长江中下游成矿带构造岩浆侵位的接触构造体系与成矿

本文是在中国南部古大陆边缘构造带扬子边缘构造区探讨长江中下游成矿带构造岩浆侵位的不同接触构造体系与成矿.构造岩浆侵位有三步曲,一是地球深部构造岩浆的形成；二是构造岩浆侵位的动力作用；三是在表壳与围岩形成不同侵位接触构造样式的成矿场地.最后,作者例举大冶铁矿和铜陵铜矿两成矿区的构造岩浆主动侵位形成顶沉构造(rooffou...

METALLOGENY OF THE TECTONOMAGMATIC EMPLACING CONTACT STRCTURAL SYSTEMS OF THE METALLOGENIC BELT IN MIDDLE AND LOWER REACHES OF YANGTZE

With discussion on the different contact structural systems of tectonomagmatic emplacement,the metallogeny in the Middle and Lower Reaches of Yangtze is studied.This metallogenic province belongs to the Yangtze marginal tectonic region of South China ancient continental marginal tectonic belt.The tectonomagmatic emplacement is in three steps: 1) forming of the tectonomagma in the deep of crust;2) dynamic process for the initiative emplacement of magma;and 3) forming of metallogenic sites with different types of emplacing contact structural systems in supracrust of the earth.With two examples of Daye iron deposit and Tongling copper deposit,the authors introduce the roof-foundering contact structure system,which is formed by the initiative tectonomagmatic emplacement,and roof-pendent emplaced above the country rock to form the hinged ore-controlling structures in different depths.The concept of tectonomagmatic emplacing contact structure is a new understanding for the prospecting idea of "digging deeper".