地质与勘探2011，Vol.47Issue(2)：151-162,12.
大兴安岭地区铜钼矿床成矿区带背景及找矿前景分析
Analysis of Geological background and Ore-Searching Prospect for the Copper-Molybdenum Deposits in the Da Hingan Ling Area
摘要
Abstract
Based on regional tectonic setting and distribution of the known copper-molybdenum deposits, the Da Hingan area is divided into four mineralization belts:the Xilamulun river molybdenum polymetallic mineralization belt, the southern Da Hingan Ling Cu-Mo mineralization belt, the northern Da Hingan Ling Cu-Mo mineralization belt and the Ergun Cu-Mo metallogenetical belt. We classify these deposits into three major genetic types:porphyry, hydrothermal vein and skam type, and describe several newly discovered deposits as typical examples. The time and space distribution of Cu-Mo deposits in the area are summerized. And on the basis of times of deposits, our discussion is focused on the possible tectonic settings of the Da Hingan Ling Cu-Mo deposits,which are related to the following tectonic stages:post-collision between the Siberian plate and Mongolia-Ergun platform(＞480Ma) ,post -collision between the Siberian plate and North China plate( 250-240Ma), southward subduction of the Mongolia-Okhotsk ocean and post-collision after its close ( 180-145 Ma), tectonic extension caused by subduction of the Pacific plate since the early Cretaceous ( ＜ 145 Ma ). Finally, a comprehensive assessment of the prospecting potential in this region was made. The potential deposits are porphyry Mo deposits of Yanshanian and Indosinian in the Xilamulun fiver molybdenum metallogenetical belt, hydrothennal vein and porphyry Cu(Mo) deposits of Yanshanian in the southern Da Hingan range Cu-Mo metallogenetical belt, the Early Paleozoic porphyry Cu and Mesozoic porphyry and skarn type Cu deposits in the northern Da Hingan range Cu-Mo metallogenetical belt, and porphyry Cu-Mo deposits related with Mesozoic hypabyssal porphyry in the Ergun Cu-Mo metallogenetical belt.关键词
铜钼矿床/成岩成矿时限/构造背景/找矿前景/大兴安岭Key words
Copper-molybdenum deposits, diagenesis-mineralization timing, tectonic setting, ore-searching prospect, Da Hingan Ling area分类
天文与地球科学引用本文复制引用
贾盼盼,魏俊浩,巩庆伟,赵万莉..大兴安岭地区铜钼矿床成矿区带背景及找矿前景分析[J].地质与勘探,2011,47(2):151-162,12.基金项目
国家危机矿山项目(编号:2006020035和2007020047)资助. （编号:2006020035和2007020047）
