广东三水残留盆地特征及油气地质条件

The Features of the Sanshui Relict Basin and Its Conditions of Petroleum Geology,Guangdong Province

三水盆地是发育在华南微板块上的一个白垩纪～早第三纪断坳盆地，是广东珠江三角洲地区中新生代残留盆地群中的一个典型代表，盆地内部的构造变形，以张性正断层为主，断裂数量多但规模小，它们决定了盆地构造变形样式的基本特征，对沉积的控制却不明显。本文通过分析三水盆地构造变形型式、地层发育及保留特征、生油岩演化程度，结合三水盆地沉积环境和沉积相研究成果，并通过与相邻沉积盆地的对比研究，重点对三水盆地构造属性和地球动力学背景、盆地的残留性质及特征、盆地的发育演化、盆地基本变形样式及圈闭发育规律等问题，提出我们的看法。

The sanshui basin,formed in the Huanan incro plate uting Cretaceous and Paleogene,is a typical one of Mezo Cnozoic relict basins in the Pearl River Delta area,Guangdong Province.The major structural deformation in the basin is characterized by a number of small scale extensional faults which are mainly postdepositional.In this paper,the evolution of the Sanshui basin and its relict fertures,its deformation styles and trap patterns as well as the perspect of petroleum exploration in this type of basins are discussed based on analyses of structures,strata,depositional envitonments and facies and the maturity of source rocks as well as the comparison of strata between the Sanshui basin and its neighbouring area.