南沙海区万安盆地中新世碳酸盐台地的地震响应与沉积特征

吕彩丽; 姚永坚; 吴时国; 姚根顺

doi:10.3799/dqkx.2011.098

Volume 36 Issue 5

Sep. 2011

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Article Navigation > Earth Science > 2011 > 36(5): 931-938

LÜ Cai-li, YAO Yong-jian, WU Shi-guo, YAO Gen-shun, 2011. Seismic Responses and Sedimentary Characteristics of the Miocene Wan'an Carbonate Platform in the Southern South China Sea. Earth Science, 36(5): 931-938. doi: 10.3799/dqkx.2011.098

Citation:

LÜ Cai-li, YAO Yong-jian, WU Shi-guo, YAO Gen-shun, 2011. Seismic Responses and Sedimentary Characteristics of the Miocene Wan'an Carbonate Platform in the Southern South China Sea. Earth Science, 36(5): 931-938. doi: 10.3799/dqkx.2011.098

Citation:

LÜ Cai-li, YAO Yong-jian, WU Shi-guo, YAO Gen-shun, 2011. Seismic Responses and Sedimentary Characteristics of the Miocene Wan'an Carbonate Platform in the Southern South China Sea. Earth Science, 36(5): 931-938. doi: 10.3799/dqkx.2011.098

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Seismic Responses and Sedimentary Characteristics of the Miocene Wan'an Carbonate Platform in the Southern South China Sea

doi: 10.3799/dqkx.2011.098

1.
CAS Key Laboratory of Marine Geology & Environment, South China Sea Institute of Oceanology, Qingdao 266071, China
2.
Graduate University of Chinese Academy of Sciences, Beijing 100049, China
3.
Guangzhou Marine Geological Survey, Guangzhou 510760, China
4.
Hangzhou Research Institute of Petroleum Geology, China National Petroleum Corporation, Hangzhou 310023, China

Received Date: 2011-05-06
Publish Date: 2011-09-15

Abstract

Abstract

Based on a large quantity of seismic data interpretation and some drilling data in Wan'an basin, the Miocene Wan'an carbonate platforms are identified from seismic reflection profiles and their sedimentary characteristics as well as spatial and temporal distributions are documented in detail.The Wan'an carbonate platforms developed initially during the Early Miocene and reached its prosperous period during the Middle Miocene, showing north-south orientation, and mainly occurring on the hanging wall of the strike-slip fault block in the centre of the basin and the southern basin margin.The Miocene Wan'an carbonate platform can be divided into the east band and the west band according to two different sedimentary tectonic forming backgrounds, where the west side is the slope dipping towards the east fractured by faults and approaches land-source areas resulting in alternating clastic and carbonate rocks, while the east side is close to the South China Sea basin and far from terrigenous areas showing thick and pure carbonate rocks.The sequence stratigraphic analyses show that the Wan'an carbonate platform exists mainly in transgressive and highstand system tracts.The sedimentary facies of single carbonate platform show ring construction in the plane view, and they are relatively narrow but regular, which may be divided into inner platform facies, fringing platform facies, foreslope facies (ramp and steep slope) and basin floor facies.However, the basin floor facies are found only in the eastern side of carbonate platform which may be related to the geological settings near the South China Sea.
- marine geology,
- carbonate platform,
- sedimentation,
- Wan'an basin,
- South China Sea

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References(22)

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