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. Li, X. Peng, T. Ma, Z. Li, M. Feng, Z. Guo, B. Yu, H. Ye, X. Hui, Z. Song, C. Li, J.J. earth science/paleoclimate/loess (Xiaoshuizi section>LATITUDE 35.81154>LONGITUDE 103.8623) 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. NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Li, X. Investigator : Peng, T. Investigator : Ma, Z. Investigator : Li, M. Investigator : Feng, Z. Investigator : Guo, B. Investigator : Yu, H. Investigator : Ye, X. Investigator : Hui, Z. Investigator : Song, C. Investigator : Li, J.J. 2019-03-03 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/26290 https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/li2019/xiaoshuizi2019gs.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/li2019/xiaoshuizi2019ms.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/li2019/xiaoshuizi2019xrf.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/li2019/xiaoshuizi2019carb.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/li2019/xiaoshuizi2019gs.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/li2019/xiaoshuizi2019ms.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/li2019/xiaoshuizi2019xrf.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/li2019/xiaoshuizi2019carb.txt English https://www.ncdc.noaa.gov/paleo/study/26290 https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/li2019/xiaoshuizi2019gs.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/li2019/xiaoshuizi2019ms.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/li2019/xiaoshuizi2019xrf.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/li2019/xiaoshuizi2019carb.txt Xiaomiao Li, Tingjiang Peng, Zhenhua Ma, Meng Li, Zhantao Feng, Benhong Guo, Hao Yu, Xiyan Ye, Zhengchuang Hui, Chunhui Song, and Jijun Li2019Late Miocene-Pliocene climate evolution recorded by the red clay cover on the Xiaoshuizi planation surface, NE Tibetan PlateauClimate of the Past15210.5194/cp-15-405-2019https://www.clim-past.net/15/405/2019/ START YEAR: 6710000 cal yr BP * END YEAR: 3580000 cal yr BP 103.8623 35.81154 103.8623 35.81154