ESR dating of glacial tills and glaciations in the Urumqi River headwaters, Tianshan Mountains, China

Jing-bo, Zhao; Zhou, Shangzhe; He, Yuanqing; Ye, Yuguang; Liu, Shiyin

doi:10.1016/j.quaint.2005.05.013

Cited by 67 publications

(61 citation statements)

References 14 publications

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“…The procedures of the samples' preparation and measurements could be referred to refs. [11,12]. Ge centers in quartz grains were chosen as dating signals and measured with an ECS106ESR spectrometer manufactured by Bruker (Germany) in the Open Laboratory of Marine Sedimentology, Qingdao.…”

Section: Methods and Resultsmentioning

confidence: 99%

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Glacial advances and ESR chronology of the Pochengzi Glaciation, Tianshan Mountains, China

Jing-bo

Liu

Wang

et al. 2009

Sci. China Earth Sci.

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The Pochengzi Glaciation is a typical glaciation in Quaternary in the Tianshan Mountains. The glacial landforms comprise several integrated end moraines, like a fan spreading from the north to the south at the mouth of the Muzhaerte River valley and on the piedmont on the southeastern slope of the Tumur Peak, the largest center of modern glaciation in the Tianshan Mountains. The landforms recorded a complex history of the ancient glacier change and contained considerable information of the glacial landscape evolution, and dating these landforms helps us understand the temporal and spatial shifts of the past cryosphere in this valley and reconstruct the paleoenvironment in this region. Electron spin resonance (ESR) dating of the glacial tills in the upper stratum from a well-exposed section, end moraines, and associated outwashes was carried out using Ge centers in quartz grains, which are sensitive to the sunlight and grinding. The results could be divided into three clusters, 13. 6-25.3, 39.5-40.4 and 64.2-71.7 ka. Based on the principle of geomorphology and stratigraphy and the available paleoenvironmental data from northwestern China, the end moraines were determined to deposit in the Last Glaciation. The landforms and the three clusters of ages demonstrate that at least three large glacial advances occurred during the Pochengzi Glaciation, which are corresponding to marine oxygen isotope stage 4 (MIS4), MIS3b and MIS2. The landforms also indicate that the glaciers were compound valley glacier in MIS2 and MIS3b and piedmont glacier in MIS4, and the ancient Muzhaerte glacier were 94, 95 and 99 km at their maximum extensions in these three glacial advances.

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Section: Methods and Resultsmentioning

confidence: 99%

“…Therefore, it can potentially date ages of the glacial sediments and augment conventional maping and relative dating in Quaternary glaciation research. In the past several years, many researchers have applied this technique in determining the timing of Quaternary glaciations with considerable successes [7][8][9][10][11][12][13].…”

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confidence: 99%

Glacial advances and ESR chronology of the Pochengzi Glaciation, Tianshan Mountains, China

Jing-bo

Liu

Wang

et al. 2009

Sci. China Earth Sci.

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“…To the west of the Helan Mountain, three glaciations assigned as the Zhonglianggan Glaciation [31], Penultimate Glaciation and Last Glaciation occurred in Lenglongling of the Qilian Mountain (4843 m) and around Bogeda peak (5545 m) in the Tianshan Mountains during the Quaternary epoch. Yi and Zhou [32][33][34][35] first reported the older glaciation in the headwater area of the Urumqi River in the Tianshan Mountains and the Bailang River valley in the Qilian Mountain respectively, and its age is 520-405 ka. Recently, Zhao found the evidence of this glacial advance in Tuomuer peak and Ateaoyinake River drainage area of the southern slopes of western Tianshan Mountains (425.3 and 453.0 ka).…”

Section: Glacial Sequence Accords With the Quaternary Glacial Patternmentioning

confidence: 99%

Quaternary glacier development and the relationship between the climate change and tectonic uplift in the Helan Mountain

Zhang

Mingyue

et al. 2012

Chin. Sci. Bull.

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“…In the Pliocene, red molasse gave way to grey molasse deposits as a result of climatic cooling, while the uplifts reached an altitude of 4-5 km. Further Quaternary uplift of the Pamirs and the Tien Shan produced the current typical glacial landscape [Chedia, 1986;Mikolaichuk, 2000;Abramowski et al, 2006;Zhao et al, 2006;Koppes et al, 2008].…”

Section: Problem Solutionmentioning

confidence: 99%

Seismic Hazard in Tien Shan: Basement Structure Control Over the Deformation Induced by Indo-Eurasia Collision

Buslov¹,

Mikhail²,

Grave³

et al. 2011

Tectonics

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ESR dating of glacial tills and glaciations in the Urumqi River headwaters, Tianshan Mountains, China

Cited by 67 publications

References 14 publications

Glacial advances and ESR chronology of the Pochengzi Glaciation, Tianshan Mountains, China

Glacial advances and ESR chronology of the Pochengzi Glaciation, Tianshan Mountains, China

Quaternary glacier development and the relationship between the climate change and tectonic uplift in the Helan Mountain

Seismic Hazard in Tien Shan: Basement Structure Control Over the Deformation Induced by Indo-Eurasia Collision

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