华北地块含金碱性岩浆源区及其物质来源研究  

The gold-bearing alkali magmatic rock source area in North China massif and study on its origin of materials

作　　者：张宇辉[1] 

机构地区：[1]武警黄金地质研究所

出　　处：《黄金》2002年第1期4-9,共6页Gold

摘　　要：研究表明 ,华北地块含金碱性岩浆岩 (脉 )主体来源于幔壳混源区 ,原始物质为板内碱性玄武岩 ;成岩环境主体以张裂性为主 ,兼有挤压性 ;成岩时地壳厚度主体 >30km ,本文认为在 30～ 4 0km深度上存在一个固相、液相并存的幔壳混源带。并由其产生含金成矿流体 ,它是成矿的主要物质基础 ,致使此类金矿床具有富Te。It showed from study that the main part of the gold bearing alkali magmatic rock in North China mass if were from the mixed source area of crust and mantle;the source materials were alkali basalt in the plate;the environment of rock forming was mainly tensile crack and part of extrusion;and the thickness of the main body of the crust when forming rock was greater than 30km.In this paper,it was believed that at the depth of 30～40km,there was a minxed source area of crust and mantle where the solid phase and liquid phase coexisted,thus the gold bearing mineralized fluids produced which shaped the main basic materials of mineralization.This sort gold deposit were characterizd by Te rich and great time difference between rock forming and mineralization.

关 键 词：华北地块 含金碱性岩 源区 其物质来源 金矿床 

分 类 号：P618.51[天文地球—矿床学]