NEWLY ACQUIRED DEEP SEISMIC REFLECTION SIGNALS IN THE AREA NEAR THE QIANLIYAN FRACTURE OF THE SOUTH YELLOW SEA AND ITS GEOLOGICAL SIGNIFICANCE

WU Zhiqiang; YANG Yanqiu; SHI Jian

doi:10.3724/SP.J.1140.2012.06173

2012 Vol. 32, No. 6

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WU Zhiqiang, YANG Yanqiu, SHI Jian. NEWLY ACQUIRED DEEP SEISMIC REFLECTION SIGNALS IN THE AREA NEAR THE QIANLIYAN FRACTURE OF THE SOUTH YELLOW SEA AND ITS GEOLOGICAL SIGNIFICANCE[J]. Marine Geology & Quaternary Geology, 2012, 32(6): 173-178. doi: 10.3724/SP.J.1140.2012.06173

Citation:

WU Zhiqiang, YANG Yanqiu, SHI Jian. NEWLY ACQUIRED DEEP SEISMIC REFLECTION SIGNALS IN THE AREA NEAR THE QIANLIYAN FRACTURE OF THE SOUTH YELLOW SEA AND ITS GEOLOGICAL SIGNIFICANCE[J]. Marine Geology & Quaternary Geology, 2012, 32(6): 173-178. doi: 10.3724/SP.J.1140.2012.06173

NEWLY ACQUIRED DEEP SEISMIC REFLECTION SIGNALS IN THE AREA NEAR THE QIANLIYAN FRACTURE OF THE SOUTH YELLOW SEA AND ITS GEOLOGICAL SIGNIFICANCE

1 Key Laboratory of Marine Hydrocarbon Resources and Environmental Geology, Ministry of Land and Resources, Qingdao 266071, China;
2 Qingdao Institute of Marine Geology, Qingdao 266071, China

Received Date: 11 November 2011

Revised Date: 07 March 2012

Abstract

Abstract

The Qianliyan fracture, located in the south of the Qianliyan uplift, is the boundary fault between the north depression and the Qianliyan uplift as a major fault controlling the formation and evolution of the north depression of the South Yellow Sea Basin.Due to the poor quality of seismic data,the deep formation attribute and distribution around the fracture have so far remained in argument.With the improvement of seismic acquisition and processing technology aiming at deep exploration target in recent years,we have found layered. Strata under the metamorphic sequence on both sides of the Qianliyan fracture.Based on the seismic stacking velocity,analysis of reflection characteristics,joint inversion of gravity,magnetic and seismic data,as well as regional geological comparison,the layered formation is interpreted as the Paleozoic marine carbonate and clastic deposits similar to the Paleozoic formation in the Lower Yangtze region.The discovery is significant to the further understanding of regional geological characteristics of the South Yellow Sea Basin.
- Qianliyan fracture /
- deep formation /
- seismic reflection

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