桂北地区硫铁矿地球化学特征及其意义  

GEOCHEMISTRY CHARACTERISTICS AND THE SIGNIFICANCE OF PYRITE IN THE NORTH OF GUANGXI

作　　者：江新华[1] 

机构地区：[1]中化地质矿山总局地质研究院,河北涿州072754

出　　处：《化工矿产地质》2010年第4期193-200,共8页Geology of Chemical Minerals

摘　　要：通过对桂北地区硫铁矿的铅、硫同位素进行计算和分析,认为该区硫铁矿的物质是多来源,多成因,多阶段演化的结果。推测成矿时代为海西—印支期,以印支期为主;硫源主要来自于同时代沉积的硫酸盐细菌还原作用;同一矿区中,铅、硫同位素组成相似,二者物质来源和成因一致。According to the calculation and analysis on the lead and sulphur isotope in pyrite in the north of Guangxi,we found that the matter source of pyrite was formed by the result of multi-source,multi-formation cause and multi-stage.The Metallogenic age is presumed as Hercynian-Indosinian age priority at Indosinian age.The sulfur source is mainly from the sulfate-reducing bacteria which was sedimentated at the same age.The isotope formation of lead and sulfur is similar,and the matter source and formation cause is accordance with each other at the same area.

关 键 词：桂北地区硫铁矿铅 硫同位素模式年龄物质来源 

分 类 号：P597.2[天文地球—地球化学] P619.216[天文地球—地质学]