Abstract: The paper discusses the faults systems, types of the structural traps, distrifutions of the strata and their relationships, kinds of the sandy bodies as well as the basementrocks within the half-graben systems in Eastern China. And it further discusses the petroleum geology and the types of the oil-deposits of the Deep-subsidence zones within tertiary half-groben systems. In the paper, Author states that the zones are favourable areas for hydrocarbon generation and accumulation and that the types of oildeposits, degrees of hydrocarbon accumulation and their distributions are related to the kinds of the depressions and the positions of the reginal structures and the geologeical levels.

摘要： 本文主要从断裂系统、构造圈闭类型、地层分布、接触关系、砂体类型及基岩等六个方面阐述了我国东部第三系箕状断陷深陷带的石油地质特征及油气藏类型。论述了深陷带不仅是生油区,而且是储油区,而油气藏类型、富集程度及分布规律,主要马凹陷类型、区域构造位置和地质层位有关。