noaa-other-26290 Xiaoshuizi, NE Tibetan Plateau Late Miocene-Pliocene Multiproxy Red Clay Data Li, X.; Peng, T.; Ma, Z.; Li, M.; Feng, Z.; Guo, B.; Yu, H.; Ye, X.; Hui, Z.; Song, C.; Li, J.J. Xiaoshuizi, NE Tibetan Plateau Late Miocene-Pliocene Multiproxy Red Clay Data 2019-03-03 NCDC-Paleoclimatology ONLINE Files Pending https://www.ncdc.noaa.gov/paleo/study/26290 Investigator X. Li Investigator T. Peng Investigator Z. Ma Investigator M. Li Investigator Z. Feng Investigator B. Guo Investigator H. Yu Investigator X. Ye Investigator Z. Hui Investigator C. Song Investigator J.J. Li earth science paleoclimate loess geoscientificInformation 6710000 cal yr BP 3580000 cal yr BP Complete 35.81154 35.81154 103.8623 103.8623 2758 2758 Continent Asia Eastern Asia China Xiaoshuizi section>LATITUDE 35.81154>LONGITUDE 103.8623 None Please cite original publication, online resource, dataset and publication DOIs (where available), and date accessed when using downloaded data. If there is no publication information, please cite investigator, title, online resource, and date accessed. The appearance of external links associated with a dataset does not constitute endorsement by the Department of Commerce/National Oceanic and Atmospheric Administration of external Web sites or the information, products or services contained therein. For other than authorized activities, the Department of Commerce/NOAA does not exercise any editorial control over the information you may find at these locations. These links are provided consistent with the stated purpose of this Department of Commerce/NOAA Web site. English DOC/NOAA/NESDIS/NCEI National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce https://www.ncdc.noaa.gov/data-access/paleoclimatology-data DATA Center Contact Bruce Bauer bruce.a.bauer@noaa.gov paleo@noaa.gov 303-497-6280 303-497-6513

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Boulder CO 80305-3328 USA online ASCII Xiaomiao Li, Tingjiang Peng, Zhenhua Ma, Meng Li, Zhantao Feng, Benhong Guo, Hao Yu, Xiyan Ye, Zhengchuang Hui, Chunhui Song, and Jijun Li 2019 Climate of the Past 15 2 10.5194/cp-15-405-2019 https://www.clim-past.net/15/405/2019/

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 arid-humid climatic transition near -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. STUDY NOTES: Grain size, magnetic susceptibility, and geochemical (CaCO3, Na2O, K2O, Rb, Sr) data from the Xiaoshuizi red clay section, NE Tibetan Plateau, for 6.7-3.6 million years before present.

GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/li2019/xiaoshuizi2019gs.txt NOAA Template File; Xiaoshuizi Red Clay Grain Size Data GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/li2019/xiaoshuizi2019ms.txt NOAA Template File; Xiaoshuizi Red Clay Magnetic Susceptibility Data GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/li2019/xiaoshuizi2019xrf.txt NOAA Template File; Xiaoshuizi Red Clay XRF Data GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/li2019/xiaoshuizi2019carb.txt NOAA Template File; Xiaoshuizi Red Clay Calcium Carbonate Data USA/NOAA DIF Version 9.8.4 2019-04-08 2019-04-08