Chongqing, Southwest China Holocene Stalagmite Oxygen Isotope Data Yang, X.-L.; Yang, H.; Wang, B.; Huang, L.-J.; Shen, C.-C.; Edwards, R.L.; Cheng, H. Yang, X.-L. Yang, H. Wang, B. Huang, L.-J. Shen, C.-C. Edwards, R.L. Cheng, H. Monsoon earth science/paleoclimate/speleothems (Heifeng Cave>LATITUDE 29.0167>LONGITUDE 107.1792) (Shizi Cave>LATITUDE 29.6822>LONGITUDE 106.2881) (Chongqing>LATITUDE >LONGITUDE ) (Jinfo Cave>LATITUDE 29.0167>LONGITUDE 107.1792) The timing and duration of the Holocene East Asian summer monsoon (EASM) maximum and the interpretation of Chinese stalagmite d18O records have long been disputed. Notably, interpretations of Holocene EASM variations are frequently based on a single record or study area and are often contradictory. In this study, we conducted stable isotope analyses of four Holocene stalagmites from Chongqing, southwest China. The results reveal differences in the timing of the Holocene EASM maximum and to try to resolve the inconsistency we analyzed and statistically integrated a total of 16 Holocene stalagmite records from 14 caves in the EASM region. The resulting synthesized Holocene stalagmite d18O (d18Osyn) record is in agreement with other EASM records and confirms that stalagmite d18O records are a valid indicator of EASM intensity, rather of local precipitation amount. The d18Osyn record shows that the EASM intensified rapidly from the onset of the early Holocene; notably, however, there were distinct EASM oscillations in the early Holocene, consisting of three abrupt millennial-scale events. This indicates that, contrary to several previous interpretations, the early Holocene EASM was unstable. Subsequently, during 8-6 kyr BP, the EASM was relatively stable and strong, with the strongest monsoon occurring during 8-7 kyr BP. This evidence of a stable and strong mid-Holocene EASM in eastern China is in accord with the classical view of a mid-Holocene Optimum in China. STUDY NOTES: Oxygen isotope (d18O) data from 4 Holocene stalagmites collected from three caves in Chongqing, southwest China. Included are data from stalagmite QM09 from Shizi Cave, stalagmites J12 and J13 from Jinfo Cave, stalagmite HF01 from Heifeng Cave, plus stacked data from all 4 Chongqing stalagmites. NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Yang, X.-L. Investigator : Yang, H. Investigator : Wang, B. Investigator : Huang, L.-J. Investigator : Shen, C.-C. Investigator : Edwards, R.L. Investigator : Cheng, H. 2019-03-29 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/26510 https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/asia/china/jinfo2019j13d18o.txt https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/asia/china/jinfo2019j12d18o.txt https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/asia/china/chongqing2019d18o.txt https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/asia/china/shizi2019qm09d18o.txt https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/asia/china/heifeng2019hf01d18o.txt https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/asia/china/jinfo2019j13d18o.txt https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/asia/china/jinfo2019j12d18o.txt https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/asia/china/chongqing2019d18o.txt https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/asia/china/shizi2019qm09d18o.txt https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/asia/china/heifeng2019hf01d18o.txt English https://www.ncdc.noaa.gov/paleo/study/26510 https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/asia/china/jinfo2019j13d18o.txt https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/asia/china/jinfo2019j12d18o.txt https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/asia/china/chongqing2019d18o.txt https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/asia/china/shizi2019qm09d18o.txt https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/asia/china/heifeng2019hf01d18o.txt Xunlin Yang, Hong Yang, Baoyan Wang, Li-Jung Huang, Chuan-Chou Shen, R. Lawrence Edwards, Hai Cheng2019Early-Holocene monsoon instability and climatic optimum recorded by Chinese stalagmitesThe Holocene10.1177/0959683619831433https://journals.sagepub.com/doi/10.1177/0959683619831433 START YEAR: 11630 cal yr BP * END YEAR: 20 cal yr BP 106.2881 29 107.2 29.7