夹皮沟地区成矿规律分析及找矿前景

Metallogenic regularities and exploration prospects in Jiapigou area

夹皮沟地区地处吉林省东南部,是我国比较重要的金成矿带之一。本文介绍了该区的地层、构造、岩浆岩,特别是那些沿着环形构造发育的韧性剪切带与金成矿关系密切。阐述了金矿形成的三个基本条件——太古宇变质岩系、剪切体系的构造破碎蚀变带以及幔源岩浆活动,根据上述条件指出找矿远景区——新立屯—马家店地区和大朝阳沟地区。

The Jiapigou area is located in the southeast of Jilin Province;it is one of the important gold metallogenic belts in China.This paper introduces the formation,structure,magmatite in the area,especially developing the ductile shear belts along ring structure have close relationship with gold mineralization.Three basic conditions for the formation of the gold deposit are elaborated,that is,Archean Eonothem metamorphic rock series,fractured alteration zone in shear system and mantle-derived magmatism,according to the above conditions the prospecting areas are pointed out,according to the above conditions that is,Xinlitun—Majiadian area and Dachaoyanggou area.