Maturity and Hydrocarbon Generation Stages of Pretertiary Source Rocks, Taibei Sag, East China Sea Basin
Received date: 2008-07-30
Revised date: 2008-08-26
Online published: 2008-10-10
Based on the reconstruction of thermal history in East China Sea Basin (ECS), the maturity and hydrocarbon generation of the pretertiary source rocks are discussed. The thermal history reconstruction using vitrinite reflectance shows that the Mesozoic source rocks (Cretaceous source rocks) experienced higher paleo heat flow at the end of the Paleocene with a value of 83.4 mW/m2. The thermal history decides the differences of the source rocks evolution before and after the Paleocene. Before the Paleocene, the maturity of source rocks change rapidly. Then, the source rocks mature slowly. The main hydrocarbon generation stage of the Cretaeous source rocks is from the later Cretaeous to the Paleocene. Because of the effects of sedimentation, the source rocks generate hydrocarbon again during the Eocene and the Miocene.
YANG Shu-chun ;PU Xiang-ping ;ZHAO Qun ;SHI Yong-hong . Maturity and Hydrocarbon Generation Stages of Pretertiary Source Rocks, Taibei Sag, East China Sea Basin[J]. Natural Gas Geoscience, 2008 , 19(05) : 673 -679 . DOI: 10.11764/j.issn.1672-1926.2008.05.673
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