江南地穹系大地构造若干特征及其归属研究——以赣北皖南为例

RESEARCH ON SOME GEOTECTONIC CHARIACTERSTICS AND BELONGINGNESS OF JIANGNAN GEODOME SYSTEM——TAKING NORTH-JIANGXI AND SOUTH-ANHUI,CHINA,AS AN EXAMPLE

本文以赣北皖南为例,论述了江南地穹系的沉积建造、岩浆建造.变质建造及构造型相等若干大地构造特征;通过与皖西北、皖中及赣中南诸种大地构造特征的对比研究.确认其归属于华中地洼区;进而在赣皖两省内将华中地洼区(Ⅰ级)划分出3个Ⅱ级构造区。5个Ⅲ级构造区和24个Ⅳ级构造区.以上研究成果使赣皖两省大地构造研究更加深入和完善,并为整个华中地洼区与东南地洼区的界线划分提供了新的科学依据.

Taking North-Jiangxi and South-Anhui as an example, this paper demonstrates some geotectonic characteristics such as sedimentary, magmatic, and metamorphic formations and structural feature of Jiangnan Geodome System. Through the comparison of the geotectonic characteristics of Jiangnan Geodome System with those of Northwest Anhui, Central Anhui and Central-South Jiangxi, it is confirmed that Jiangnan Geodome System belongs to Central China diwa region. Therefore, the part of Central China diwa region (first order tectonic region) in Jiangxi and Anhui provinces can be divided into three second-order, five third-order and twenty four-order tectonic regions. The results obtained make the geotectonic study about Jiangxi and Anhui provinces more perfect and provide the new scientific basis for marking the boundary between the Central China and Southeast China diwa regions.