摘要
目的：探讨中国东部下第三系盐岩沉积的成因。方法：归纳总结东濮凹陷下第三系盐岩沉积的古生物种群演化、构造发育史、岩性沉积速率、古地形等资料。结果：东濮凹陷沙河街组盐岩主要来源于海水的侵入，属于陆相盆地的事件性沉积。处于盐湖沉积中心的砂体厚度薄，展布范围小，处于不利的沉积相带。而处于环湖沉积的砂泥岩是寻找岩性油气藏有利地带。结论：渤海湾各个近海湖泊能否成盐完全与当地湖盆主控断层沉降幅度有直接关系。
It is the focus of stratigraphy that genetic Paleogene salt bed sedimentation is studied in east China According to the study of paleospecies evolution, structural history, sedimentation velocity, paleotopography and the case of salt rhythm,salt sedimentary of Shahejie formation caused by transgression in Dongpu depression is an affair of sedimentary of continental basin. The sand body in sedimentary center is thin, and its range is small, where sedimentary environment is disadvantage. Nevertheless sand-shale of ring sedimentary belt in salt lake has good reservior characteristics which is lithology hydrocarbon reservior. It can be concluded that whether every basin adacent sea that have salt sedimentary completely or not in BoHai bay is closely related to subsidence magnitude of growth fault in basin.
出处
《断块油气田》
CAS
1998年第5期18-22,共5页
Fault-Block Oil & Gas Field
