Yamen Cave, China Deglacial Speleothem Oxygen Isotope Data Yang, Y.; Yuan, D.X.; Cheng, H.; Zhang, M.L.; Qin, J.M.; Lin, Y.S.; Zhu, X.Y.; Edwards, R.L. Yang, Y. Yuan, D.X. Cheng, H. Zhang, M.L. Qin, J.M. Lin, Y.S. Zhu, X.Y. Edwards, R.L. Monsoon earth science/paleoclimate/speleothems (depth,null,null,millimeter,null,speleothems,null,null,N,null) earth science/paleoclimate/speleothems (delta 18O,calcium carbonate,null,per mil VPDB,null,speleothems,raw,isotope ratio mass spectrometry,N,null) earth science/paleoclimate/speleothems (age,null,null,calendar kiloyear before present,null,speleothems,null,null,N,null) earth science/paleoclimate/speleothems (Yamen Cave>LATITUDE 25.4833>LONGITUDE 107.9) Based on 33 U/Th dates and 1020 oxygen isotopic data from stalagmite Y1 from Yamen Cave, Guizhou Province, China, a record of the Asian Summer Monsoon (ASM) was established. The record covers the last deglaciation and the early Holocene (from 16.2 to 7.3 ka BP) with an average oxygen isotope resolution of 9 years. The main millennial-scale deglacial events first identified in Greenland (Greenland Interstadial Events: GIS 1e through GIS 1a) and later in China are clearly present in the Y1 record. By analogy to earlier work, we refer to these as Chinese Interstadials (CIS): CIS A.1e to CIS A.1a. The onset of these events in Y1 d18O records are nominally dated at: 14750±50, 14100±60, 13870±80, 13370±80, and 12990±80 a BP. The end of CIS A.1a or the beginning of the Younger Dryas (YD) event is nominally at 12850±50 a BP and the end of the YD dates to 11500±40 a BP. The d18O values shift by close to 3 per mil during the transition into the Bolling-Allerod (BA, the onset of CIS A.1e) and at the end of the YD. Comparisons of Y1 to previously published early Holocene records show no significant phase differences. Thus, the East Asia Monsoon and the Indian Monsoon do not appear to have been out of phase during this interval. The Y1 record confirms earlier work that suggested that solar insolation and North Atlantic climate both affect the Asian Monsoon. STUDY NOTES: High-resolution oxygen isotope data and U/Th dating results for the last deglaciation and the early Holocene (16.3 to 7.3 ka BP) with an average oxygen isotope resolution of 9 years. Data from stalagmite Y1 collected in Yamen cave, Guizhou province, Southwestern China. NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Yang, Y. Investigator : Yuan, D.X. Investigator : Cheng, H. Investigator : Zhang, M.L. Investigator : Qin, J.M. Investigator : Lin, Y.S. Investigator : Zhu, X.Y. Investigator : Edwards, R.L. 2010-07-01 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/10443 https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/asia/china/yamen2010.xls https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/asia/china/yamen2010.txt https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/asia/china/yamen2010.xls https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/asia/china/yamen2010.txt English https://www.ncdc.noaa.gov/paleo/study/10443 https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/asia/china/yamen2010.xls https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/asia/china/yamen2010.txt Yang, Y., D.X. Yuan, H. Cheng, M.L. Zhang, J.M. Qin, Y.S. Lin, X.Y. Zhu, and R.L. Edwards. 2010. Precise dating of abrupt shifts in the Asian Monsoon during the last deglaciation based on stalagmite data from Yamen Cave, Guizhou Province, China. Sci China Earth Sci, Vol. 53, No. 5, pp. 633-641. DOI: 10.1007/s11430-010-0025-z START YEAR: 16319 cal yr BP * END YEAR: 7322 cal yr BP 107.9 25.4833 107.9 25.4833