桃村拆离断层及其与金矿成矿作用的探讨

本文运用伸展构造理论,通过野外实地观察结合遥感影像判读和室内综合研究,提出了桃村断裂为一条拆离断层。并进一步剖析了与其伴生的变质核杂岩的构造特点;分析了拆离断层和变质核杂岩的影像特点;探索了它与该区成矿作用的关系。这对认识我国东部普遍存在的先压后张断层的成因和演化,了解我国东部与铀矿及其它矿产有关的区域拉张构造背景的关系,开拓新的找矿思路是有启迪的。

DISCUSSION ON TAOCUN DENUDATIONAL FAULT AND GOLD METALLOGENESIS

The extensional tectonic theory is applied in this paper to present that the Taocun fault is a denudational one through on-the-spot observation in combination with the image interpretation of remote sensing and indoor comprehensive study and the structural features of the metamorphic core complex associated with the denudational fault has been studied. Features of images for the denudational fault and metamorphic core complex are analysed and the relation between the fault and metallogenesis in this area has been explored. It is helpful to recognize the genesis and evolution of previous compressive and later tensional faults which are widespread in the eastern part of China, to understand the setting of regional compressive and tensional tectonics associated with uranium and other mineral resources in the eastern part of China, and to develop the new idea of prospecting.