DOI: 10.1016/j.jseaes.2019.104130
论文题名: Early Pleistocene uplift of the northeastern Tibetan Plateau: Evidence from the Dunhuang Basin, NW China
作者: Liu Y. ; Ren S. ; Liu Y. ; Genser J. ; Neubauer F.
刊名: Journal of Asian Earth Sciences
ISSN: 13679120
出版年: 2020
卷: 188 语种: 英语
英文关键词: Cenozoic climate
; Dunhuang Basin
; Early Pleistocene
; northeastern Tibetan Plateau
; Sedimentary records
; Tectonic uplift
Scopus关键词: argon-argon dating
; Cenozoic
; detrital deposit
; magnetic property
; paleoclimate
; Pleistocene
; sedimentary structure
; uplift
; China
; Dunhuang Basin
; Gansu
; Qinghai-Xizang Plateau
英文摘要: The Cenozoic uplift of the Tibetan Plateau plays an important role in global climate change, basin-mountain geomorphology formation and desertification in western China. As an important component, the Early Pleistocene uplift process and its influence on the northeastern Tibetan Plateau has been controversial for many years. Quaternary synorogenic sediments within the Dunhuang Basin on the northeastern Tibetan Plateau record the details of plateau uplift. Detailed grain size analysis, rock magnetic properties, mudstone 36Cl dating and 40Ar/39Ar detrital mica dating were conducted on the Quaternary alluvial-fluvial-lacustrine-aeolian sediments of the Dunhuang Basin. The Aksay section in the southern Dunhuang Basin is dominated by conglomerate, sandstone, siltstone and mudstone. Detrital mica 40Ar/39Ar ages show major age populations of 200–160 Ma, 400–200 Ma and 510–430 Ma from the northeastern Altyn Mountains. The results of 36Cl ages and rock magnetic properties show that the Altyn Mountains rapidly uplifted at 1.16 Ma. From 1.16 to 0.80 Ma, the sedimentary environment was stable with two small-scale uplift pulses at ca. 1.03 Ma and 0.98 Ma. After 0.80 Ma, the climate became arid, and the Kumtag Desert formed in the Dunhuang Basin. These multistage uplifts are also widely found in the northeastern Tibetan Plateau. The Early Pleistocene uplift of the Altyn Mountains, corresponding to the Kunhuang Movement, resulted in the northeastern margin of the Tibetan Plateau reaching its present height and climate changeing towards drought in this region. © 2019 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/159857
Appears in Collections: 气候变化与战略
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作者单位: Guangdong Provincial Key Lab of Geodynamics and Geohazards, School of Earth Sciences and Engineering, Sun Yat-sen University, Guangzhou, China; Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai, China; China Geological Survey, Beijing, China; Key Lab of Submarine Geosciences and Prospecting Techniques, MOE, Institute of Advanced Ocean Study, College of Marine Geology, Ocean University of China, Qingdao, China; Department of Geography and Geology, Paris-Lodron-University of Salzburg, Salzburg, Austria
Recommended Citation:
Liu Y.,Ren S.,Liu Y.,et al. Early Pleistocene uplift of the northeastern Tibetan Plateau: Evidence from the Dunhuang Basin, NW China[J]. Journal of Asian Earth Sciences,2020-01-01,188