6 Advances in the Application and Development of Terrestrial Paleoclimate Proxies (Posters)

Monday, 13 March 2017
9:00 AM - 5:30 PM
Grand Ballroom CDE

HIGH-RESOLUTION SUMMER MONSOON INTENSITY VARIATIONS IN CENTRAL CHINA DURING 27-11 KA B.P. AS REVEALED BY STALAGMITE δ18O

Paper number: 6-1
Program: Theme Sessions
Time: 9:00 AM – 5:30 PM

Authors

  • Dong Li Presenting Author
    Institute of Earth Environment, CAS, XI'AN

Abstract

Based on 17 230Th ages and 344 oxygen isotope analyses of stalagmite XL15 from Xianglong Cave, central China, we reconstructed the Asian summer monsoon intensity variations with a resolution of ~40 years during 27-11 ka B.P. The results are highly similar with the ice core oxygen isotope record from Greenland on orbital- to millennial- scales. Our record is also similar with the previously-published Hulu Cave record, but with larger amplitude, which may be ascribed to further north of Xianglong cave from moisture sources. We find a distinct increasing of δ18O in XL15 at ~24 ka B.P., ~16 ka B.P. and ~12 ka B.P., indicating the three millennial-scale climate events(H2、H1、YD)since LGM recorded well in central China.

Geological Society of America Abstracts with Programs. Vol. 49, No. 1

doi: 10.1130/abs/2017SC-289346

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