新疆三塘湖盆地构造演化及油气勘查方向

三塘湖盆地是中、新生代陆相山间盆地，经历了晚二叠世盆地形成阶段、中生代盆地发展早期阶段及新生代盆地发展晚期阶段；并在成盆初期及盆地发展早期发育三套生油岩系，构成了盆地烃源岩。盆地主要受控于燕山期断裂活动，控制了凹陷、凸起形态及规模，奠定了局部构造的雏形。受燕山—喜马拉雅期断裂活动的影响，形成了位于盆地中央坳陷带内的背斜、断块背斜构造。盆地中西部油气前景最好，是今后油气勘查的主要地区。

TECTONIC EVOLUTION AND OIL-GAS EXPLORATION TARGET IN SANTANGHU BASIN OF XINJIANG

Santanghu basin is a Meso-Cenozoic continental intramoutain basin,which underwent earlier formation stage at late Permian,earlier development stage at Mesozoic and later development stage at Cenozoic. At the erlier formation stage and earlier development stage formed three groups of oil source rocks which led to the generation of hydrocarbon source rocks. Santanghu basin is mainly controlled by Yanshanian fractures which confine tile shape and scale of depression and arching,and outline the embryonic form of local structures. The Yanshanian - Himalayan fractures form the anticlines, faulted anticlines at depression centre of the basin, The middle and westerm part of the basin is a major prospect area for the future oil-gas prospecting.