塔里木盆地东北地区构造演化与油气探讨

塔里木盆地东北地区,指自东向西的库鲁克塔格隆起、塔北隆起和柯坪隆起组成的塔北台隆带。塔北隆起是本文讨论的重点,它经历了前震旦纪地槽发展阶段、晚元古—早古生代晚期地台发展、解体阶段至晚古生代槽、台发展阶段和中一新生代盆、山发展阶段,其间发生了10余次构造运动,造成层系间各种类型的不整合、风化壳等接触关系。该区存在寒武—奥陶、石炭—二叠和三叠—侏罗多套生油岩系及成油组合,满加尔—带为理想的油源区,区內多次构造活动为塔北隆起带油气聚集创造了良好条件。

STRUCTURAL EVOLUTION AND HYDROCARBON CONSIDERATION OF NORTHEAST TARIM BASIN

Northeast Tarim Basin means the Tabei platform - uplift belt which consists of Kuluketage uplift, Tabei uplift and Keping uplift from east to west. This paper mainly discussed the Tabei uplift. It underwent pre - sinian period of geosynclinic development , development and disintegration of platform from upper Proterozoic to later period of lower Palaeozoic, development of geosyrtcline and platform in upperpalaeozoic and development of basin and mountain from Mesozoic to Cenozoic. More than ten times of structural movement had happened among these Periods of geological time and formed various types of unconformity, weathering zone and other contact relationship between different layers. It exists many suite of source rock and hydrocarbon-generating association among Cambrian to Ordovician，carboniferous to Permian and Triassic to Jurassic Period. The ideal source area is around Manjiaer and the multistructural movements created a good condition for hydrocarbon accumulation in Tabei uplift.