摘要
为了更好地研究准噶尔盆地的油气成藏特征,预测下一步油气勘探方向,以盆山耦合关系为研究思路,剖析了该区盆山系统的演化特征、盆山耦合模式及其与油气成藏的关系。结果认为:①达尔布特推覆体和哈拉阿拉特山推覆体是经多期叠加而形成的复杂地质体,构造和断裂发育;而和什托洛盖盆地则是一个在海西期西准噶尔褶皱基底上发育起来、经过多期构造作用而定型的新生代小型山间盆地。②该区盆山耦合模式主要有两种:剖面模式的逆冲双重构造,平面模式的北东向构造带和北西向横断裂。③横向断层转换带、"骨节构造"和第三排构造带具有优越的油气成藏条件,是该区今后油气勘探的重要目标区。
In order to gain insights into the characteristics of hydrocarbon accumulation in the Junggar basin and guide future exploration, this paper analyzes the evolutional features of basin-range system, patterns of basin-range coupling and their relationships with hydrocarbon accumulation in the study area. The following understandings are obtained. ① Darbute nappe and Halaalate mountain nappe are complex geologic bodies formed through multistage superimposition and have well-developed structures and faults. In contrast, the Heshituoluoga basin is a small Cenozoic intermountain basin developed on the western Junggar fold basement during Hercynian and finalized through multistage tectonic activities; ② Two basin-range coupling patterns occur in the study area: vertical thrusting duplex and planar NE-trending structural zone and NW-trending cross faults; ③ Lateral transformation zones of faults, 'joint structures' and the third structural belts have favorable conditions for hydrocarbon accumulation, thus are the major targets for future exploration in the study area.
出处
《天然气工业》
EI
CAS
CSCD
北大核心
2008年第5期10-13,共4页
Natural Gas Industry
基金
中国石油天然气股份有限公司预探项目“准噶尔盆地西北缘精细勘探与有利目标选择”(编号:060108-3)的部分研究成果
关键词
准噶尔盆地
西北
盆地
造山带
构造
断裂
油气藏形成
勘探区
Junggar basin, nvethwest basin, orogenic belt, structure, fault, hydrocarbon accumulation, exploration area
