Geomorphic evolution of the Yangtze Gorges and the time of their formation

Li, Jijun; Xie, Shuyun; Ming-sheng, Kuang

doi:10.1016/s0169-555x(01)00110-6

Cited by 142 publications

(80 citation statements)

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“…Angular unconformity was also observed in the Upper-Sanmen and Lower-Sanmen formations in Pinglu of the Sannen Gorge [79]. Moreover, the "three gorges" were broken through and filled eastward during this period [80]. A few deep lake basins were also developed by uplift around the Plateau due to tensional forces, such as the Zoige Basin, which was formed around 0.9 Ma.…”

Section: 6 a Time Scalesmentioning

confidence: 90%

Spatiotemporal variations of Chinese lakes and their driving mechanisms since the Last Glacial Maximum: A review and synthesis of lacustrine sediment archives

Shen

2012

Chin. Sci. Bull.

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In this article, the author provides the first synthesis and classification of available environment-indicating proxies for lacustrine sediment. A review of spatio-temporal variations in lakes from the Tibetan Plateau, the dry areas of Northwestern China, the Yunnan-Guizhou Plateau and the plains of Eastern China since the LGM is then provided. The driving mechanism for variations in lake processes and characteristics is also discussed based on various temporal scales. The author then proposes that future investigations be conducted to: (1) strengthen the study of theoretics and interpretation of environment-indicating proxies, (2) enhance the study of high-resolution time series and spatial variability of lake environment evolution, (3) provide more attention on the influence of human activities on lake environments, and (4) boost construction of the Quaternary lake database of China. Lakes are normally formed under various geological and geographical backgrounds. As a component of the terrestrial hydrosphere, lakes have close relationships with the atmosphere, biosphere and lithosphere, and serve as the connection between these systems. Once a lake is formed, it is influenced by a series of tectonic, climatic and anthropogenic factors. As a result, lacustrine evolutional processes usually involve geological, physical, chemical and biological processes and the interactions between them, and these processes are all documented by lacustrine sediment archives. Because lakes are widely distributed worldwide and normally undergo a long history of evolution, lacustrine sediment generally possesses a continuous record with highresolutions that provides abundant information regarding regional environmental and climatic variations that can be used in global change studies. Lacustrine sediment also contains information pertaining to human activities, since people tend to settle around lakes owing to the resources they provide. Synthesis and classification of proxies in lacustrine sediment describing environmental conditionsLakes generally have an independent watershed that serves as a source of water, sediment, biomass and chemicals, while the lake serves as a sink for all of these materials. Accordingly, lacustrine sediment can record all information regarding the source-sink interactions and mass balances including water balances (watershed rainfall and lake level stands), sediment balances (watershed erosion intensity and lake sedimentation rate), biological balances (watershed vegetation and lake biomass) and chemical balances (watershed soluble materials and lake water ion concentrations) [1].

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Section: 6 a Time Scalesmentioning

confidence: 90%

Spatiotemporal variations of Chinese lakes and their driving mechanisms since the Last Glacial Maximum: A review and synthesis of lacustrine sediment archives

Shen

2012

Chin. Sci. Bull.

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“…The Three Gorges have been formed by river incision of limestone mountains of Lower Palaeozoic-Mesozoic age in response to tectonic uplift during the Quaternary (Li et al 2001). The terrain is a succession of limestone gorges and inter-gorge valleys, where less resistant rocks (mainly interbedded sandstones, shales and mudstones) predominate.…”

Section: Description Of the Study Areamentioning

confidence: 99%

Regional assessment of landslide impact in the Three Gorges area, China, using ASTER data: Wushan-Zigui

2007

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This paper is focussed on the hazard impact of landslides in the Three Gorges, and represents the progression of our ongoing study on regional land instability assessment in the Three Gorges area using imagery data from the Advanced Spaceborne Thermal Emission Radiometer (ASTER). The key development here is the establishment of a model that integrates land instability with several factors that can relate hazard to human life, such as slope failures occurring in proximity to built-up areas and roads, and areas of high landslide risk along the bank of Yangtze and its major tributaries. The method correctly identifies some of the known destructive landslides in the region, like Qianjiangping and Huangtupo, as belonging to areas of potentially high landslide impact. Our results suggest that several population centres, including the towns of Wushan and Badong, are rated at high landslide hazard levels. This study highlights the importance of differentiating between landslide types within susceptibility assessment, and identifies those locations in the Three Gorges where the probability of landslide occurrence with negative impact to life and property is greatest.

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“…The evidence of Nd isotope and the detrital zircon grains from the Hanoi Basin, Central Myanmar and lower Yangtze suggest that the establishment of the modern drainage systems in East Tibet prior to 23 Ma (Clift et al, 2006;Zheng et al, 2013;Robinson et al, 2014), even though some workers consider that the Yangtze River is younger than 5 Ma (Li et al, 2001;Yang and Youn, 2007;Jia et al, 2010). However, the evolutionary features of river systems in southeast China, such as the Minjiang River ( Fig.…”

Section: Introductionmentioning

confidence: 99%

Topographic architecture and drainage reorganization in Southeast China: Zircon U-Pb chronology and Hf isotope evidence from Taiwan

et al. 2016

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Geomorphic evolution of the Yangtze Gorges and the time of their formation

Cited by 142 publications

References 1 publication

Spatiotemporal variations of Chinese lakes and their driving mechanisms since the Last Glacial Maximum: A review and synthesis of lacustrine sediment archives

Spatiotemporal variations of Chinese lakes and their driving mechanisms since the Last Glacial Maximum: A review and synthesis of lacustrine sediment archives

Regional assessment of landslide impact in the Three Gorges area, China, using ASTER data: Wushan-Zigui

Topographic architecture and drainage reorganization in Southeast China: Zircon U-Pb chronology and Hf isotope evidence from Taiwan

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