ON THE ENVIRONMENTAL CHANGES SINCE 15 ka BP IN THE ORDOS PLATEAU

JIANG Fu-chu; WANG Shu-bing; FU Jian-li; LI Chao-zhu; Cai Yao

Volume 20 Issue 2

Jun. 2014

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Article Navigation > Journal of Geomechanics > 2014 > 20(2): 165-173

JIANG Fu-chu, WANG Shu-bing, FU Jian-li, et al., 2014. ON THE ENVIRONMENTAL CHANGES SINCE 15 ka BP IN THE ORDOS PLATEAU. Journal of Geomechanics, 20 (2): 165-173.

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JIANG Fu-chu, WANG Shu-bing, FU Jian-li, et al., 2014. ON THE ENVIRONMENTAL CHANGES SINCE 15 ka BP IN THE ORDOS PLATEAU. Journal of Geomechanics, 20 (2): 165-173.

Citation:

JIANG Fu-chu, WANG Shu-bing, FU Jian-li, et al., 2014. ON THE ENVIRONMENTAL CHANGES SINCE 15 ka BP IN THE ORDOS PLATEAU. Journal of Geomechanics, 20 (2): 165-173.

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ON THE ENVIRONMENTAL CHANGES SINCE 15 ka BP IN THE ORDOS PLATEAU

1.
Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing 100081, China
2.
Insititute of Geology and Mineral of Zhejiang Province, Hangzhou 310007, China

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Abstract

Abstract

In this paper, the climatic and environmental evolution since past nearly 15 kaBP were revealed by the comprehensive analysis of grain size, magnetic susceptibility and chrominance from lacustrine deposits in the Shejialiang Lake Area, central Ordos Plateau. It's revealed that during 14.3~11.9 kaBP, at depth of 235~205 cm, depositional environment are dry and cold relatively. 11.9~4.0 kaBP, at depth of 205~85 cm, sediment proxies reflect that abundant rainfall, enlarging lake, and the lake has developed into a stable deep-water condition, wetter climate possibly due to increase monsoon activity. 4.0~0 kaBP, at depth of 85~0 cm, showed that the climatic characteristics were fluctuated by a large margin, that was period of alternate cool dry and warm wet, and the water level of Shejialiang Lake has been fluctuate. That frequency and intensity of sandstorms have strengthened, Including of 1.2~1.4 kaBP, at depth of 25~30 cm, It was one of the driest period, the strong dust storm are frequent, and that deposited coarse sandy layer.
- lacustrine deposits,
- environmental evolution,
- Ordos Plateau

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References(23)

References

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