气候变化领域集成服务门户(CCPortal): Parathethys Last Gasp in Central Asia and Late Oligocene Accelerated Uplift of the Pamirs

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DOI	10.1029/2019GL084838
	Parathethys Last Gasp in Central Asia and Late Oligocene Accelerated Uplift of the Pamirs
	Wang, Xin; Carrapa, Barbara; Chapman, James B.; Henriquez, Susana; Wang, Mi; DeCelles, Peter G.; Li, Zaijun; Wang, Fei; Oimuhammadzoda, Ilhomjon; Gadoev, Mustafo; Chen, Fahu
通讯作者	Wang, X (通讯作者)
发表日期	2019
ISSN	0094-8276
EISSN	1944-8007
起始页码	11773
结束页码	11781
卷号	46 期号:21
英文摘要	Cenozoic sedimentary rocks in the Tajik Basin record the history of retreat of the Paratethys from central Asia, tectonic activity within the surrounding Pamir and Tian Shan mountains, and Asian aridification. However, there remains a paucity of precise chronological constraints on the sequences from this region. Here we present integrated magnetostratigraphic, detrital zircon and monazite U-Pb geochronologic, and detrital apatite fission track thermochronologic data from the lower Cenozoic sedimentary sequences in the Tajik Basin. Our results indicate that the investigated sedimentary rocks were deposited between similar to 41 and 23.3 Ma, with a depositional hiatus between similar to 36 and 31 Ma. The last two marine regressions were dated at similar to 41 and similar to 37.4 Ma, respectively. Eolian sandy loess dominates the sequences from similar to 31 to similar to 25 Ma and gradually transitions to fluvial facies after similar to 25 Ma, consistent with late Oligocene to early Miocene acceleration of active deformation, uplift, and exhumation of the Pamirs. Plain Language Summary Central Asia has experienced prolonged climatic changes, from a relatively hot and humid climate, influenced by the Paratethys, to an extremely dry continental climate, during the Cenozoic. Precise chronological constraints on the sedimentary sequences that record this transition are required for resolving the forcing mechanisms behind this significant paleoclimate change. We report a reliable chronological framework for the lower Cenozoic sedimentary record in the Tajik Basin, which was occupied by the Paratethys during the early Cenozoic and a foreland basin related to uplift of the Pamir-Tian Shan orogen. Our new data help advance scientific understanding of the sea retreat, mountain building, and long-term climate changes in central Asia during the early Cenozoic.
关键词	NORTHERN TIBETAN PLATEAU SOUTHWESTERN TIAN-SHAN TARIM BASIN SEAWATER RETREAT EVOLUTION CLIMATE EXHUMATION GEOCHRONOLOGY INDENTATION CONSTRAINTS
英文关键词	Magnetostratigraphy; Thermochronology; Cenozoic; Central Asia; Paratethys; Pamir
语种	英语
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:000493703000001
来源期刊	GEOPHYSICAL RESEARCH LETTERS
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/259613
推荐引用方式 GB/T 7714	Wang, Xin,Carrapa, Barbara,Chapman, James B.,et al. Parathethys Last Gasp in Central Asia and Late Oligocene Accelerated Uplift of the Pamirs[J]. 中国科学院青藏高原研究所,2019,46(21).
APA	Wang, Xin.,Carrapa, Barbara.,Chapman, James B..,Henriquez, Susana.,Wang, Mi.,...&Chen, Fahu.(2019).Parathethys Last Gasp in Central Asia and Late Oligocene Accelerated Uplift of the Pamirs.GEOPHYSICAL RESEARCH LETTERS,46(21).
MLA	Wang, Xin,et al."Parathethys Last Gasp in Central Asia and Late Oligocene Accelerated Uplift of the Pamirs".GEOPHYSICAL RESEARCH LETTERS 46.21(2019).