扎日加变质核杂岩的确定及地质意义

刊出日期: 2012-03-15

Redefinition and Geological Significance of Metamorphic Core Complex of Zarijia Area

Publish Date: 15 March 2012

摘要: 产于北巴颜喀拉山扎日加地区的变质核杂岩具有典型的二层结构。由构造片岩、构造片麻岩、千枚岩等组成穹状背斜核,其中心为燕山期二长花岗岩体,盖层为巴颜喀拉山群浅变质砂板岩。核部与盖层之间为剥离断层。它的厘定表明巴颜喀拉沉积盆地下面存在中元古界的古老基底,并对大场金矿的成因类型提出了新的认识。
- 扎日加 /
- 变质核杂岩 /
- 剥离断层 /
- 二层结构
Abstract: Zarijia metamorphic core complex in the northern part of Bayankala Mountain has the typical double-layer structure.The dome anticline of the Zarijia metamorphic core complex consists of tectonic schist,tectonic gneiss and phyllite and the middle of the core is Yanshanian monzonitic granite.The cover layer consists of the low metamorphic sand-slate.There are stripping faults between the core part and the cover layer,showing that there exists Mesoproterozoic basement below the Bayankala sedimentary basin,and providing a new genetic type for the Dachang gold mine.
- Zarijia /
- metamorphic core complex /
- detachment fault /
- doubel-layer structure