气候变化领域集成服务门户(CCPortal): The Andean-type Gangdese Mountains: Paleoelevation record from the Paleocene-Eocene Linzhou Basin

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DOI	10.1016/j.epsl.2014.01.045
	The Andean-type Gangdese Mountains: Paleoelevation record from the Paleocene-Eocene Linzhou Basin
	Ding, Lin; Xu, Qiang; Yue, Yahui; Wang, Houqi; Cai, Fulong; Li, Shun
通讯作者	Ding, L (通讯作者)
发表日期	2014
ISSN	0012-821X
EISSN	1385-013X
起始页码	250
结束页码	264
卷号	392
英文摘要	Paleoelevation reconstruction using oxygen isotopes is making a significant contribution to understanding the Cenozoic uplift of the Himalayas and the Tibetan Plateau. This paper presents new oxygen and carbon isotopic compositions from well dated Tertiary paleosols, lacustrine calcareous carbonates, and marls from the Nianbo (60-54 Ma) and upper Pana Formations (51-48 Ma) of the Linzizong Group in the Linzhou (Penbo) Basin. The sediments of the Nianbo Formation, which are >180 m-thick, were deposited in alluvial fans, braided rivers, fan deltas, and on nearshore to offshore lacustrine settings, whereas those of the upper Pana Formation are >100 m-thick and are comprised predominantly of proximal alluvial fan and braided river deposits. Correlations between the lithofacies and stable isotopic compositions suggest that the basin was mainly a hydrologically open environment. It is confirmed that the delta O-18(c) and delta C-13(c) values from Nianbo and Pana Formations have not yet been reset by late-stage diagenesis based on petrographic examination, oxygen isotope of the fossil ostracodes, and tectonic deformation of strata. The paleoelevations are reconstructed using the corrected most negative paleosurface water delta O-18(psw) values. These imply that the Linzhou area had attained an elevation of 4500 +/- 400 m during the period of the lndo-Asian collision, i.e., achieved a near-present elevation, and may form an Andean-type mountain range stretching the Gangdese arc before collision. The Gangdese Mountains probably maintained high elevations since at least the Paleocene and could play a crucial role in the climate change in the interior of the Tibetan Plateau during the Early Cenozoic. The paleogeomorphic scenario of the Eocene Tibet is proposed to exist at two high mountains in excess of 4500 m that sandwiched a low elevation basin. (C) 2014 Elsevier B.V. All rights reserved.
关键词	INDIA-ASIA COLLISION ZIRCON U-PB STABLE-ISOTOPE SOUTHERN TIBET LHASA TERRANE CRETACEOUS STRATA UPLIFT HISTORY LATE MIOCENE EVOLUTION PLATEAU
英文关键词	oxygen isotope; fossil ostracode; paleoelevation; Gangdese Mountains; Tibetan Plateau
语种	英语
WOS研究方向	Geochemistry & Geophysics
WOS类目	Geochemistry & Geophysics
WOS记录号	WOS:000349141100025
来源期刊	EARTH AND PLANETARY SCIENCE 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/258249
推荐引用方式 GB/T 7714	Ding, Lin,Xu, Qiang,Yue, Yahui,et al. The Andean-type Gangdese Mountains: Paleoelevation record from the Paleocene-Eocene Linzhou Basin[J]. 中国科学院青藏高原研究所,2014,392.
APA	Ding, Lin,Xu, Qiang,Yue, Yahui,Wang, Houqi,Cai, Fulong,&Li, Shun.(2014).The Andean-type Gangdese Mountains: Paleoelevation record from the Paleocene-Eocene Linzhou Basin.EARTH AND PLANETARY SCIENCE LETTERS,392.
MLA	Ding, Lin,et al."The Andean-type Gangdese Mountains: Paleoelevation record from the Paleocene-Eocene Linzhou Basin".EARTH AND PLANETARY SCIENCE LETTERS 392(2014).