东秦岭南部推覆带地质特征及油气地质意义

Geological features of the napped belts of southern margin of Eastern Qinling Mountains and its significance in petroleum geology

分析了东秦岭南部逆冲推覆带构造展布及基本地质特征 ,认为东秦岭南部经过加里东期以来陆间海槽多次启闭与陆陆碰撞、陆内俯冲等岩石圈演变过程 ,形成现今前陆盆地 ,其原型盆地具备成油气地质条件 ,勘探潜力大 .在这一勘探领域开展逆冲、逆掩推覆体的勘探研究工作 ,有望实现前新生代海相地层油气勘探的重大突破 .

The structure spread and basic geological feature of the napped belts of southern margin of Eastern Qinling Mountains has been analyzed in this paper. It is considered that southern margin of Eastern Qinlinge Mountains has undergone series of lithosphere evolutions: several time opening and closing of sea trough between lands, intercontinental collision and intercontinental subduction, and forms nowadays foreland basins. There are advantageous petroleum geological conditions and big exploration potentiality in the proto type basins. It is possible that great breakthrough will be acquired in oil exploration of marine formations of pre Cenozoic Era.