内蒙古北山北带铜多金属成矿地质特征及成矿规律分析

Analysis on the Mineralizing Regularities and the Minerogenetic Conditions of Cu Multi-metal Mining Area in the Northern Belt of Beishan in Inner Mongolia

内蒙古北山北带是指位于红石山——黑鹰山——六驼山深大断裂带北侧至中蒙边界之间的地带,大地构造处于塔里木——哈萨克斯坦联合板块北部活动陆缘增生带。该区主要出露有古生代火山岩地层和晚古生代岩浆岩,岩浆活动频繁,构造发展史十分复杂,海陆相火山喷发—沉积建造发育,金属矿床(点)星罗棋布,成矿地质条件十分有利,是我国最重要的金属矿成矿远景区之一。本文在研究前人工作成果的基础上,结合内蒙古地质调查院近几年在该区所做的工作和取得的成果资料,较全面地介绍了研究区的区域成矿地质背景、区域地球物理、区域地球化学及区域矿产时空分布等特征。初步总结了该区的一些成矿规律、控矿因素和找矿标志,认为该区具有极为有利的铜多金属成矿地质条件和良好的找矿前景。

The Northern belt of Beishan in Inner Mongolia is located in a region between the northern side of the deep fracture belt of Hongshishan, Heiyingshan,Liutuoshan mountains and the boundary area of China and Mongolia of Republic. Its tectonics is located in the marginal accreting plate of the northern part of the united plate of Talimu and Kazakhstan. In this region, it mainly exposes the volcano strata formed in Paleozoic era and the magma rocks in late Paleozoic era; magma flows frequently; and its tectonic development history is quite complicated; marine and continental volcano erupted and sedimentary formation developed; the metal mineral deposit scatters all over the place. All of these are quite beneficial for mineralization and it is one of the most important prospective metal mineralization areas. On the basis of the achievements by the former researchers and the achievement material by Inner Mongolia Geological Investigation Institute in recent years, this thesis comprehensively introduces the characteristics such as the regional minerogenetic geological background, the regional geophysical and geo- chemical conditions and the space- time distribution of regional mineral products in the researching spots and preliminarily summarizes some mineralizing regularities, ore- controlling elements, indicators for deposit and thinks that the Cu multi- metal minerogenetic conditions in the region are quite advantageous and it has a very bright prospective.