么能测出古物的年代？它最多能测多远？
How can carbon-14 dating determine the age of ancient objects, and how far back does it reach?
生物活着时不断从大气吸收碳-14，死后吸收停止，体内碳-14就按5730年的半衰期慢慢衰变成氮-14。测出剩余碳-14的比例，就能算出生物的死亡时间。因为碳-14含量每五千多年就减半，一般只能可靠测定约5万年以内的有机样品，更老的样品要改用钾-氩或铀-铅等其他方法。
While alive, organisms continually take up carbon-14 from the atmosphere; at death uptake stops and the isotope decays to nitrogen-14 with a half-life of 5,730 years. Measuring the remaining fraction tells when the organism died. Because the amount halves every few thousand years, the method is reliable only for organic samples younger than about 50,000 years; older materials require other techniques such as potassium-argon or uranium-lead dating.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
Tarbuck & Lutgens,《Earth Science》第14版,Pearson,2015
E. J. Tarbuck and F. K. Lutgens, Earth Science, 14th ed., Pearson, 2015
#碳-14 #测年 #半衰期
大陆漂移学说是由谁提出的？
Who proposed the theory of continental drift?
大陆漂移学说由德国气象学家阿尔弗雷德·魏格纳于1912年提出，他认为所有大陆曾经连成一块名为泛大陆的超大陆。虽然当时证据不足，这一思想后来发展为板块构造学说。
The theory of continental drift was proposed by German meteorologist Alfred Wegener in 1912, who argued that all continents were once joined in a supercontinent called Pangaea. Though poorly supported at the time, the idea later developed into plate tectonics.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-11-03
来源 · Source
魏格纳《海陆的起源》(1915)
Wegener's 'The Origin of Continents and Oceans' (1915)
独立核验依据 · Independent verification: 核验依据 1 OPENLIBRARY 标识 /works/OL39022499W：The origin of continen
#大陆漂移 #魏格纳 #泛大陆
为什么说"下面的地层更老"？地质学家靠什么规律判断岩层先后？
Why is a lower rock layer considered older, and what rules let geologists order rock layers?
丹麦解剖学家斯丹诺提出地层层序律：在未受扰动的地层序列中，下面的岩层总是比上面的先沉积、更老。他还补充了原始水平原理——沉积层最初是水平的，如今倾斜或褶皱说明后来发生了构造变动。地层层序律配合化石演替规律，就建立了相对地质年代的基本框架。
Danish anatomist Nicolas Steno proposed the law of superposition: in an undisturbed sequence, a lower layer was deposited before and is older than the one above it. He also added the principle of original horizontality—sediments settle in horizontal beds, so tilted or folded strata record later deformation. Superposition, combined with the succession of fossils, gives geologists the basic framework of relative geologic age.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
舒良树 主编,《普通地质学》第3版(曾获全国首届优秀教材一等奖)
Shu Liangshu ed., General Geology, 3rd ed. (winner of the 1st National Excellent Textbook Award)
独立核验依据 · Independent verification: 核验依据 2 ISBN 9787116123892（豆瓣书目条目: 普通地质学）
#地层层序律 #叠加原理 #相对年代
关于月球起源，目前主流的大碰撞假说是什么？
What is the leading giant-impact hypothesis for the origin of the Moon?
约45亿年前，一颗火星大小的天体（被称为“忒伊亚”）以斜角撞击年轻的原始地球，撞击溅射出的物质在绕地轨道上聚集成月球。这一假说能解释月球缺铁、地球与月球的氧同位素组成一致以及月球轨道倾斜等特征，是目前被广泛接受的理论。
About 4.5 billion years ago, a Mars-sized body (called Theia) struck the young proto-Earth at an oblique angle; debris ejected by the impact aggregated in orbit to form the Moon. The hypothesis explains the Moon's iron depletion, the identical oxygen-isotope composition of Earth and the Moon, and the Moon's inclined orbit, and is the widely accepted theory.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
舒良树 主编,《普通地质学》第3版(曾获全国首届优秀教材一等奖)
Shu Liangshu ed., General Geology, 3rd ed. (winner of the 1st National Excellent Textbook Award)
独立核验依据 · Independent verification: 核验依据 2 ISBN 9787116123892（豆瓣书目条目: 普通地质学）
#月球 #大碰撞假说 #忒伊亚
为什么钻石能划破玻璃而滑石不能？摩氏硬度表是怎么定的？
Why can diamond scratch glass but talc cannot? How is the Mohs hardness scale defined?
摩氏硬度表把矿物按相互刻划的能力分成1到10级：滑石是1，金刚石是10。硬度高的矿物能在硬度低的矿物表面留下划痕，反之则不能，差别来自矿物晶体内部化学键的强弱。野外鉴别时常用指甲（约2.5）、铜币（约3.5）和小刀（约5.5）快速测定未知矿物的硬度范围。
The Mohs scale ranks minerals by their ability to scratch one another, from talc at 1 to diamond at 10. A harder mineral scratches a softer one but not the reverse, and the difference reflects the strength of bonds inside each crystal. In the field, common tools such as a fingernail (about 2.5), a copper coin (about 3.5), and a knife blade (about 5.5) quickly bracket an unknown mineral's hardness.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
Tarbuck & Lutgens,《Earth Science》第14版,Pearson,2015
E. J. Tarbuck and F. K. Lutgens, Earth Science, 14th ed., Pearson, 2015
#摩氏硬度 #矿物 #金刚石
为什么三叶虫和菊石被称为“标准化石”？
Why are trilobites and ammonites called index fossils?
因为它们生存时限短、地理分布广、数量丰富且特征明显，能精确指示地层时代。三叶虫可限定寒武纪至二叠纪，菊石可限定泥盆纪至白垩纪末期，地质学家据此划分并对比地层。
Because they have short stratigraphic ranges, wide geographic distribution, abundance, and distinctive morphology, making them precise age indicators. Trilobites constrain the Cambrian through the Permian, and ammonites the Devonian through the end of the Cretaceous, so geologists use them to subdivide and correlate strata.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-10-03 · 2 条独立证据
来源 · Source
《普通地质学》(舒良树)
General Geology (Shu Liangshu)
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787116064911（按标识回读: 普通地质学）
#标准化石 #三叶虫 #菊石
为什么花岗岩中常见石英与钾长石共生，而玄武岩中常见橄榄石与辉石共生？
Why do quartz and potassium feldspar commonly coexist in granite, while olivine and pyroxene commonly coexist in basalt?
这符合鲍温反应序列：岩浆冷却时，镁铁质矿物按橄榄石→辉石→角闪石→黑云母的不连续序列结晶，长石则由钙长石向钠长石连续演化。玄武岩保存了早期高温结晶的镁铁质组合，花岗岩保存了晚期低温结晶的长英质组合。
This follows Bowen's reaction series: as magma cools, mafic minerals crystallize in a discontinuous sequence (olivine→pyroxene→amphibole→biotite) while feldspars evolve continuously from anorthite toward albite. Basalt preserves the early high-temperature mafic assemblage; granite preserves the late low-temperature felsic assemblage.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-10-03 · 2 条独立证据
来源 · Source
《普通地质学》(舒良树)
General Geology (Shu Liangshu)
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787116064911（按标识回读: 普通地质学）
#岩浆结晶 #鲍温反应序列 #矿物共生
为什么相隔千里的两条地层剖面，可以凭借化石把同一时代的地层对应起来？
How can strata of the same age be correlated between two sections thousands of kilometers apart using fossils?
这是化石层序律（生物层序律）：生物演化不可逆且在全球同步推进，相同的化石组合代表相同地质年代。19世纪初威廉·史密斯据此编制了英格兰地层柱，证明了用标准化石进行全球性对比的可行性。
This is the principle of faunal succession: because evolution is irreversible and globally synchronous, identical fossil assemblages mark identical geologic ages. In the early 19th century William Smith used it to build the first stratigraphic column of England, demonstrating global correlation by index fossils.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
Tarbuck & Lutgens,《Earth Science》第14版,Pearson,2015
E. J. Tarbuck and F. K. Lutgens, Earth Science, 14th ed., Pearson, 2015
#化石层序律 #地层对比 #威廉·史密斯
石灰岩地区为什么溶洞、天坑、峰林特别多？
Why are caves, sinkholes, and stone forests so common in limestone regions?
石灰岩主要成分是碳酸钙，雨水溶解空气中的二氧化碳后形成弱酸性水，沿裂隙不断溶蚀碳酸钙，把岩石掏成溶洞、地下河和竖井。溶洞塌陷扩大就成了天坑，残余的岩柱被水流雕刻成峰林石林。这类地貌统称喀斯特，我国广西、贵州、云南是世界著名的喀斯特集中区。
Limestone is mainly calcium carbonate, and rainwater that has absorbed CO2 from the air becomes weakly acidic, slowly dissolving the rock along cracks into caves, underground rivers, and shafts. Collapsing cavern roofs produce sinkholes, while leftover rock pillars are sculpted into stone forests. Such landscapes, called karst, are spectacularly developed in Guangxi, Guizhou, and Yunnan, among the most famous karst regions on Earth.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
舒良树 主编,《普通地质学》第3版(曾获全国首届优秀教材一等奖)
Shu Liangshu ed., General Geology, 3rd ed. (winner of the 1st National Excellent Textbook Award)
独立核验依据 · Independent verification: 核验依据 2 ISBN 9787116123892（豆瓣书目条目: 普通地质学）
#喀斯特 #溶洞 #碳酸钙
森林土壤剖面从上到下大致分为哪些层？各层有什么特征？
From top to bottom, roughly what horizons make up a forest soil profile, and what characterizes each?
常见分层为：O层（枯枝落叶层）、A层（富含腐殖质、颜色深的淋溶层）、E层（浅色淋溶层，矿物被淋失）、B层（淀积层，黏粒和铁铝氧化物沉积）和C层（风化母质层）。下渗水把可溶物从上部带走并在下部淀积，形成淋溶—淀积的对应关系。
Typical horizons are: O (litter layer), A (dark, humus-rich eluvial zone), E (light eluvial zone where minerals have been leached), B (illuvial zone where clay and iron/aluminum oxides accumulate), and C (weathered parent material). Percolating water removes soluble material from above and deposits it below, creating the eluvial–illuvial pairing.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-10-03 · 2 条独立证据
来源 · Source
《普通地质学》(舒良树)
General Geology (Shu Liangshu)
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787116064911（按标识回读: 普通地质学）
#土壤剖面 #淋溶 #淀积
什么是冰碛？
What is a moraine?
冰川搬运的碎石泥土在融化时堆积下来，形成垄状的冰碛，记录着冰川曾到的位置。
Glaciers drop carried debris as ridges called moraines, marking where ice once reached.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
舒良树 主编,《普通地质学》第3版(曾获全国首届优秀教材一等奖)
Shu Liangshu ed., General Geology, 3rd ed. (winner of the 1st National Excellent Textbook Award)
独立核验依据 · Independent verification: 核验依据 2 ISBN 9787116123892（豆瓣书目条目: 普通地质学）
#地质 #冰碛
什么是岩石循环？火成岩、沉积岩和变质岩如何相互转化？
What is the rock cycle and how do igneous, sedimentary, and metamorphic rocks relate to one another?
岩石循环描述三类岩石在地球内外力作用下不断转化的过程：岩浆冷却成火成岩，风化堆积成沉积岩，高温高压下又可变成变质岩，再熔融回到岩浆。板块运动与地表侵蚀是推动这一循环的主要动力。
The rock cycle describes how the three rock types transform under Earth's internal and surface processes: magma cools into igneous rock, weathering and burial form sedimentary rock, and heat and pressure create metamorphic rock, which can melt back to magma. Plate tectonics and erosion are the main engines of this cycle.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-11-03
来源 · Source
Plummer 等《物理地质学》第16版（McGraw-Hill）
Plummer, C.C., Carlson, D.H. & Hammersley, L., Physical Geology (16th ed., McGraw-Hill)
独立核验依据 · Independent verification: 核验依据 1 OPENLIBRARY 标识 /works/OL2752791W：Physical geology（首版 197
#岩石循环 #火成岩 #沉积岩 #变质岩
玄武岩和花岗岩都是火成岩，为什么它们的矿物组成和颜色差别很大？
Basalt and granite are both igneous rocks, so why do their mineral compositions and colors differ so greatly?
玄武岩由基性岩浆（如地幔部分熔融的产物）快速冷却形成，富镁铁矿物，因此颜色深；花岗岩由酸性岩浆缓慢冷却形成，富含石英和长石，因此颜色浅。岩浆的化学成分与冷却速度共同决定了矿物组合。
Basalt forms from mafic magma (e.g. partial melting of the mantle) that cools quickly and is rich in iron- and magnesium-bearing minerals, giving a dark color; granite forms from felsic magma that cools slowly and is rich in quartz and feldspar, giving a light color. Both magma chemistry and cooling rate control the mineral assemblage.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
舒良树 主编,《普通地质学》第3版(曾获全国首届优秀教材一等奖)
Shu Liangshu ed., General Geology, 3rd ed. (winner of the 1st National Excellent Textbook Award)
独立核验依据 · Independent verification: 核验依据 2 ISBN 9787116123892（豆瓣书目条目: 普通地质学）
#火成岩 #玄武岩 #花岗岩
沙漠里的沙子主要来自哪里？
Where does desert sand mainly come from?
多来自周围岩石风化剥蚀及干涸湖盆、古河流沉积物，经风长期搬运分选堆积而成。
Mostly from weathered rock and deposits of dried lakes or ancient rivers, transported and sorted by wind over long time.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
舒良树 主编,《普通地质学》第3版(曾获全国首届优秀教材一等奖)
Shu Liangshu ed., General Geology, 3rd ed. (winner of the 1st National Excellent Textbook Award)
独立核验依据 · Independent verification: 核验依据 2 ISBN 9787116123892（豆瓣书目条目: 普通地质学）
#地质 #沙漠
地球磁场为什么会发生极性倒转？它在地质记录中如何被识别？
Why does Earth's magnetic field undergo polarity reversals, and how are they recognized in the geologic record?
磁场由液态外核中导电流体的运动（发电机效应）产生，流动模式并不稳定，偶极场会衰减重建，使南北磁极偶尔互换。火山岩冷却时会把当时的磁场方向记录在磁性矿物中，沉积物逐层沉积也记录磁场方向，地质学家据此建立磁性地层年表并用于地层对比与定年。
The field is generated by the motion of electrically conducting fluid in the liquid outer core (the geodynamo); the flow pattern is unstable, so the dipole field decays and rebuilds, occasionally swapping magnetic poles. Cooling lavas lock in the field direction in magnetic minerals, and sediments record it layer by layer, letting geologists build the geomagnetic polarity time scale for correlation and dating.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-10-03 · 2 条独立证据
来源 · Source
《普通地质学》(舒良树)
General Geology (Shu Liangshu)
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787116064911（按标识回读: 普通地质学）
#地磁倒转 #发电机 #磁性地层
地质年代的基本时间单位有哪些？
What are the basic units of geologic time?
地质年代从大到小依次为宙、代、纪、世、期。例如显生宙包括古生代、中生代和新生代，每个代又细分为若干纪，用于描述地球和生命的演化顺序。
Geologic time units from largest to smallest are eon, era, period, epoch, and age. For example, the Phanerozoic Eon includes the Paleozoic, Mesozoic, and Cenozoic eras, each subdivided into periods that describe Earth and life history.
难度 进阶 · 适合 小学高段(9-12)
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
Tarbuck & Lutgens,《Earth Science》第14版,Pearson,2015
E. J. Tarbuck and F. K. Lutgens, Earth Science, 14th ed., Pearson, 2015
#地质年代 #纪 #代
什么是变质岩？
What are metamorphic rocks?
已有岩石在高温高压或化学流体作用下矿物成分和结构改变，形成变质岩，如大理石由石灰岩变来。
Existing rocks changed in mineral composition and texture under high temperature, pressure, or fluids become metamorphic rocks, e.g. marble comes from limestone.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
舒良树 主编,《普通地质学》第3版(曾获全国首届优秀教材一等奖)
Shu Liangshu ed., General Geology, 3rd ed. (winner of the 1st National Excellent Textbook Award)
独立核验依据 · Independent verification: 核验依据 2 ISBN 9787116123892（豆瓣书目条目: 普通地质学）
#地质 #变质岩
在没有构造变动的沉积岩层序中，哪一层最老？这一规律的名称是什么？
In an undisturbed succession of sedimentary strata, which layer is the oldest, and what is this principle called?
最底部的岩层最老。这被称为叠加定律（地层层序律），由尼古拉斯·斯特诺在17世纪提出：在未被翻转的沉积序列中，先沉积的岩层位于后沉积岩层之下。
The bottommost layer is the oldest. This is the law of superposition, proposed by Nicolas Steno in the 17th century: in an undeformed sequence, strata deposited first lie beneath those deposited later.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-10-03 · 2 条独立证据
来源 · Source
《普通地质学》(舒良树)
General Geology (Shu Liangshu)
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787116064911（按标识回读: 普通地质学）
#地层学 #叠加定律 #相对地质年代
地质学家如何用标准化石来给岩层定年？
How do geologists use index fossils to date rock layers?
标准化石是生存时间短、分布广、特征明确的生物化石，可作为特定地质年代的标记。在两地层中发现同一种标准化石，便推断它们形成于同一时期，再结合放射性定年校准绝对年龄。
Index fossils are remains of organisms that lived briefly, ranged widely, and are easy to identify, serving as markers for specific geologic ages. Finding the same index fossil in two layers suggests they formed in the same period, and radiometric dating then pins down absolute ages.
难度 进阶 · 适合 小学高段(9-12)
CC BY 4.0 · 已核验 · Verified 2026-11-03
来源 · Source
Plummer 等《物理地质学》第16版（McGraw-Hill）
Plummer, C.C., Carlson, D.H. & Hammersley, L., Physical Geology (16th ed., McGraw-Hill)
独立核验依据 · Independent verification: 核验依据 1 OPENLIBRARY 标识 /works/OL2752791W：Physical geology（首版 197
#标准化石 #生物地层 #相对定年
橄榄石、辉石、角闪石和云母都属于硅酸盐矿物，它们的核心结构单元是什么？
Olivine, pyroxene, amphibole, and mica are all silicate minerals. What is their fundamental structural unit?
它们都以硅氧四面体（SiO₄）为基本结构单元。四面体之间共享氧原子的方式不同——孤立四面体、单链、双链、片状或三维骨架——决定了矿物的物理性质，如解理方向和硬度。
They all share the silica tetrahedron (SiO₄) as their basic building block. How these tetrahedra share oxygen atoms—as isolated units, single or double chains, sheets, or a three-dimensional framework—governs physical properties such as cleavage direction and hardness.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-10-03 · 2 条独立证据
来源 · Source
《普通地质学》(舒良树)
General Geology (Shu Liangshu)
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787116064911（按标识回读: 普通地质学）
#硅酸盐矿物 #矿物结构 #硅氧四面体
大陆地壳和海洋地壳有什么不同？
How do continental and oceanic crust differ?
海洋地壳薄而重、主要是玄武岩；大陆地壳厚而轻、成分更接近花岗岩，所以大陆能高高露出海面。
Oceanic crust is thin and dense basalt; continental crust is thicker and lighter granite, so it rides high.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
舒良树 主编,《普通地质学》第3版(曾获全国首届优秀教材一等奖)
Shu Liangshu ed., General Geology, 3rd ed. (winner of the 1st National Excellent Textbook Award)
独立核验依据 · Independent verification: 核验依据 2 ISBN 9787116123892（豆瓣书目条目: 普通地质学）
#地质 #地壳
大理岩的主要成分是什么？它通常由哪种岩石变质而来？
What is marble's main component, and from which rock is it typically derived?
大理岩主要由方解石（CaCO₃）组成，通常由石灰岩经接触变质或区域变质作用形成。方解石重结晶使大理岩比石灰岩更致密、颗粒更粗，且遇稀盐酸会剧烈起泡。
Marble consists mainly of calcite (CaCO₃) and typically derives from limestone through contact or regional metamorphism. Recrystallization makes marble denser and coarser-grained than limestone, and it effervesces vigorously with dilute hydrochloric acid.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
舒良树 主编,《普通地质学》第3版(曾获全国首届优秀教材一等奖)
Shu Liangshu ed., General Geology, 3rd ed. (winner of the 1st National Excellent Textbook Award)
独立核验依据 · Independent verification: 核验依据 2 ISBN 9787116123892（豆瓣书目条目: 普通地质学）
#变质岩 #大理岩 #方解石
岩石圈和软流圈有什么不同？
How do the lithosphere and asthenosphere differ?
岩石圈是坚硬的岩石外壳，包括地壳和上地幔顶部；其下的软流圈较软、能缓慢流动，板块就浮在它上面。
The rigid lithosphere (crust + upper mantle top) sits on the softer, slowly flowing asthenosphere.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
舒良树 主编,《普通地质学》第3版(曾获全国首届优秀教材一等奖)
Shu Liangshu ed., General Geology, 3rd ed. (winner of the 1st National Excellent Textbook Award)
独立核验依据 · Independent verification: 核验依据 2 ISBN 9787116123892（豆瓣书目条目: 普通地质学）
#地质 #岩石圈
什么是雅丹地貌？
What is a yardang landform?
干旱区的大风挟着沙粒长期打磨地表，遇到软硬不均的古代河湖沉积，软的先被刮走，硬的留下，一排排土丘与沟槽便顺着主风向平行排列，这就是雅丹。它是刻出来的而不是堆出来的：沙丘是风把沙堆高，雅丹是风把地面挖低。另一种易混是丹霞，同样干旱、同样被侵蚀塑形，但以红色陆相地层和流水作用为主；雅丹的垄槽走向还能反过来帮你判断古风向。
In arid country, wind loaded with sand abrades the surface over long stretches of time. Where the bed is unevenly hard—old lake or river deposits—softer parts are scoured away first and tougher remnants stand, so ridges and troughs end up in parallel rows aligned with the prevailing wind: that is a yardang. Note that it is carved rather than built—a dune is sand piled up by wind, a yardang is ground dug down by wind. The other confusion is Danxia landform, equally arid and equally shaped by erosion but dominated by red continental beds and running water. Because yardang rows track the wind, they can also be read backwards to infer paleo-wind direction.
难度 进阶 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
舒良树 主编,《普通地质学》第3版(曾获全国首届优秀教材一等奖)
Shu Liangshu ed., General Geology, 3rd ed. (winner of the 1st National Excellent Textbook Award)
独立核验依据 · Independent verification: 核验依据 2 ISBN 9787116123892（豆瓣书目条目: 普通地质学）
#地质 #雅丹
地层剖面中出现弯曲起伏、遭受剥蚀的界线面，其上下岩层产状不一致，这一现象说明什么？
In a stratigraphic section, an undulating eroded boundary separates strata whose attitudes differ above and below. What does this feature indicate?
这是角度不整合：下伏岩层先沉积、褶皱抬升，经长期侵蚀夷平，之后海侵或沉降使新沉积物覆盖其上。它记录了该地区曾发生的构造运动、抬升剥蚀与再次沉降，代表一段缺失的地质时间。
This is an angular unconformity: the underlying strata were deposited, folded and uplifted, then beveled by long-term erosion before renewed subsidence or transgression buried them. It records a cycle of tectonism, uplift and erosion, and renewed deposition, representing a gap in geologic time.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-10-03 · 2 条独立证据
来源 · Source
《普通地质学》(舒良树)
General Geology (Shu Liangshu)
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787116064911（按标识回读: 普通地质学）
#不整合面 #地质记录 #沉积间断
广东丹霞山这类红岩奇峰是怎么形成的？
How did the red rocky peaks of Danxia Mountain in Guangdong form?
丹霞地貌的岩层是约一亿年前沉积的红色陆相砂砾岩，红色来自当时气候干燥、铁质被氧化成氧化铁。地壳抬升后，流水沿垂直节理切割，加上长期风化剥蚀，把原本平坦的红色盆地刻成赤壁丹崖、群峰如林的景观。断块抬升与差异侵蚀共同塑造了这类奇特的地貌。
Danxia landforms are carved from red terrestrial sandstones and conglomerates deposited about 100 million years ago in an arid climate, where iron oxidized and rusted the beds red. After crustal uplift, streams cut along vertical joints while weathering ate back the rock, turning a flat red basin into sheer red cliffs and clustered towers. Block uplift combined with differential erosion sculpted these striking landscapes.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 来源待核验 · Source pending review
来源 · Source
出处备注：此条未指向带版次的可引用著作（通识性内容、机构文件或未展开的英文书名），本库不提供独立书目出处；如需精确引用，需由编辑补全具体篇目与版次。
中国地质调查局（丹霞地貌研究）
China Geological Survey (Danxia landform research)
#丹霞地貌 #红色砂岩 #差异侵蚀
一个玄武质岩浆房如何能分异出接近花岗岩成分的岩浆？
How can a basaltic magma chamber differentiate to yield magma approaching granitic composition?
主要通过结晶分异：早期结晶的橄榄石和辉石比重大，沉入岩浆房底部，使残余岩浆中的SiO₂、Al₂O₃和碱质相对富集；地壳物质的同化混染也能推动岩浆向酸性演化。反复的分离结晶使残余岩浆逐渐接近花岗岩成分。
Mainly through fractional crystallization: early-crystallized olivine and pyroxene are dense and sink to the chamber floor, enriching the remaining melt in SiO₂, Al₂O₃, and alkalis; assimilation of crustal material also drives the melt toward felsic composition. Repeated separation of crystals gradually produces near-granitic magma.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-10-03 · 2 条独立证据
来源 · Source
《普通地质学》(舒良树)
General Geology (Shu Liangshu)
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787116064911（按标识回读: 普通地质学）
#岩浆分异 #结晶分异 #花岗岩
火星过去的地表环境与今天有什么不同？主要证据有哪些？
How did Mars' past surface environment differ from today, and what are the main lines of evidence?
早期火星拥有更厚的CO₂大气，有液态水形成的河流、湖泊，甚至可能存在巨大海洋；如今它寒冷干燥、大气稀薄。证据包括干涸的河谷与三角洲、盖尔撞击坑的古湖泊沉积、含水矿物（黏土、硫酸盐），以及好奇号和毅力号发现的过去宜居环境的化学证据。
Early Mars had a thicker CO₂ atmosphere, rivers and lakes of liquid water, and possibly a vast ocean; today it is cold, dry, and thin-atmosphered. Evidence includes dry river valleys and deltas, ancient lake deposits in Gale crater, water-bearing minerals (clays, sulfates), and chemical signs of past habitability found by Curiosity and Perseverance.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
舒良树 主编,《普通地质学》第3版(曾获全国首届优秀教材一等奖)
Shu Liangshu ed., General Geology, 3rd ed. (winner of the 1st National Excellent Textbook Award)
独立核验依据 · Independent verification: 核验依据 2 ISBN 9787116123892（豆瓣书目条目: 普通地质学）
#火星 #古湖泊 #行星地质
沉积岩是如何形成的？
How do sedimentary rocks form?
风化剥蚀的碎屑、生物遗骸或化学沉淀物在水底一层层堆积，经压实和胶结后固结成岩。
Weathered fragments, remains of organisms, or chemical precipitates accumulate in layers at the bottom of water and harden through compaction and cementation.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
舒良树 主编,《普通地质学》第3版(曾获全国首届优秀教材一等奖)
Shu Liangshu ed., General Geology, 3rd ed. (winner of the 1st National Excellent Textbook Award)
独立核验依据 · Independent verification: 核验依据 2 ISBN 9787116123892（豆瓣书目条目: 普通地质学）
#地质 #沉积岩
板岩与页岩外观相似，但板岩能劈成薄片而页岩不能，为什么？
Slate looks similar to shale, yet slate splits into thin sheets while shale does not. Why?
板岩是页岩在较低温压条件下经区域变质作用形成的。变质过程中片状矿物（如绿泥石、云母）定向排列，形成垂直于主应力的板理，使岩石能沿板理劈开。
Slate forms from shale by regional metamorphism at relatively low temperature and pressure. During metamorphism, platy minerals such as chlorite and mica align perpendicular to the principal stress, producing a slaty cleavage along which the rock splits.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-10-03 · 2 条独立证据
来源 · Source
《普通地质学》(舒良树)
General Geology (Shu Liangshu)
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787116064911（按标识回读: 普通地质学）
#变质岩 #板岩 #板理
三大类岩石是怎么互相转化的？
How do the three major rock types transform into one another?
岩浆冷却成火成岩；火成岩或变质岩经风化、搬运、沉积，被压实胶结成沉积岩；任何岩石被埋入高温高压环境都会重结晶成变质岩；变质岩或沉积岩在深部熔化又能变回岩浆。这条循环线路靠板块运动提供能量，但并不是单向流水线——每类岩石都可以在多个环节跳转，循环时间从千年到数亿年不等。
Magma cools into igneous rock; igneous or metamorphic rock is weathered, transported, and buried to become sedimentary rock through compaction and cementation; any rock reheated and squeezed deep underground recrystallizes into metamorphic rock; and rocks can melt back into magma. Plate tectonics supplies the energy for the loop, but it is no one-way assembly line—each rock type can jump between several stages, and a full cycle takes anywhere from thousands to hundreds of millions of years.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
Tarbuck & Lutgens,《Earth Science》第14版,Pearson,2015
E. J. Tarbuck and F. K. Lutgens, Earth Science, 14th ed., Pearson, 2015
#岩石循环 #火成岩 #变质岩
山坡为什么会突然发生滑坡？
Why do hillsides suddenly give way in landslides?
滑坡是土石沿斜坡快速下滑，触发条件常是雨水渗入增加孔隙水压、地震震动或人类开挖坡脚。陡坡、松散土石和缺少植被的坡面更脆弱，连续强降雨是最常见的诱因。滑坡速度可以快得惊人，能埋没道路、村镇并阻断河流，山区雨后应特别警惕。
A landslide is rock and soil rapidly sliding down a slope; common triggers are rainwater seeping in and raising pore pressure, earthquake shaking, or humans undercutting the toe of the slope. Steep slopes, loose debris, and sparse vegetation are more vulnerable, and prolonged heavy rain is the most frequent cause. Slides can be astonishingly fast, burying roads and villages and damming rivers, so hillsides warrant caution after storms.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
舒良树 主编,《普通地质学》第3版(曾获全国首届优秀教材一等奖)
Shu Liangshu ed., General Geology, 3rd ed. (winner of the 1st National Excellent Textbook Award)
独立核验依据 · Independent verification: 核验依据 2 ISBN 9787116123892（豆瓣书目条目: 普通地质学）
#滑坡 #边坡失稳 #降雨
云母能剥成极薄的片，方解石能碎成菱形块，而石英破碎时呈贝壳状断口，这说明矿物的什么性质？
Mica peels into extremely thin sheets, calcite breaks into rhombohedral blocks, but quartz breaks with conchoidal fracture. What mineral property does this illustrate?
这体现了矿物内部晶体结构对破裂方式的控制。解理是矿物沿原子结合力最弱的方向裂开的性质，具有方向性；断口是矿物受外力后产生的不规则破裂面，没有方向性。
It illustrates how internal crystal structure controls breakage. Cleavage is the tendency to split along planes of weakest atomic bonding and is directional; fracture is the irregular breakage surface produced by external force and has no preferred direction.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
Tarbuck & Lutgens,《Earth Science》第14版,Pearson,2015
E. J. Tarbuck and F. K. Lutgens, Earth Science, 14th ed., Pearson, 2015
#矿物性质 #解理 #断口
二叠纪末发生了地质历史中规模最大的生物灭绝，约百分之多少的物种消失？主流解释是什么？
The end-Permian extinction is the largest in Earth's history. Roughly what percentage of species disappeared, and what is the leading explanation?
约96%的海洋物种和约70%的陆地脊椎动物物种消失。主流解释是西伯利亚暗色岩大火成岩省的喷发，释放巨量CO₂和SO₂，引发温室增温、海洋缺氧与海洋酸化，最终导致生态系统崩溃。
Roughly 96% of marine species and about 70% of terrestrial vertebrate species went extinct. The leading explanation is the eruption of the Siberian Traps large igneous province, which released vast CO₂ and SO₂, causing greenhouse warming, ocean anoxia, and acidification that collapsed ecosystems.
难度 进阶 · 适合 大众
CC BY 4.0 · 来源待核验 · Source pending review
来源 · Source
出处备注：此条未指向带版次的可引用著作（通识性内容、机构文件或未展开的英文书名），本库不提供独立书目出处；如需精确引用，需由编辑补全具体篇目与版次。
Science（二叠纪末大灭绝研究）
Science (end-Permian extinction research)
#生物大灭绝 #二叠纪末 #西伯利亚暗色岩
为什么液态石油主要生成并保存在大约60–120 °C的“生油窗”内？
Why is liquid oil generated and preserved mainly inside the roughly 60–120 °C oil window?
烃源岩中的干酪根靠温度驱动的热裂解生成油气，反应速率按阿伦尼乌斯定律随温度指数增长：低于约60 °C时，地质时间尺度内降解太慢，几乎不生油；高于约150 °C时，已生成的液态烃会进一步裂解为湿气与干气并残留碳质残渣。只有中间这段温压条件既能大量产出液态烃又不致将其破坏，故称生油窗，对应的埋深大致为一两千米到四五千米。
Oil forms as kerogen in source rocks cracks under heat, with reaction rates rising exponentially as temperature climbs. Below roughly 60 °C the kerogen degrades too slowly over geologic time to yield much oil; above about 150 °C liquid hydrocarbons already formed crack onward into wet and dry gas, leaving carbonaceous residue. Only this intermediate temperature range both produces abundant liquids and preserves them—the oil window, reached at depths of roughly one to five kilometers.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-11-03
来源 · Source
B.P. Tissot、D.H. Welte，《石油的形成与赋存》（第2版），Springer-Verlag，1984年
B.P. Tissot & D.H. Welte, Petroleum Formation and Occurrence, 2nd ed., Springer-Verlag, 1984
独立核验依据 · Independent verification: 核验依据 1 OPENLIBRARY 标识 /works/OL20670715W：Petroleum Formation an
#干酪根 #生油窗 #热成熟作用
地下石油并不是现成的“油湖”，它要经历哪些关键环节才能最终聚集成可供开采的油气藏？
Crude oil underground is not some ready-made subterranean lake—through which key stages does it finally gather into a producible oil and gas reservoir?
富含有机质的细粒沉积物深埋后，其中干酪根在约60–120℃的生油窗内热裂解生成石油与天然气；压实作用和烃类自身的浮力将其排出烃源岩，沿多孔渗透的储层或输导层向上倾方向运移，遇连续致密封盖层受阻后，在背斜、断层遮挡或地层尖灭等圈闭中聚集成藏。烃源岩、储层、盖层、圈闭与适时的运移配置，共同构成完整的含油气系统。
Once organic-rich fine sediments are buried deeply enough, their kerogen cracks thermally into oil and gas inside the roughly 60–120 °C oil window. Compaction and the buoyancy of the hydrocarbons themselves expel them from the source rock, and they migrate updip along porous, permeable carrier beds until a continuous tight seal stops them, letting them pool in anticlinal, fault-blocked, or stratigraphic pinch-out traps. Source rock, reservoir, seal, trap, and well-timed migration together constitute a complete petroleum system.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-11-04
来源 · Source
Magoon 与 Dow 主编,《The Petroleum System—From Source to Trap》,AAPG Memoir 60（AAPG）,1994 (DOI: 10.1306/m60585)
Magoon & Dow (eds.), 'The Petroleum System—From Source to Trap', AAPG Memoir 60 (AAPG), 1994, DOI: 10.1306/m60585
独立核验依据 · Independent verification: 核验依据 1 Crossref DOI 10.1306/m60585
#干酪根 #生油窗 #油气运移 #圈闭
什么是地壳均衡与冰后回弹？
What are isostasy and post-glacial rebound?
地壳像浮在软流圈上的木块，冰盖压沉、冰退后慢慢弹起，北欧和加拿大仍在以每年厘米级回升。
Crust floats on the mantle like wood; ice weighed it down and it is still rebounding centimeters per year in Scandinavia and Canada.
难度 进阶 · 适合 大众
CC BY 4.0 · 来源待核验 · Source pending review
来源 · Source
出处备注：作者 / 书名 / 版次 / 出版社 / 年份齐备，仅缺独立比对证据；已在可信度报告单列披露，不再重复核验。
Stein & Wysession,《地震学、板块与构造学导论》第2版,剑桥大学出版社,2013
C. Stein and M. Wysession, An Introduction to Seismology, Plates, and Tectonics, 2nd ed., Cambridge University Press, 2013
#均衡 #回弹
盐丘为什么会鼓出地面？
Why do salt domes bulge above the ground?
地下深厚的盐层比上覆岩石轻，受挤压会像软泥一样向上穿刺，拱起地表形成盐丘，常伴生油气。
Thick buried salt is lighter than the rock above, so it pierces upward under pressure, arching the surface into a salt dome often with oil and gas.
难度 入门 · 适合 小学高段(9-12)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
舒良树 主编,《普通地质学》第3版(曾获全国首届优秀教材一等奖)
Shu Liangshu ed., General Geology, 3rd ed. (winner of the 1st National Excellent Textbook Award)
独立核验依据 · Independent verification: 核验依据 2 ISBN 9787116123892（豆瓣书目条目: 普通地质学）
#盐丘 #底辟
地球大约有多少年的历史？
How old is the Earth approximately?
科学家通过放射性定年法测得地球的年龄约为46亿年。这是通过对最古老的陨石和地球岩石进行同位素测年得到的结论。
Using radiometric dating, scientists estimate the Earth is about 4.6 billion years old. This figure comes from dating the oldest meteorites and Earth rocks by their radioactive isotopes.
难度 入门 · 适合 大众
CC BY 4.0 · 来源待核验 · Source pending review
来源 · Source
出处备注：此条未指向带版次的可引用著作（通识性内容、机构文件或未展开的英文书名），本库不提供独立书目出处；如需精确引用，需由编辑补全具体篇目与版次。
放射性同位素测年（如铀-铅法）
Radiometric dating (e.g., uranium-lead method)
#地球年龄 #定年 #同位素
岩石主要分为哪三大类？
What are the three main types of rock?
岩石主要分为火成岩、沉积岩和变质岩三大类。火成岩由岩浆冷却形成，沉积岩由碎屑或化学沉淀堆积而成，变质岩则是原有岩石在高温高压下改变而成。
Rocks are mainly divided into three groups: igneous, sedimentary, and metamorphic. Igneous rocks form from cooled magma, sedimentary rocks from accumulated debris or chemical precipitates, and metamorphic rocks from existing rocks altered by heat and pressure.
难度 入门 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
舒良树 主编,《普通地质学》第3版(曾获全国首届优秀教材一等奖)
Shu Liangshu ed., General Geology, 3rd ed. (winner of the 1st National Excellent Textbook Award)
独立核验依据 · Independent verification: 核验依据 2 ISBN 9787116123892（豆瓣书目条目: 普通地质学）
#岩石 #火成岩 #沉积岩 #变质岩
什么是黄土？
What is loess?
黄土是风力搬运堆积的细粒粉砂，常见于干旱区下风向，如中国黄土高原，土质疏松易侵蚀。
Loess is fine wind-blown silt deposited downwind of dry regions, such as China's Loess Plateau; it is loose and easily eroded.
难度 入门 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
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舒良树 主编,《普通地质学》第3版(曾获全国首届优秀教材一等奖)
Shu Liangshu ed., General Geology, 3rd ed. (winner of the 1st National Excellent Textbook Award)
独立核验依据 · Independent verification: 核验依据 2 ISBN 9787116123892（豆瓣书目条目: 普通地质学）
#地质 #黄土
高山上为什么能找到海洋生物化石？
Why can ocean-fossil shells be found on high mountains?
这些岩层曾是古代海底，后来板块挤压把海底抬升成高山，海洋生物的化石也就被带到了山顶。
Those rocks were once ancient seabeds; plate collisions later lifted the seafloor into mountains, carrying marine fossils to the peaks.
难度 入门 · 适合 小学高段(9-12)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
舒良树 主编,《普通地质学》第3版(曾获全国首届优秀教材一等奖)
Shu Liangshu ed., General Geology, 3rd ed. (winner of the 1st National Excellent Textbook Award)
独立核验依据 · Independent verification: 核验依据 2 ISBN 9787116123892（豆瓣书目条目: 普通地质学）
#化石 #造山
玄武岩的石柱为什么常常是六边形的？
Why are basalt columns often hexagonal?
熔岩慢慢冷却收缩时，会沿能量最省的裂缝均匀裂开，自然形成近似六边形的柱状节理，像 Giants Causeway。
As lava cools and contracts, it cracks along the most efficient pattern, forming near-hexagonal columns like those at Giants Causeway.
难度 入门 · 适合 小学低段(6-8)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
舒良树 主编,《普通地质学》第3版(曾获全国首届优秀教材一等奖)
Shu Liangshu ed., General Geology, 3rd ed. (winner of the 1st National Excellent Textbook Award)
独立核验依据 · Independent verification: 核验依据 2 ISBN 9787116123892（豆瓣书目条目: 普通地质学）
#玄武岩 #柱状节理
风化与侵蚀有什么不同？
What is the difference between weathering and erosion?
风化是岩石在原地被温度、水、植物等破坏分解；侵蚀是风、水流等把这些碎屑搬运到别处。
Weathering breaks rock in place by temperature, water and plants; erosion carries the debris away by wind or water.
难度 入门 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
舒良树 主编,《普通地质学》第3版(曾获全国首届优秀教材一等奖)
Shu Liangshu ed., General Geology, 3rd ed. (winner of the 1st National Excellent Textbook Award)
独立核验依据 · Independent verification: 核验依据 2 ISBN 9787116123892（豆瓣书目条目: 普通地质学）
#地质 #风化
什么是岩石圈？
What is the lithosphere?
岩石圈是地球最外层由岩石组成的坚硬外壳，包括地壳和上地幔顶部。板块就在岩石圈之上漂移。
The lithosphere is Earth's rigid outer shell made of rock, including the crust and the top of the mantle. Tectonic plates move on top of it.
难度 入门 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
舒良树 主编,《普通地质学》第3版(曾获全国首届优秀教材一等奖)
Shu Liangshu ed., General Geology, 3rd ed. (winner of the 1st National Excellent Textbook Award)
独立核验依据 · Independent verification: 核验依据 2 ISBN 9787116123892（豆瓣书目条目: 普通地质学）
#地质 #岩石圈
恐龙大约在什么时候灭绝的？
When did the dinosaurs go extinct?
约6600万年前白垩纪末，一次小行星撞击和火山等活动导致大规模灭绝，非鸟恐龙消失。
Around 66 million years ago at the end of the Cretaceous, an asteroid impact and volcanism caused a mass extinction that killed non-avian dinosaurs.
难度 入门 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
舒良树 主编,《普通地质学》第3版(曾获全国首届优秀教材一等奖)
Shu Liangshu ed., General Geology, 3rd ed. (winner of the 1st National Excellent Textbook Award)
独立核验依据 · Independent verification: 核验依据 2 ISBN 9787116123892（豆瓣书目条目: 普通地质学）
#地质 #恐龙灭绝
地球的内部由哪几层组成？
What layers make up the inside of the Earth?
地球从外到内主要分为地壳、地幔和地核三层。地壳是薄薄的最外层，地幔占地球体积的大部分，而地核又可分为液态外核和固态内核。
From the outside in, the Earth is mainly divided into three layers: the crust, the mantle, and the core. The crust is a thin outermost shell, the mantle makes up most of the Earth's volume, and the core is split into a liquid outer core and a solid inner core.
难度 入门 · 适合 大众
CC BY 4.0 · 来源待核验 · Source pending review
来源 · Source
出处备注：此条未指向带版次的可引用著作（通识性内容、机构文件或未展开的英文书名），本库不提供独立书目出处；如需精确引用，需由编辑补全具体篇目与版次。
地球物理标准分层模型（地震波研究）
Standard geophysical Earth model from seismic studies
#地球内部 #地壳 #地核
为什么土壤会有不同的颜色？
Why do soils have different colors?
土壤颜色取决于矿物成分和含水量，比如富铁的红土、含腐殖质的黑土、缺氧的蓝灰土。
Soil color depends on minerals and moisture, e.g. iron-rich red soil, organic black soil, and oxygen-poor bluish-grey soil.
难度 入门 · 适合 小学低段(6-8)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
舒良树 主编,《普通地质学》第3版(曾获全国首届优秀教材一等奖)
Shu Liangshu ed., General Geology, 3rd ed. (winner of the 1st National Excellent Textbook Award)
独立核验依据 · Independent verification: 核验依据 2 ISBN 9787116123892（豆瓣书目条目: 普通地质学）
#地质 #土壤
石头为什么会慢慢碎裂？
Why do rocks slowly crumble?
白天热晚上冷、水结冰膨胀、植物根钻缝和酸雨都会让岩石裂开变成碎屑。
Daily heating and cooling, freezing water, plant roots and acid rain crack rock into fragments.
难度 入门 · 适合 小学低段(6-8)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
舒良树 主编,《普通地质学》第3版(曾获全国首届优秀教材一等奖)
Shu Liangshu ed., General Geology, 3rd ed. (winner of the 1st National Excellent Textbook Award)
独立核验依据 · Independent verification: 核验依据 2 ISBN 9787116123892（豆瓣书目条目: 普通地质学）
#地质 #岩石风化
化石是如何形成的？
How do fossils form?
当动植物死亡后被泥沙迅速掩埋，其硬体部分在地下经过漫长岁月被矿物替换，便形成化石。化石记录了远古生命的形态，是了解地球生命历史的重要证据。
When plants or animals die and are quickly buried by sediment, their hard parts can be slowly replaced by minerals underground over long periods, forming fossils. Fossils record the shapes of ancient life and are key evidence for understanding the history of life on Earth.
难度 入门 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
舒良树 主编,《普通地质学》第3版(曾获全国首届优秀教材一等奖)
Shu Liangshu ed., General Geology, 3rd ed. (winner of the 1st National Excellent Textbook Award)
独立核验依据 · Independent verification: 核验依据 2 ISBN 9787116123892（豆瓣书目条目: 普通地质学）
#化石 #沉积 #古生物
为什么有的沙滩是黑色的？
Why are some beaches black?
黑色沙多来自火山附近的玄武岩，经风化破碎后含铁镁矿物呈黑色，如夏威夷黑沙滩。
Black sand often comes from basalt near volcanoes; weathered iron-magnesium minerals make it black, as on Hawaiian black-sand beaches.
难度 入门 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
舒良树 主编,《普通地质学》第3版(曾获全国首届优秀教材一等奖)
Shu Liangshu ed., General Geology, 3rd ed. (winner of the 1st National Excellent Textbook Award)
独立核验依据 · Independent verification: 核验依据 2 ISBN 9787116123892（豆瓣书目条目: 普通地质学）
#地质 #黑沙滩
沙子是什么？
What is sand?
沙子是岩石被风和流水磨碎成的细小颗粒，主要成分是坚硬的石英。
Sand is rock ground into tiny grains, mostly hard quartz.
难度 入门 · 适合 小学低段(6-8)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
舒良树 主编,《普通地质学》第3版(曾获全国首届优秀教材一等奖)
Shu Liangshu ed., General Geology, 3rd ed. (winner of the 1st National Excellent Textbook Award)
独立核验依据 · Independent verification: 核验依据 2 ISBN 9787116123892（豆瓣书目条目: 普通地质学）
#地质 #沙子
什么是化石？它是怎么形成的？
What is a fossil and how does it form?
化石是远古动植物留下的遗体或痕迹，常见于沉积岩中。当生物被泥沙迅速掩埋、隔绝空气后，矿物质慢慢替换其硬体，便保存为石头般的印记。
A fossil is the preserved remains or trace of an ancient organism, usually found in sedimentary rock. When a creature is quickly buried by mud or sand and sealed off from air, minerals slowly replace its hard parts, turning it into a stone-like record.
难度 入门 · 适合 小学低段(6-8)
CC BY 4.0 · 已核验 · Verified 2026-11-03
来源 · Source
Plummer 等《物理地质学》第16版（McGraw-Hill）
Plummer, C.C., Carlson, D.H. & Hammersley, L., Physical Geology (16th ed., McGraw-Hill)
独立核验依据 · Independent verification: 核验依据 1 OPENLIBRARY 标识 /works/OL2752791W：Physical geology（首版 197
#化石 #沉积岩 #矿化