Field studies of Late Cenozoic Minjiang River incision rate and its constraint on morphology of the eastern margin of the Tibeta plateau

2004 ◽  
pp. 2091-2097
Author(s):  
Yong Li ◽  
Shuyou Cao ◽  
Rongjun Zhou ◽  
A Densmore ◽  
M Ellis
Keyword(s):  
Field Studies ◽  
Late Cenozoic ◽  
Eastern Margin ◽  
River Incision ◽  
Minjiang River

scholarly journals ESR geochronology of the Minjiang River terraces at Wenchuan, eastern margin of Tibetan Plateau, China

2013 ◽  
Vol 40 (4) ◽  
pp. 360-367 ◽  
Author(s):  
Chun-Ru Liu ◽  
Gong-Ming Yin ◽  
Hui-Ping Zhang ◽  
Wen-Jun Zheng ◽  
Pierre Voinchet ◽  
...  
Keyword(s):  
Tibetan Plateau ◽  
Tectonic Activity ◽  
The Tibetan Plateau ◽  
Fluvial Sediments ◽  
River Terrace ◽  
Eastern Margin ◽  
River Terraces ◽  
Quaternary Climate ◽  
Minjiang River ◽  
Longmen Shan Fault

Abstract The Minjiang River terrace along the Longmen Shan fault zone near Wenchuan, at the eastern margin of the Tibetan Plateau, China, provides archives for tectonic activity and quaternary climate change. However, previous studies were not able to provide ages older than 100 ka due to the limitations of dating material or/and methods applied to date the fluvial sediments. In this study, we used the ESR signal of the Ti-Li center in quartz to obtain the ages of four higher terraces (T3–T6). According to the results, the terraces T3 to T6 were formed at 64±19 ka, 101±15 ka, 153±33 ka, and 423±115 ka, respectively. Combined with previous studies, these results indicate that the formations of all terraces correspond to glacial/interglacial transition periods, such as, T1-T5 being correlated to MIS2/1, MIS4/3, MIS5d/5c, and MIS6/5e respectively, while T6 probably to MIS12/11. According to these data, it is found that the average incision rate was significantly higher over the last 150 ka than that previous 100 ka (250 to 150 ka). As both tectonics and climate have affected the formation of these terraces, in addition to the overall uplifting of Tibetan Plateau, the regional uplift due to isostasy would be an additional tectonic factor in the formation of river terraces in the eastern margin of Tibetan plateau.

Mid- to Late Cenozoic canyon development on the eastern margin of the Rockall Trough, offshore Ireland

2006 ◽  
Vol 229 (3-4) ◽  
pp. 113-132 ◽  
Author(s):  
Gavin M. Elliott ◽  
Patrick M. Shannon ◽  
Peter D.W. Haughton ◽  
Daniel Praeg ◽  
Brian O'Reilly
Keyword(s):  
Late Cenozoic ◽  
Eastern Margin ◽  
Rockall Trough

The influence of large landslides on river incision in a transient landscape: Eastern margin of the Tibetan Plateau (Sichuan, China)

2007 ◽  
Vol 119 (11-12) ◽  
pp. 1462-1476 ◽  
Author(s):  
W. B. Ouimet ◽  
K. X. Whipple ◽  
L. H. Royden ◽  
Z. Sun ◽  
Z. Chen
Keyword(s):  
Tibetan Plateau ◽  
The Tibetan Plateau ◽  
Eastern Margin ◽  
River Incision

scholarly journals Late Cenozoic evolution of the eastern margin of the Tibetan Plateau: Inferences from40Ar/39Ar and (U-Th)/He thermochronology

Tectonics ◽  
2002 ◽  
Vol 21 (1) ◽  
pp. 1-1-1-20 ◽  
Author(s):  
Eric Kirby ◽  
Peter W. Reiners ◽  
Michael A. Krol ◽  
Kelin X. Whipple ◽  
Kip V. Hodges ◽  
...  
Keyword(s):  
Tibetan Plateau ◽  
The Tibetan Plateau ◽  
Late Cenozoic ◽  
Eastern Margin

scholarly journals Basic Characteristics and Evolution of Geological Structures in the Eastern Margin of the Qinghai-Tibet Plateau

2019 ◽  
Vol 23 (4) ◽  
pp. 283-291
Author(s):  
Dejie Deng ◽  
Changliu Wang ◽  
Peihao Peng
Keyword(s):  
Three Dimensional ◽  
Dynamic Environment ◽  
Geological Structure ◽  
Tibet Plateau ◽  
Tectonic Activity ◽  
Late Cenozoic ◽  
Eastern Margin ◽  
Lateral Dislocation ◽  
Basic Characteristics ◽  
Qinghai Tibet Plateau

Based on field geological survey and stratigraphic profile survey in the eastern margin of the Qinghai-Tibet Plateau, the basic characteristics and evolution of geological structure in the eastern margin of the Qinghai-Tibet Plateau are studied. The Dongyuan area of the Qinghai-Tibet Plateau is divided into the late Cenozoic period and the current period. During the Late Cenozoic, the Pliocene Xigeda lacustrine deposits develops from 4.2 MaBP to 2.6 MaBP, with 9 cold-warm climate change stages. There are 4.3 MaBP old glacial period in this area, and 5 extreme paleoclimate events in Quaternary. At present, the horizontal movement intensity and mode of different tectonic zones are determined by the northward extrusion, eastward extrusion and rotation around the eastern tectonic junction in the study area, and the stages of the movement state changing with time are related to the gestation and occurrence of extra-large earthquakes. At present, the three-dimensional crustal movement shows that the tectonic activity differentiation of mountain and basin, which is related to tectonic dynamic environment and deep material activity, is related to the compression, shortening and uplift of plateau mountain and the extension and subsidence of basin, reflecting the inheritance of neotectonic activity. Through practical analysis, it is found that the eastern margin of the Qinghai-Tibet Plateau is composed of Minshan fault block and Longmenshan structural belt. The left-lateral dislocation of Minjiang fault is roughly the same as the vertical dislocation. In Longmenshan tectonic belt, the right-lateral dislocation of Maowen-Wenchuan fault, Beichuan-Yingxiu fault and other main faults is the same as the vertical dislocation.

scholarly journals Impact of rock uplift on rates of late Cenozoic Rocky Mountain river incision

2007 ◽  
Vol 112 (F3) ◽  
Author(s):  
Catherine A. Riihimaki ◽  
Robert S. Anderson ◽  
Elizabeth B. Safran
Keyword(s):  
Rocky Mountain ◽  
Mountain River ◽  
Late Cenozoic ◽  
River Incision
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