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Sedimentary Characteristics for the Cretaceous Strata in the Northern Depression of the South Yellow Sea Basin

QU Xi-yu¹, LIU Li¹, CHEN Jian-wen^2,3, LI Gang²

1.College of Earth Sciences，Jilin University, Changchun 130061, China; 2. Qingdao Institute of Marine Geology, Qingdao 266071, China; 3.Ocean University of China, Qingdao 266003, China

Received:2004-09-14 Revised:1900-01-01 Online:2005-07-26 Published:2005-07-26
Contact: QU Xi-yu

Abstract

Abstract: A comparison research on the latest drilling and seismic data indicates that the Cretaceous sedimentary characteristics of the Northern depression in the South Yellow Sea basin are characterized by a gradual enlargement of the depression from early to middle Cretaceous and a progressing shrinkage during Early Cretaceous. This shows that the water level in the Northern depression of the South Yellow Sea basin during the Cretaceous period experienced a rise and fall process. And the cretaceous lake deposit is widely distributed. The remained Cretaceous deposit in the whole region is 39 675 km2 in area, with a maximum thickness of 5 200 m, hence presenting good conditions for the generation and transformation of organic matter and indicating a better oil and gas potential in this region.

Key words: the Northern of South Yellow Sea, Cretaceous strata, sedimentary characteristics, oil and gas prospect

CLC Number:

P618.13

QU Xi-yu, LIU Li, CHEN Jian-wen, LI Gang. Sedimentary Characteristics for the Cretaceous Strata in the Northern Depression of the South Yellow Sea Basin[J].J4, 2005, 35(04): 443-0448.

References

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