幕阜山-九岭隆起侧缘逆冲推覆和滑动拆离以及山体的不对称性

由元古界组成的幕阜山—九岭隆起,横亘于萍乐坳陷与江汉坳陷之间。隆起南侧发育了一套向南逆冲于萍乐坳陷的逆冲推覆构造,北侧发育了一套向北滑向江汉坳陷的重力滑动拆离构造。两种构造系的结构和性质迥异,构成了幕阜山-九岭山体的不对称构造。两套构造统一形成于燕山期,是在不均一侧压下引起的隆起中,南侧发生逆冲、北侧发生滑动拆离的结果。

ON THRUST-NAPPE AND GLIDING-DETACHMENT ON BOTH SIDES OF MUFUSHAN-JIULING UPLIFT AND ASYMMETRICAL TECTONIC ARCHITECTURE OF MOUNTAIN

The Mufushan-Jiuling is situated on the central section of the Jiangnan Paleo-axis, consisting of Proterozoic. On the south side is the Pinglc trough, and on the north side is the Jianghan trough. On the south side of this anticlinoriurn occurred a thrust-nappe systems which thrusts from north to south, directed toward the pingle trough. On the north side occurred a gravitational gliding-detachment system, which slides from south to north, directed toward the Jianghan trough. In structure and mechanism both systems arc different from each other, but they occurred during the same tectonic phase, the Yanshanian. Two systems construct an asymmetrical tectonic architecture of the Mufushan Jiuling, and respond to the regional inhomogeneous horizontal eomprosion, uplifting, extension and gravitational gliding.