河流阶地记录了哪些关于构造与气候的历史信息？
What tectonic and climatic history do river terraces record?
河流下切形成高出河面的阶梯状阶地，其拔河高度与年代序列反映区域地壳抬升速率，而阶地沉积与风化层则记录古气候波动。通过定年多级阶地可反演百万年尺度的构造—气候耦合。
Incision produces stepped terraces above the river; their height above the channel and age sequence reveal regional uplift rates, while terrace sediments and weathering record paleoclimate swings. Dating multiple terrace levels inverts million-year-scale tectonics-climate coupling.
难度 专业 · 适合 高中(15-18)
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
#河流阶地 #构造抬升 #下切
河流三角洲的沉积结构如何反映海平面与物源变化？
How does a river delta's sedimentary architecture reflect sea-level and sediment-supply changes?
三角洲由河流带入的泥沙在河口分汊堆积，其层序中进积与退积旋回记录了海平面升降与物源供给的此消彼长，并保存有分流河道、潮汐与风暴沉积。高频层序对比可重建全新世海岸线迁移。
Deltas build where river-borne sediment splits and deposits at the mouth; their sequences of progradation and retrogradation record the interplay of sea-level change and sediment supply, preserving distributary, tidal, and storm deposits. High-resolution correlation reconstructs Holocene shoreline migration.
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：著录仅给书名，无版次与年份；同一书名常对应多个版次，不臆测具体版本。
《自然-地球科学》(Nature Geoscience) 三角洲沉积动力学
Nature Geoscience (Delta sedimentary dynamics)
#三角洲 #沉积旋回 #海平面
喀斯特地貌（如峰林、溶洞）是怎样形成的？
How do karst landforms such as towers and caves form?
在降水丰富、碳酸盐岩广布的地区，含CO2的水溶蚀岩石形成溶沟、溶洞与地下河，地表塌陷则成天坑与峰林。中国南方喀斯特是世界典型的湿润区岩溶地貌。
In rainy regions underlain by carbonate rock, CO2-rich water dissolves the stone to create furrows, caves, and underground rivers, while surface collapse forms sinkholes and tower karst. South China karst is a classic example of humid-zone karst.
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
#喀斯特 #峰林 #溶洞
沙漠中的沙丘形态主要受哪些因素控制？
What factors mainly control dune shapes in deserts?
沙丘形态取决于风向稳定性、风速、沙源供给与植被覆盖：单向风形成新月形沙丘，多向风易成星状沙丘，植被固定则发育抛物线沙丘。沙丘还会随风力缓慢迁移。
Dune form depends on wind-direction consistency, wind speed, sand supply, and vegetation: unidirectional winds build crescent barchans, variable winds yield star dunes, and vegetated settings produce parabolic dunes. Dunes also migrate slowly with the wind.
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
#风成地貌 #沙丘 #新月形
冰川如何塑造出U型谷这类地貌？
How do glaciers shape landforms such as U-shaped valleys?
山谷冰川像巨型锉刀，凭借底部裹挟的岩屑对谷壁和谷底进行磨蚀与刨蚀，把原本的V型河流谷拓宽加深为平直的U型谷，并留下冰斗、刃脊等遗迹。这是第四纪冰期最直观的地貌证据。
Valley glaciers act like giant files, abrading walls and floors with debris they carry, widening and deepening former V-shaped river valleys into straight U-shapes and leaving cirques and aretes. These are the most visible landforms of Quaternary glaciation.
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
#冰川地貌 #U型谷 #冰斗
中国黄土高原的厚层黄土是如何远距离搬运堆积的？
How did the thick loess of China's Loess Plateau accumulate from afar?
冰期干冷多风时，西北干旱区的细粉砂被强劲西风与冬季风搬运至黄土高原堆积，间冰期风化成壤，形成数十至数百米厚的黄土-古土壤序列。它是东亚季风与沙漠演化的天然档案。
During cold, dry, windy glacials, fine silt from arid northwestern sources was carried by strong westerlies and winter monsoons to the Loess Plateau and deposited; interglacials weathered it into soils, building tens to hundreds of meters of loess-paleosol sequences. It is a natural archive of the East Asian monsoon and desert evolution.
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
#黄土 #风成堆积 #季风
丹霞地貌的红色陡崖景观与什么岩石和过程有关？
What rocks and processes produce the red cliff landscapes of Danxia landforms?
丹霞由陆相红色砂砾岩经抬升后，在垂直节理控制下被流水与风化沿裂隙下切、崩塌而成赤壁丹崖。其色彩来自岩石中氧化铁，集中分布于中国东南丘陵。
Danxia forms from continental red sandstone and conglomerate uplifted and then incised and collapsed along fractures by water and weathering, producing red cliffs. The color comes from iron oxide in the rock, concentrated in the hills of southeast China.
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
#丹霞 #红色砂砾岩 #节理