AGE OF THE JIAWA FORMATION AND ENVIRONMENTAL EVOLUTION OF LITANG COUNTY,SICHUAN PROVINCE

WANG Shu-bing; Jiang Fu-chu; TIAN Guo-qing; Fu Jian-li; ZHAO Zhi-zhong; XU Qing-hai

Volume 10 Issue 1

Mar. 2004

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Article Navigation > Journal of Geomechanics > 2004 > 10(1): 88-96,39

YAO Hong-xin, LI Wen-sheng, WANG Gen-hou, 2013. OIL AND GAS CHARACTERISTICS OF THRUSTING-NAPPE STRUCTURE BELT IN HUOYANSHAN, XINJIANG. Journal of Geomechanics, 19 (2): 206-213.

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WANG Shu-bing, Jiang Fu-chu, TIAN Guo-qing, et al., 2004. AGE OF THE JIAWA FORMATION AND ENVIRONMENTAL EVOLUTION OF LITANG COUNTY,SICHUAN PROVINCE. Journal of Geomechanics, 10 (1): 88-96,39.

YAO Hong-xin, LI Wen-sheng, WANG Gen-hou, 2013. OIL AND GAS CHARACTERISTICS OF THRUSTING-NAPPE STRUCTURE BELT IN HUOYANSHAN, XINJIANG. Journal of Geomechanics, 19 (2): 206-213.

Citation:

WANG Shu-bing, Jiang Fu-chu, TIAN Guo-qing, et al., 2004. AGE OF THE JIAWA FORMATION AND ENVIRONMENTAL EVOLUTION OF LITANG COUNTY,SICHUAN PROVINCE. Journal of Geomechanics, 10 (1): 88-96,39.

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AGE OF THE JIAWA FORMATION AND ENVIRONMENTAL EVOLUTION OF LITANG COUNTY,SICHUAN PROVINCE

1. Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing 100081;
2. S tale Key Laboratory of Loess and Quaternary Geology, Chinese Academy of Sciences, Xi'an 710075, Shaanxi;
3. Open Laboratory of Lake Sediment and Environment, Chinese Academy of Sciences, Nanjiang 210008, Jiangsu;
4. Institute of Geography, Planning Commission of Hebei Province, Sijiazhuang 050061, Hebei, China

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Abstract

Abstract

The Jiawa Formation in the Jiawa Basin, Litang County, Sichuan Province, is a sequence of loose fluvio-lacustrine deposits about 300m deep.According to the magnetostratigraphic, the B M boundary is located at 157.0m depth in the middle part of the section and the Olduvai normal polarity chron is recorded at the bottom.According to Cande and Kent's polarity time scale, it can be inferred that the deposition of the Jiawa Formation stared at about 2.10 Ma BP and ended at about 0.10 Ma BP. On the basis of sporopollen analysis, the vegetation changed from subalpine conifer forest to alpine meadow, and the sedimentary environment varied from fluvial-lacustrine facies to alluvial facies.
- Jiawa Formation,
- magnetostratigraphy,
- sporpollen,
- Litang County

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AGE OF THE JIAWA FORMATION AND ENVIRONMENTAL EVOLUTION OF LITANG COUNTY,SICHUAN PROVINCE

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