ESR dating studies of palaeo-debris-flow deposits in Dongchuan, Yunnan Province, China

Ye, Yuguang; He, Jie; Juncheng, Gao; Xiangyi, Lei

doi:10.1016/s0277-3791(97)00104-2

Cited by 21 publications

(14 citation statements)

References 4 publications

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“…A typical ESR spectrum of the quartz samples and a dose-response curve are shown in Figure 2. Ye et al (1998) used Ge centre to date the palaeo-debris-flow deposits, and obtained the ESR ages of older sediments (more than 50 ka) from E' centre of quartz in marine conditions by using a higher microwave power (2 mW). This study is based on the same idea.…”

Section: Methodsmentioning

confidence: 99%

Dating of erosion surface and terraces in the eastern Qilian Shan, northwest China

Pan

Gao

et al. 2006

Earth Surf Processes Landf

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The actively deformed foreland of eastern Qilian Shan (mountains) contains well-preserved geomorphic features such as erosion surfaces, river terraces and tectonically uplifted alluvial fans, providing suitable archives for research on regional tectonic activities and palaeoclimatic changes. These geomorphic surfaces are well dated by using a combination of magnetostratigraphy, electron spin resonance, thermoluminescence, infra-red stimulated luminescence, radiocarbon dating, and correlation with the well-established loess-palaeosol sequences of China. Our results show that the erosion surface formed about 1·4 Ma ago, and the age of river terraces is 1·24 Ma

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Section: Methodsmentioning

confidence: 99%

Dating of erosion surface and terraces in the eastern Qilian Shan, northwest China

Pan

Gao

et al. 2006

Earth Surf Processes Landf

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“…Mass movement (rock fall, landslide, debris flow) deposits are common around the river valley. Some early research has been carried out on the relationships between debrisflow deposits and Quaternary climate change in the southeastern fringe of the Tibetan Plateau (Cui et al, 1996;Ye et al, 1998;Li et al, 2002). The scarcity of quantitative estimates of the ages of these deposits in the past research made it difficult to determine if they are temporally related to climate change or other environmental incidents.…”

Section: Introductionmentioning

confidence: 99%

Holocene debris-flow deposits and their implications on the climate in the upper Jinsha River valley, China

2008

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“…The Ge centers in glacial quartz grains, which are 0.125-0.250 mm in diameter, were chosen as dating signals. Previous studies have shown that Ge centers are sensitive to sunlight and grinding, and these two mechanisms are capable of removing them effectively [29][30][31][32]. First, according to the theory of the structure and the movement of mountain glaciers [33], it is possible for the debris that the glacier carries to be exposed.…”

Section: Methodsmentioning

confidence: 99%

Quaternary glacial geomorphology and glaciations of Kongur Mountain, eastern Pamir, China

Wang

Zhou

Jing-bo

et al. 2011

Sci. China Earth Sci.

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Kongur Mountain is the largest center of modern glaciation on the Pamir Plateau. During the glacial-interglacial cycles of the Quaternary, Kongur Mountain was extensively and repeatedly glaciated, and the glacial landforms from multiple glaciations are well-preserved in valleys, in basins, and on the piedmonts. Dating samples have been collected according to the distribution and weathering of the glacial tills, the relationship among the glacial deposits, and the loess or soil developed on the moraines. Electron spin resonance (ESR) dating of the samples was done using the germanium (Ge) centers in the glacial quartz grains, which are sensitive to both sunlight and grinding. The ages of the glacial deposits can be divided into four clusters, i.e., 13.1±0.8-27.0±2.2, 36.4±3.3-48.7±5.7, 65.6±6.8-86.6±8.9, and 105.6±9.4-178.3±17.8 ka. Six glacial advances in this region have been confirmed, which are equivalent in age to the Little Ice Age (LIA), Neoglaciation, marine oxygen isotope stages (MIS) 2, mid-MIS3, MIS4, and MIS6. The largest local last glacial maximum (LGM L ) occurred during MIS4 rather than the global Last Glacial Maximum (LGM G ) of MIS2, and a glacial advance that occurred during mid-MIS3 was also larger than the LGM G . Furthermore, deeply weathered tills below 3500 m a.s.l. on the western slope of Kongur Mountain, when compared with the ages of the oldest glaciation of the Muztag Ata region, likely occurred prior to the penultimate glacial cycle. The glacial landforms prior to the penultimate glacial cycle on the northern slope are not well-preserved due to erosion after deposition. Several glacial deposits are only speculated to be distributed at higher elevations on the southwest side of the Gaizi Checkpoint. The extensive hummocky moraines on the western slope were formed by multiple glacial advances, and the latest glacial advance corresponded to mid-MIS3.

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ESR dating studies of palaeo-debris-flow deposits in Dongchuan, Yunnan Province, China

Cited by 21 publications

References 4 publications

Dating of erosion surface and terraces in the eastern Qilian Shan, northwest China

Dating of erosion surface and terraces in the eastern Qilian Shan, northwest China

Holocene debris-flow deposits and their implications on the climate in the upper Jinsha River valley, China

Quaternary glacial geomorphology and glaciations of Kongur Mountain, eastern Pamir, China

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