气候变化领域集成服务门户(CCPortal): Late early Oligocene East Asian summer monsoon in the NE Tibetan Plateau: Evidence from a palynological record from the Lanzhou Basin, China

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DOI	10.1016/j.jseaes.2013.07.003
	Late early Oligocene East Asian summer monsoon in the NE Tibetan Plateau: Evidence from a palynological record from the Lanzhou Basin, China
	Miao, Yunfa; Wu, Fuli; Herrmann, Mark; Yan, Xiaoli; Meng, Qingquan
通讯作者	Wu, FL (通讯作者)
发表日期	2013
ISSN	1367-9120
EISSN	1878-5786
起始页码	46
结束页码	57
卷号	75
英文摘要	The latest Early Oligocene record from the Lanzhou Basin, northeast Tibetan Plateau, presents an opportunity to investigate early stage of the Asian monsoon patterns due to its special location. The record provides insights into the global zonal climate and the development of the non-zonal monsoon system. The study identifies possible links between factors governing the monsoonal patters and paleoaltimetry of the Tibetan Plateau. Sporomorphs results indicate the dominance of arboreal plants (both coniferous and broad-leaved) corresponding to a wetter environment, while xerophytes were rare. Based on the Coexistence Approach (CA), the climate of the Lanzhou Basin is likely to have been similar to that of present-day sites in Southeast China, i.e., characterized by relatively high precipitation and a warm climate. Both qualitative analysis of the sporomorph assemblages and quantitative calculations indicate that monsoons similar to those of the present daywere formed in East Asia and reached the Lanzhou region in inner Asia. High percentages of Picea, generally associated with the relatively high topography of the NE Tibetan Plateau, correlate well with the high paleoaltimetry of the main Tibetan Plateau during the Oligocene. Thus, the East Asian monsoon during this time can be closely linked to an uplifted Tibetan Plateau, following modeled relationships between the Tibetan Plateau and monsoon patterns. However, we believe such high precipitation may have mainly resulted from the orographic barrier, rather than being driven by zonal climate factors. Further investigation into the extent of, and controls on, the region of high precipitation should help clarify the role of these processes. (C) 2013 Elsevier Ltd. All rights reserved.
关键词	LATE EOCENE COEXISTENCE APPROACH TERTIARY DEPOSITS CLIMATE-CHANGE SOUTHERN ASIA XINING BASIN UPLIFT POLLEN PALEOALTIMETRY SURFACE
英文关键词	Oligocene; Sporopollen; East Asian monsoon; Tibetan Plateau
语种	英语
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:000324961400006
来源期刊	JOURNAL OF ASIAN EARTH SCIENCES
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/258165
推荐引用方式 GB/T 7714	Miao, Yunfa,Wu, Fuli,Herrmann, Mark,et al. Late early Oligocene East Asian summer monsoon in the NE Tibetan Plateau: Evidence from a palynological record from the Lanzhou Basin, China[J]. 中国科学院青藏高原研究所,2013,75.
APA	Miao, Yunfa,Wu, Fuli,Herrmann, Mark,Yan, Xiaoli,&Meng, Qingquan.(2013).Late early Oligocene East Asian summer monsoon in the NE Tibetan Plateau: Evidence from a palynological record from the Lanzhou Basin, China.JOURNAL OF ASIAN EARTH SCIENCES,75.
MLA	Miao, Yunfa,et al."Late early Oligocene East Asian summer monsoon in the NE Tibetan Plateau: Evidence from a palynological record from the Lanzhou Basin, China".JOURNAL OF ASIAN EARTH SCIENCES 75(2013).