|本期目录/Table of Contents|

[1]杨引串,姚精选.武家沟铜金)矿成矿预测及远景分析[J].地球科学与环境学报,2004,26(01):13-16,28.
　YANG Yin-chuan,YAO Jing-xuan.Metallogenetic targets and prospect analyses of the Wujiagou copper-gold deposit , Shanxi province[J].Journal of Earth Sciences and Environment,2004,26(01):13-16,28.
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《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

卷:
第26卷
期数:
2004年第01期
页码:
13-16,28
栏目:
出版日期:
2004-03-20

文章信息/Info

Title:
Metallogenetic targets and prospect analyses of the Wujiagou copper-gold deposit , Shanxi province
作者:
杨引串; 姚精选
山西省地球物理化学勘查院,山西运城044004
Author(s):
YANG Yin-chuan; YAO Jing-xuan
Shanxi Institute of Geophysical and Geochemical Exploration , Shanxi Yuncheng 044004 , China
关键词:
武家沟矿区; 成矿预测; 远景分析
Keywords:
Wujiagou ore field; metallogenetic target; prospect analysis
分类号:
P618.51
DOI:
-
文献标志码:
A
摘要:
武家沟一带成矿地质条件优越,附近已探明不少铜金矿床,但矿床系列中尚缺少受剪切构造带 控制的层状矽卡岩型铜金)矿床类型。使用地球化学、地球物理方法,预测和勘查半隐伏—隐伏铜金) 矿床,是今后地质找矿的必由之路。武家沟矿区出露地层为太古界涑水群和元古界中条群,主要由一套 片麻岩、花岗岩和大理岩组成;由3条近EW向韧性剪切带和一组近SN向压扭)向断裂组成的扭动剪 切构造体系,控制了区内岩浆岩的就位和热液矿产的分布;武家沟闪长斑)岩体呈长条状,NE向展布, 倾向SE。铜金矿化体赋存于余元下组不纯大理岩中,属Ⅲ号剪切带控制,呈NE向展布,与多金属矿化 矽卡岩带展布方向基本一致。铜金)矿化体呈浸染状、细脉状、细脉-浸染状等分布于矽卡岩中或其内 侧。激电异常规模大,强度高,梯度清晰,中心明显,覆盖了整个金属矿化矽卡岩带,激电测深证明激发 极化体总体向西南侧伏,与地质测量结果相一致。地球化学异常亦是东北段出现强大Cu异常,而西南 段仅出现矿上元素异常,与地质物探成果完全吻合。可以有根据的预测,武家沟是一个具有相当规模的 隐伏铜金)矿床。
Abstract:
Certain known Cu-Au deposits aroundWujiagou show an advantageous geological setting for metallogenesis in this area .Yet the ore fields lack the layered skarn type of Cu-Au deposits controlled by the shearing-zones .It is thus significant to target this type of mineral deposits that are not exposed or at depth through geochemical and geophysical methodologies.The exposed strata in the Wujiagou ore filed belong to the Sushui Group of Archaean age and the Zhongtiao Group of Proterozoic age , consisting mainly of gneisses, granitoids and marbles.The occurrence of granitoids and mineral deposits is primarily controlled by three EW-orientated ductile-shearing zones and one NS-striking compressingshearing fault belt.The Wujiagou diorite porphyries , shaped as a strip, extend in NE and dip toward SE.The NE-striking Cu-Au metallogenetic belt is hosted by the impure marbles of the Yuyuanxia Formation and controlled by shearing zone III , according with the occurrence of the poly-metallic mineralization skarn zone .Cu-Au mineralization disseminated or as veinlets is distributed in skarns.Polarization anomalies of the mineralized skarn are in large scale and manifest high intensity and the apparent gradient and center , suggesting that the polarized bodies generally plunge toward SW.This corresponds to the fact that intense Cu anomalies mark the NE part of the geochemical anomalies , whereas the SW part is only identified by related halo elements.Consequently , there is a large scale of Cu-Au deposit at depth inWujiagou.

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备注/Memo

备注/Memo:
[收稿日期]2003-04-30
[基金项目]财政部财政扶持基金勘查项目财建2002-201)[作者简介]杨引串1962-),女,山西夏县人,工程师,现从事矿床地质工作。
更新日期/Last Update: 2004-03-20