DOI: 10.1007/s00531-014-1129-z
Scopus记录号: 2-s2.0-84929996902
论文题名: Late Miocene accelerated exhumation of the Daliang Mountains, southeastern margin of the Tibetan Plateau
作者: Deng B. ; Liu S.-G. ; Enkelmann E. ; Li Z.-W. ; Ehlers T.A. ; Jansa L.
刊名: International Journal of Earth Sciences
ISSN: 14373254
出版年: 2015
卷: 104, 期: 4 起始页码: 1061
结束页码: 1081
语种: 英语
英文关键词: (U–Th)/He
; Daliang Mountains
; Denudation
; Southeastern margin of Tibetan Plateau
; Thermochronology
Scopus关键词: crustal shortening
; crustal structure
; denudation
; exhumation
; Miocene
; thermochronology
; transpression
; uranium series dating
; zircon
; China
; Daliang Mountains
; Qinghai-Xizang Plateau
; Sichuan
英文摘要: The Late Cenozoic evolution of the southeastern margin of the Tibetan Plateau has been well documented, but controversies remain concerning Late Cenozoic acceleration of exhumation. We present 41 new apatite and zircon (U–Th)/He ages from six transects in the Daliang Mountains that provide constraints on the timing and the rate of denudation. We calculated exhumation rates for the transects based on the age versus elevation/structural depth relationship. The results are consistent across the Daliang Mountains and indicate a protracted period of slow cooling and denudation from ~30 to ~10 Ma, with an exhumation rate of ~0.15 mm/year. This slow exhumation is followed by accelerated rates of ~0.4–0.8 mm/year since ~10 Ma. The protracted slow denudation and long residence time within the apatite helium partial retention zone resulted in large variations in single-grain (U–Th)/He ages. We suggest that the post ~10-Ma rapid cooling and exhumation in the Daliang Mountains is driven by the eastward growth of the Tibetan Plateau. Furthermore, we suggest that the mountain building in the Daliang Mountains result from the crustal shortening accompanied with transpression, rather than from the lower crustal channel flow. © 2014, Springer-Verlag Berlin Heidelberg. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84929996902&doi=10.1007%2fs00531-014-1129-z&partnerID=40&md5=d7fa7934fbe99a21a71648920cc25dde
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/70295
Appears in Collections: 影响、适应和脆弱性 气候减缓与适应
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作者单位: State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Chengdu University of Technology, Chengdu, China; Department of Geosciences, Universität Tübingen, Tübingen, Germany; Department of Geology, University of Cincinnati, Cincinnati, OH, United States; Geological Survey of Canada-Atlantic, Dartmouth, NS, Canada
Recommended Citation:
Deng B.,Liu S.-G.,Enkelmann E.,et al. Late Miocene accelerated exhumation of the Daliang Mountains, southeastern margin of the Tibetan Plateau[J]. International Journal of Earth Sciences,2015-01-01,104(4)