黔西北地区多元素地球化学特征与找矿标志  

Geological and Geochemical Characteristics of Multi-Elements and Prospecting Criteria in Northwestern Guizhou Province

作　　者：许亚明[1] 廖桂香[2] 廖莉萍 

机构地区：[1]吉林大学综合信息矿产预测研究所,长春130026 [2]中国地质科学院地球物理地球化学勘查研究所,河北廊坊065000 [3]贵州省地质调查研究院,贵阳550004

出　　处：《吉林大学学报（地球科学版）》2009年第5期818-823,共6页Journal of Jilin University：Earth Science Edition

基　　金：国土资源大调查项目(200010200166)

摘　　要：黔西北地区是一个裂谷盆地构造区,盆地内发育铅锌矿床,矿化受断裂和地层的联合控制。从区域地球化学、水系沉积物地球化学、地层地球化学以及地球化学块体等几个方面的特征进行了较为系统的研究。断裂两侧及断裂交汇处、岩体接触带、Pb-Zn组合异常区以及地球化学块体的浓集中心为该区的主要找矿标志,应注重多元素组合异常区内的研究。另外,该区具条带状的地球化学块体浓集带和高强度的Pb、Zn元素化探组合异常之特点,具有良好的Pb、Zn元素成矿背景;建议进行综合研究,尽早发现大型甚至超大型铅锌矿床。The northwestern Guizhou Province is located in a rift basin with some lead -zinc deposits controlled by the faults and strata. The authors discusse systemically based on several aspects from studies on regional geochemistry, stream sediment geochemistry, geochemical stratigraphy and geochemical block etc. Important prospecting criteria in the area include： located at the both sides of the fracture and/or adjacent to fracture junction, at rock contact zone, within Pb- Zn anomalous zones and in the concentration centers of geochemical block. Special attention should be paid to the comprehensive, anomalous zones consisting of several elements. In addition, the northwestern Guizhou Province are featured by banded geochemical concentration blocks and by intensely enrichment of Pb and Zn, thus is highly potential for hosting the Pb - Zn deposits. It is suggested that more comprehensive studies are need to find some large, even superlarge lead- zinc deposits.

关 键 词：黔西北 铅锌矿 地质地球化学 成矿规律 

分 类 号：P618[天文地球—矿床学]