A5059585164- Geology and Paleoclimatology Research
- Geological formations and processes
- Geological and Geophysical Studies
- Hydrocarbon exploration and reservoir analysis
- Landslides and related hazards
- earthquake and tectonic studies
- Geological and Geochemical Analysis
Nanjing University
2021-2025
Abstract Mountain‐building events often initiate fluvial erosion waves that usually propagate upstream. Previous studies have delved into the wave, manifested as knickpoint migration, presuming a spatially consistent uplift of plateaus. However, expansion plateaus can result in variable rock rates across different regions, complicating our understanding dynamics. In this study, conducted at edge northeastern Tibetan Plateau, we investigated impact plateau on wave processes within upper...
<p>The reorganization of the drainage system is a crucial process on Earth's surface. However, there insufficient understanding and driving mechanism mountainous system. Here we demonstrate an example tectonic subsidence-induced reorganizations between two largest tributaries (Jialing Han) Yangtze River. The upstream Han River, flowing in parallel from north to south, undergo abrupt eastward deflection approximately 90° within intermontane basin. Through river profile analysis,...
Abstract The Namche Barwa Syntaxis (NBS) is one of the most productive detrital factories on Earth. Previous studies have shown that NBS supplies large amounts sediment to Brahmaputra River, although sources and controlling factors production not been ascertained in detail. This study presents petrographic heavy‐mineral data for 43 sand samples collected Yarlung Parlung river catchments covering entire surrounding areas. Combined with U–Pb ages zircons, our indicate 89 ± 11% River sediments...
The Wufo Basin at the margin of northeastern Tibet Plateau connects upstream reaches Yellow River with lowland catchment downstream, and fluvial terrace sequence in this basin provides crucial clues to understand evolution history drainage system relation uplift outgrowth Tibetan Plateau. Using field survey analysis Digital Elevation Model/Google Earth imagery, we found least eight terraces area. overlying loess highest was dated 1.2 Ma based on paleomagnetic stratigraphy (two normal two...
在构造活跃地区, 前人研究着重考虑了构造活动对河流地貌演化的影响, 而岩性和局部侵蚀基准面的作用较少被关注. 本文以青藏高原东北部海原断裂的影响地区为例, 通过对水系形态及地貌特征指数(陡峭指数、河谷宽高比、<italic>χ</italic>等)的计算等, 分析了裂点发育和水系重组等不同空间尺度下的河流地貌演化过程. 结果显示, 以老虎山和哈思山为中心, 分别发育了两个放射状水系. 其中老虎山东南侧支流流向发生了近180°的转变, 我们认为这是受局部侵蚀基准面高度的差异(~190m)所诱发的水系重组. 部分发源于哈思山的支流发育了受岩性控制下的峡谷-宽谷相间分布的河谷地貌. 此外, 构造活动和黄河下切引起的局部侵蚀基准面的下降触发了由平行状水系向树枝状水系的正反馈演化过程. 这些结果表明, 即使在构造活跃地区, 岩性和侵蚀基准面变化在地貌演化过程中也扮演着重要角色.