南海西北次海盆及其邻区的地热流特征与研究

徐行; 王先庆; 彭登; 姚永坚; 姚伯初; 万志峰

doi:10.3799/dqkx.2017.606

Volume 43 Issue 10

Oct. 2018

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Article Navigation > Earth Science > 2018 > 43(10): 3391-3398

Xu Xing, Wang Xianqing, Peng Deng, Yao Yongjian, Yao Bochu, Wan Zhifeng, 2018. Characteristics and Research of Heat Flow in the Northwest Sub-Basin and Its Adjacent Areas of the South China Sea. Earth Science, 43(10): 3391-3398. doi: 10.3799/dqkx.2017.606

Citation:

Xu Xing, Wang Xianqing, Peng Deng, Yao Yongjian, Yao Bochu, Wan Zhifeng, 2018. Characteristics and Research of Heat Flow in the Northwest Sub-Basin and Its Adjacent Areas of the South China Sea. Earth Science, 43(10): 3391-3398. doi: 10.3799/dqkx.2017.606

Citation:

Xu Xing, Wang Xianqing, Peng Deng, Yao Yongjian, Yao Bochu, Wan Zhifeng, 2018. Characteristics and Research of Heat Flow in the Northwest Sub-Basin and Its Adjacent Areas of the South China Sea. Earth Science, 43(10): 3391-3398. doi: 10.3799/dqkx.2017.606

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Characteristics and Research of Heat Flow in the Northwest Sub-Basin and Its Adjacent Areas of the South China Sea

doi: 10.3799/dqkx.2017.606

1.
MLR Key Laboratory of Marine Mineral Resources, Guangzhou Marine Geological Survey, Guangzhou 510075, China
2.
School of Marine Sciences, Sun Yat-sen University, Guangzhou 510275, China

Received Date: 2017-05-25
Publish Date: 2018-10-20

Abstract

Abstract

The Northwest sub-basin (NW sub-basin) is an important tectonic unit in the South China Sea. It is of great importance to reveal the geothermal characteristics of the NW sub-basin for the better understanding of thermal and thermal structures of the basins of South China Sea. We have collected a series of measured heat flow data along the OBS2006-1 seismic profile. This heat flow profile crosses four tectonic units, including the northern slope of the South China Sea, the NW sub-basin, the Zhongsha rise and the east sub-basin. With the seismic interpretation profile, this paper analyzes and studies in detail the heat flow characteristics. The results show that the average heat flow value is 104.5±9.9 mW/m² in the NW sub-basin, and the average heat flow value in the northern part of the East sub-basin is 97±2.5 mW/m², the change trend of the heat flow values is similar to that of the Moho depth, which manifests that the deep thermal state is controlled by the source of mantle heat. By studying the anomalies of heat flow, it is found that the temperature difference between the seabed surface sediments in adjacent sites is one of the basis for judging the degree and type of groundwater thermal cycling. With the latest ocean heat flow detection results, combined with regional geology and geophysical data, it is suggested that the formation of the NW sub-basin is similar to that of the Southwest sub-basin, but with relatively shorter history.
- Northwest sub-basin,
- heat flow,
- oceanic crust,
- age,
- geophysics

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References(39)

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Characteristics and Research of Heat Flow in the Northwest Sub-Basin and Its Adjacent Areas of the South China Sea

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