摘要
安徽宣城地区昆山铜多金属矿化区位于扬子准地台、下扬子台坳南部边缘。该矿化区的赋矿地层为区域内易于成矿的二叠—三叠系沉积岩,断裂构造为岩浆及矿物质的运移提供了良好的通道,中酸性岩浆的侵入过程中切割、包裹沿途围岩,并与之发生强烈的同化混染、交代作用,实现物质成分的充分交换,为该区易于发生成矿作用的有利条件。物探资料显示研究区存在矿致异常的航磁和重力的分布特征。地质和地球物理特征均指示昆山—狮子山一带是寻找接触带矽卡岩型和层控式矽卡岩型铜矿床的有利地带,具有较好的找矿前景。
The Kunshan Cu-polymetallic mineralization district is located in the south margin area of sub-Yangzi depressed terrane in Xuancheng area, Anhui Province. The Permian-Triassic sedimentary strata are prone to mineralization in this area. The widely distributed faults give favorable channels for the granitoid magmas and hydrothermal fluids. The intermediate-acid magmas cut and enwrap the surrounding rocks and assimilation, contact and metasomatism take place in them during the evolution of the magmas, which becomes the favora- ble condition of mineralization in the area. Geophysical data further indicate that the magnetic and gravitation- al abnormalities are probably caused by the mineralization. It is suggested that the Kunshan-Shizishan area has high potentials in exploring the contact and Strata-bound skarn Cu deposits according to its geological and geo- physical characters.
出处
《合肥工业大学学报（自然科学版）》
CAS
CSCD
北大核心
2013年第2期217-223,共7页
Journal of Hefei University of Technology：Natural Science
关键词
断裂构造
辉石闪长岩
矽卡岩型
层控型
昆山铜多金属矿化区
宣城地区
fault structure
pyroxene diorite
skarn-type
stratum-type
Kunshan Cu-polymetallicmineralization district
Xuancheng area
