摘要
在综合分析凤-太矿集区成矿构造特征的基础上，依据以往总结的凤．太矿田铅锌、金矿聚矿构造模式，通过对八方山-二里河铅锌矿床地质特征的分析，总结了找矿标志，初步认为八方山-二里河（铜）铅锌矿床的成矿模式为：“前泥盆纪海底热水喷流沉积一印支-燕山期构造改造型”铅锌矿床。认为成矿物质来源于基底，后期的构造-岩浆改造使基底成矿元素活化，沿同生断裂迁移、改造，最后在泥盆系中形成的扩容性构造部位富集成矿。提出了下一步扩大找矿的方向和建议。
According to the previous tectonic model of mineral aggregation for Pb, Zn and Au deposits in the Feng-Tai ore field, on the basis of analyzing geological characteristics of the Bafangshan and Erlihe Pb- Zn deposits, this paper determines indications for prospecting and preliminarily suggests that the mineralization model for the Bafangshan and Erlihe Pb Zn-（Cu） deposit belong to the type of hydrothermal exhalative deposit of pre-Devonian sea floor and Indosinian-Yanshan tectonic modification. It is thought that metallogenic substance was derived from basement, subsequent tectonic-magmatic modification activated the metallogenic elements, which migrated and experienced alteration along the growth faults and finally are deposited and enriched in the dilatation structures in the Devonian strata. The paper also brings up suggestions for further prospecting.
出处
《西北地质》
CAS
CSCD
2007年第B07期13-17,共5页
Northwestern Geology
基金
中国地质调查局国土资源大调查项目：战略性矿产资源重点勘查区找矿模型和有效技术方法研究（200310200001）
致谢：本文经王瑞廷博士的精心审查和指导,并提出修改意见,在参与基金项目过程中,也得到了中科院地矿所汪东波研究员、邱小平研究员的指导,作者谨此深表感谢.
关键词
地质特征
聚矿构造
硅质岩
热水喷流
构造-岩浆改造
成矿模式
geological characteristics
mineral aggregation structure
silicalite
hydrothermal exhalation
tectonic-magmatic alteration
metallogenic model
