An origin discussion of mound-shaped reflections in Miocene, southern Qiongdongnan Basin

ZHAO Tianliang; PU Renhai; QU Hongjun; ZHANG Gongcheng; LIANG Jianshe; FENG Yangwei

doi:10.3969/j.issn.0253-4193.2013.04.014

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ZHAO Tianliang, PU Renhai, QU Hongjun, ZHANG Gongcheng, LIANG Jianshe, FENG Yangwei. An origin discussion of mound-shaped reflections in Miocene, southern Qiongdongnan Basin[J]. Haiyang Xuebao, 2013, 35(4): 112-120. doi: 10.3969/j.issn.0253-4193.2013.04.014

Citation:

ZHAO Tianliang, PU Renhai, QU Hongjun, ZHANG Gongcheng, LIANG Jianshe, FENG Yangwei. An origin discussion of mound-shaped reflections in Miocene, southern Qiongdongnan Basin[J]. Haiyang Xuebao, 2013, 35(4): 112-120. doi: 10.3969/j.issn.0253-4193.2013.04.014

Citation:

ZHAO Tianliang, PU Renhai, QU Hongjun, ZHANG Gongcheng, LIANG Jianshe, FENG Yangwei. An origin discussion of mound-shaped reflections in Miocene, southern Qiongdongnan Basin[J]. Haiyang Xuebao, 2013, 35(4): 112-120. doi: 10.3969/j.issn.0253-4193.2013.04.014

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An origin discussion of mound-shaped reflections in Miocene, southern Qiongdongnan Basin

doi: 10.3969/j.issn.0253-4193.2013.04.014

1.
Department of Geology, Northwest University, Xi'an 710069, China
2.
Exploration Institute of China National Offshore Oil Corporation Research Center, Beijing 100027, China

Received Date: 2012-07-27
Rev Recd Date: 2013-01-31

Abstract

Abstract

Mound-shaped reflections of Miocene Meishan formation are widely developed in southern Qiongdongnan Basin. Their identification and analysis are of important significance both for sedimentology research and hydrocarbon exploration. They are mainly located in the Beijiao depression and its surrounding slopes, with high amplitudes on top and bottom interfaces and weak reflections in its interior. Sometimes lateral drape reflections exist on the mound top and mounds migrate in a way of growth from structural depression toward higher slopes. In addition of the comprehensive analysis of the palaeotectonic and paleogeographic background, geometry and distribution and impedance of mound-shaped reflections suggest that they should not probably originated by reef or/and mud diapirs and volcanoes. Instead they may be contour currents deposits or some kind of sediment wave formed under the bottom currents in deep-water environment.
- mound-shaped reflections,
- seismic reflection characteristics,
- Miocene,
- Qiongdongnan Basin,
- deep-water region of northern South China Sea

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References(28)

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