湖北清江和尚洞石笋的高分辨率碳氧同位素及古气候研究

黄俊华; 胡超涌; 周群峰

Volume 25 Issue 5

Sep. 2000

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Article Navigation > Earth Science > 2000 > 25(5): 505-509

HUANG Junhua, HU Chaoyong, ZHOU Qunfeng, 2000. HIGH-RESOLUTION CARBON AND OXYGEN ISOTOPE RECORDS FROM STALAGMITE AND PALAEOCLIMATE IN HESHANGDONG CAVE, QINGJIANG, HUBEI PROVINCE. Earth Science, 25(5): 505-509.

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HIGH-RESOLUTION CARBON AND OXYGEN ISOTOPE RECORDS FROM STALAGMITE AND PALAEOCLIMATE IN HESHANGDONG CAVE, QINGJIANG, HUBEI PROVINCE

Test Center, China University of Geosciences, Wuhan 430074, China

Received Date: 2000-06-21
Publish Date: 2000-09-25

Abstract

Abstract

The palaeoclimatic and palaeo environmental information in Hubei region 19.0 to 6.9 thousand years ago is obtained from the analyses of the sedimentary, carbon and oxygen isotope features of the stalagmite numbered as HS-2 in the Heshangdong cave, Qingjiang, Hubei and with the uranium series dating method. The following four climate changes can be concluded (with the average resolution 17 a, and the local resolution 7 a) : (1) In 19.1~16.6 ka, the smaller values of both δ(¹³C) and δ(¹⁸O) suggest a cooler and wetter climate. (2) In 16.6~11.1 ka, the greater values of both δ(¹³C) and δ(¹⁸O) suggest a dry and warm climate. (3) In 11.1~10.3 ka, the sudden return of the cold climate in the dry and hot period may have corresponded to the Younger Dryas event. (4) In 10.3~6.9 ka, the change from the warm and rainy climate to the cold climate reflects the alternate changes from humid, cold, dry hot, up to the warm weather, showing some climate change patterns in the order of 100 or 1 000 years.
- carbon and oxygen isotopes,
- stalagmite,
- palaeoclimate,
- palaeovegetation,
- Heshangdong cave,
- Hubei Province

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References(14)

References

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