干旱区生态环境知识资源中心(Arid): Late Miocene-Pliocene climate evolution recorded by the red clay cover on the Xiaoshuizi planation surface, NE Tibetan Plateau

Arid

DOI	10.5194/cp-15-405-2019
	Late Miocene-Pliocene climate evolution recorded by the red clay cover on the Xiaoshuizi planation surface, NE Tibetan Plateau
	Li, Xiaomiao 1; Peng, Tingjiang 1; Ma, Zhenhua 1; Li, Meng 1; Feng, Zhantao 1; Guo, Benhong 1; Yu, Hao 1; Ye, Xiyan 1; Hui, Zhengchuang 1; Song, Chunhui 2; Li, Jijun 1,3
通讯作者	Li, Jijun
来源期刊	CLIMATE OF THE PAST
ISSN	1814-9324
EISSN	1814-9332
出版年	2019
卷号	15 期号:2 页码:405-421
英文摘要	The Pliocene climate and its driving mechanisms have attracted substantial scientific interest because of their potential as an analog for near-future climates. The late Miocene-Pliocene red clay sequence of the main Chinese Loess Plateau (CLP) has been widely used to reconstruct the history of interior Asian aridification and the Asian monsoon. However, red clay sequences deposited on the planation surface of the Tibetan Plateau (TP) are rare. A continuous red clay sequence was recently discovered on the uplifted Xiaoshuizi (XSZ) planation surface in the Maxian Mountains, northeastern (NE) TP. In this study, we analyzed multiple climatic proxies from the XSZ red clay sequence with the aim of reconstructing the late Miocene-early Pliocene climate history of the NE TP and to assess regional climatic differences between the central and western CLP. Our results demonstrate the occurrence of minimal weathering and pedogenesis during the late Miocene, which indicates that the climate was arid. We speculate that precipitation delivered by the paleo East Asian summer monsoon (EASM) was limited during this period and that the intensification of the circulation of the westerlies resulted in arid conditions in the study region. Subsequently, enhanced weathering and pedogenesis occurred intermittently during 4.7-3.9 Ma, which attests to an increase in effective moisture. We ascribe the aridhumid climatic transition near similar to 4.7 Ma to the expansion of the paleo-EASM. The warming of the high northern latitudes in response to the closure of the Panama Seaway may have been responsible for the thermodynamical enhancement of the paleo-EASM system, which permitted more moisture to be transported to the NE TP.
类型	Article
语种	英语
国家	Peoples R China
开放获取类型	Green Submitted, gold
收录类别	SCI-E
WOS记录号	WOS:000460840500001
WOS关键词	CHINESE LOESS PLATEAU ; ASIAN SUMMER MONSOON ; PERMANENT EL-NINO ; GRAIN-SIZE ; TARIM BASIN ; MAGNETIC-SUSCEPTIBILITY ; PALYNOLOGICAL EVIDENCE ; TROPICAL PACIFIC ; NORTHERN CHINA ; UPLIFT
WOS类目	Geosciences, Multidisciplinary ; Meteorology & Atmospheric Sciences
WOS研究方向	Geology ; Meteorology & Atmospheric Sciences
来源机构	兰州大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/214918
作者单位	1.Lanzhou Univ, Coll Earth & Environm Sci, MOE Key Lab Western Chinas Environm Syst, Lanzhou 730000, Gansu, Peoples R China; 2.Lanzhou Univ, Sch Earth Sci, Key Lab Western Chinas Mineral Resources Gansu Pr, Lanzhou 730000, Gansu, Peoples R China; 3.Nanjing Normal Univ, Coll Geog Sci, Nanjing 210023, Jiangsu, Peoples R China
推荐引用方式 GB/T 7714	Li, Xiaomiao,Peng, Tingjiang,Ma, Zhenhua,et al. Late Miocene-Pliocene climate evolution recorded by the red clay cover on the Xiaoshuizi planation surface, NE Tibetan Plateau[J]. 兰州大学,2019,15(2):405-421.
APA	Li, Xiaomiao.,Peng, Tingjiang.,Ma, Zhenhua.,Li, Meng.,Feng, Zhantao.,...&Li, Jijun.(2019).Late Miocene-Pliocene climate evolution recorded by the red clay cover on the Xiaoshuizi planation surface, NE Tibetan Plateau.CLIMATE OF THE PAST,15(2),405-421.
MLA	Li, Xiaomiao,et al."Late Miocene-Pliocene climate evolution recorded by the red clay cover on the Xiaoshuizi planation surface, NE Tibetan Plateau".CLIMATE OF THE PAST 15.2(2019):405-421.