东坪金矿是我国首次在碱性岩体中发现的新类型金矿，1992年被中国地质学会命名为“东坪式”金矿，该金矿处于华北地台北缘，燕山台褶带与内蒙古地轴交界部位的南侧，北距尚义-崇礼-赤城深大断裂约8km。以前述的深大断裂为界，南为中太古界崇礼群，北为古元古界红旗营子群。崇礼群为一套角闪岩相—麻粒岩相；红旗营子群则由角闪斜长片麻岩、变粒岩夹大理岩组成。
Dongping gold deposit is firstly found in alkaline rock in China's new type of gold deposits, 1992 was the Geological Society of China named "Dongping type gold deposit and the gold deposit in the north margin of the North China platform, at the junction of the Yanshan platform fold belt and Inner Mongolia axis on the south side of the North from Shangyi Chongli - Chicheng deep large fault about 8km. With the deep fault as the boundary, South to the north in the Archean Chongli group, as the Paleoproterozoic HONGQIYINGZI group. Chongli group is a set of amphibolite - granulite facies; HONGQIYINGZI group is the flash plagiogneiss, granulite rocks interbedded with marble.
|
