东海盆地西湖凹陷不整合面剥蚀厚度及埋藏史研究

Denudation Thickness and Burial History of Unconformity Surface in Xihu Depression,East China Sea Basin

剥蚀厚度恢复研究,采用了声波时差法和镜质体反射率法两种方法,共恢复了西湖凹陷8口井在三个主要剥蚀面上的剥蚀量,发现三个不整合面的剥蚀厚度均在0~1300m之间,但主要集中在500m以下。恢复了西湖凹陷不同次级构造单元的埋藏史,可以看出,中央反转构造带剥蚀量最大。龙井运动造成的剥蚀最大,花港运动次之,玉泉运动最小。

This paper researchs 3 unconformities'erosion amounts in 8 wells The Xihu depression of The Xihu depression by sonic velocity and vitrinite reflectance data.It shows that 3 unconformities'erosion amounts is 0~1300m, and mainly under 500m. This paper also recovers theburial history of depression, and the erosion amounts of central overturned structural belt is the most.The erosion amounts of Longjing structural movement is the most, and that of The Huagang structural movement is much less, Yuquan structural movement is the least.