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DOI	10.1130/G32530.1
	Thermochronologic evidence for plateau formation in central Tibet by 45 Ma
	Rohrmann, Alexander; Kapp, Paul; Carrapa, Barbara; Reiners, Peter W.; Guynn, Jerome; Ding, Lin; Heizler, Matthew
通讯作者	Rohrmann, A (通讯作者)
发表日期	2012
ISSN	0091-7613
EISSN	1943-2682
起始页码	187
结束页码	190
卷号	40 期号:2
英文摘要	The timing of Tibetan plateau development remains elusive, despite its importance for evaluating models of continental lithosphere deformation and associated changes in surface elevation and climate. We present new thermochronologic data [biotite and K-feldspar Ar-40/Ar-39, apatite fission track, and apatite (U-Th)/He] from the central Tibetan plateau (Lhasa and Qiangtang terranes). The data indicate that over large regions, rocks underwent rapid to moderate cooling and exhumation during Cretaceous to Eocene time. This was coeval with >50% upper crustal shortening, suggesting substantial crustal thickening and surface elevation gain. Thermal modeling of combined thermochronometers requires exhumation of most samples to depths of <3 km between 85 and 45 Ma, followed by a decrease in erosional exhumation rate to low values of <0.05 mm/yr. The thermochronological results, when interpreted in the context of the deformation and paleoaltimetric history, are best explained by a scenario of plateau growth that began locally in central Tibet during the Late Cretaceous and expanded to encompass most of central Tibet by 45 Ma.
关键词	SOUTHERN TIBET SOUTHWESTERN TIBET TECTONIC EVOLUTION CENOZOIC UPLIFT EASTERN MARGIN SOUTHEASTERN HISTORY BASIN DEFORMATION CONSTRAINTS
语种	英语
WOS研究方向	Geology
WOS类目	Geology
WOS记录号	WOS:000299668100024
来源期刊	GEOLOGY
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/258077
推荐引用方式 GB/T 7714	Rohrmann, Alexander,Kapp, Paul,Carrapa, Barbara,et al. Thermochronologic evidence for plateau formation in central Tibet by 45 Ma[J]. 中国科学院青藏高原研究所,2012,40(2).
APA	Rohrmann, Alexander.,Kapp, Paul.,Carrapa, Barbara.,Reiners, Peter W..,Guynn, Jerome.,...&Heizler, Matthew.(2012).Thermochronologic evidence for plateau formation in central Tibet by 45 Ma.GEOLOGY,40(2).
MLA	Rohrmann, Alexander,et al."Thermochronologic evidence for plateau formation in central Tibet by 45 Ma".GEOLOGY 40.2(2012).