我国中西部中新生界前陆盆地沉积演化与充填模式  

SEDIMENTATION EVOLUTION AND FILLING MODEL OF MESO-CENOZOIC FORELAND BASIN IN CENTRAL AND WEST CHINA

作　　者：杨晓萍 顾家裕 贾进华 张宝民 

机构地区：[1]中油勘探开发研究院

出　　处：《天然气勘探与开发》2005年第1期1-4,共4页Natural Gas Exploration and Development

摘　　要：我国中西部发育大量中新生代前陆盆地, 它们多数都属于特提斯碰撞造山带后缘部分上的类前陆盆地。根据它们的沉积建造特征可将其分为 5个演化阶段, 其中T3 -J1一2时期主要形成河湖、沼泽含煤沉积建造, 是整个中西部地区烃源岩的主要形成期; J3 -K1时期为氧化宽浅湖与红色磨拉石建造期, 是中西部地区有利储集层的发育时期; K2 -E时期在整个中西部地区形成的红色含膏盐砂泥岩建造期, 是区域性盖层的发育期。另外, 根据中西部中新生代各个盆地沉积演化特征, 将其归纳为 3种类型充填模式。A large number of Meso-Cenozoic foreland basins are growing in central and west China. Most of them all belong to quasi-foreland basins on the back fringe of Tethysian colliding orogenic belts. Based on the characteristics of their sedimentation formations, they may be divided into 5 evolution stages, in which T 3—J 1-2 period, chiefly forming coal-bearing sedimentary formation of fluvial lake and marsh is the main stage of forming whole central and west China hydrocarbon source rocks; J 3—K 1, the stage of forming oxidized broad and shallow lake and red Molasse formation is that of beneficial reservoirs growing in central and west China; K 2—E, the stage of forming red gypsalt-bearing sand- and mud-stone formations in the whole central and west region is that of regional cap rock growing. In addition, on the basis of sedimentary evolution characteristics of various Meso-Cenozoic basins in central and west region, 3 types of models may be concluded.

关 键 词：充填模式 沉积演化 中新生界 中西部地区 中新生代 类前陆盆地 区域性盖层 碰撞造山带 磨拉石建造 沉积建造 发育时期 演化阶段 建造特征 演化特征 盆地沉积 发育期 砂泥岩 储集层 形成期 特提斯 烃源岩 红色 含煤 膏盐 

分 类 号：P544.4[天文地球—构造地质学]