CLIMATIC-ENVIRONMENTAL EVOLUTION IN GAHAI LAKE AREA SINCE THE LATE GLACIAL PERIOD FROM LOSS-ON-IGNITION

CHEN Zhong; MA Hai-zhou; CAO Guang-chao; ZHANG Xi-ying; ZHOU Du-jun; YAO Yuan; GAO Zhang-hong; TAN Hong-bing

Marine Geology & Quaternary Geology > 2007 > 27(1): 131-138.

CHEN Zhong, MA Hai-zhou, CAO Guang-chao, ZHANG Xi-ying, ZHOU Du-jun, YAO Yuan, GAO Zhang-hong, TAN Hong-bing. CLIMATIC-ENVIRONMENTAL EVOLUTION IN GAHAI LAKE AREA SINCE THE LATE GLACIAL PERIOD FROM LOSS-ON-IGNITION[J]. Marine Geology & Quaternary Geology, 2007, 27(1): 131-138.

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CLIMATIC-ENVIRONMENTAL EVOLUTION IN GAHAI LAKE AREA SINCE THE LATE GLACIAL PERIOD FROM LOSS-ON-IGNITION

1 Qinghai Institute of Salt Lake, CAS, Xining 810008, China;
2 College of Life and Geography Science, Qinghai Normal University, Xining 810008, China;
3 Nanjing Institute of Geography and limnology, CAS, Nanjing 210008, China

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Received Date: August 13, 2006
Revised Date: November 02, 2006

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Abstract

Abstract

Based on analyses of Loss-on-Ignition (LOI), carbonate content and sediment characteristics, the authors reconstruct the climatic and environmental evolution of the Gahai Lake area since the Late Glacial period. The results cover the Aller d period (between 12 710 and 12 380 cal.aBP), the Younger Dryas period (between 12 380 and 11 360 cal.aBP), and the Holocene. The Holocene can be divided into three periods:the early Holocene (11 360~8 240 cal.aBP), which was dry but unstable and featured rising temperatures; the mid-Holocene (8 240~3 200 cal.aBP), which was warm and wet in early period and cool and dry in late period; and the late Holocene (since 3 200 cal.aBP), which was cold and dry in early period and relativele warm and dry in late period. Results also show a warm-wet event around 1 500 cal.aBP.
- Loss-on-Ignition (LOI),
- carbonate content,
- the Late Glacial period,
- Gahai Lake

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References

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CLIMATIC-ENVIRONMENTAL EVOLUTION IN GAHAI LAKE AREA SINCE THE LATE GLACIAL PERIOD FROM LOSS-ON-IGNITION