摘要
大铜沟是宁夏卫宁北山重要的铜钴矿找矿靶区,对该区域先后开展过矿调、预查、普查及科研工作,但至今未有找矿突破。通过岩石地球化学测量资料,分析大铜沟钴异常的分布规律,并结合研究区地层、构造、围岩蚀变及矿化体特征,对大铜沟钴矿找矿方向进行了初步探讨。岩石地球化学测量显示,钴异常分布于土坡组地层,尤其有富集于石炭系土坡组内各类构造的趋势,背斜转折端、两翼以及分布于背斜转折端、两翼的次级构造与土坡组第一岩性段底部石英砂岩叠合的部位是钴元素富集成矿的有利部位。根据已有勘查钻孔资料以及地表调查结果,认为该区域钴矿勘查应该考虑地层倒转的因素,尝试在背斜核部施工钻孔,钻孔方位由核部向两翼方向钻进。
Datonggou is an important copper-cobalt prospecting target area in Weiningbei Mountain, Ningxia. Various mineral surveys, pre-surveys, censuses and scientific researches have been carried out in this area, yet no prospecting breakthrough was made. Based on the data of geochemical rock survey, the distribution law of cobalt in Datonggou was analyzed, and the prospecting guideline was preliminarily discussed in combination with the characteristics of strata, structure, rock alteration and mineralization bodies. The geochemical rock survey shows that cobalt anomalies are distributed in the soil strata, especially rich in various structures of the carboniferous strata. The turning end of the anticline, the two wings, the secondary structure distributed at the turning end of the anticline and the two wings, and the quartz sandstone superimposed at the bottom of the first lithologic section of the soil strata are favorable sites for cobalt enrichment and mineralization. According to the existing exploration drilling data and surface survey results, it is believed that the exploration of cobalt deposits in this area should consider the factors of stratigraphic inversion, and try to drill holes in the core of anticline, and the drilling direction is from the core to the two wings.
作者
马瑞赟
吴文忠
MA Ruiyun;WU Wenzhong(Ningxia Hui Autonomous Region Basic Geological Survey Institute,Yinchuan 750021,China)
出处
《宁夏工程技术》
CAS
2022年第3期279-283,288,共6页
Ningxia Engineering Technology
关键词
大铜沟
钴异常
分布规律
找矿方向
Datonggou
cobalt anomaly
regularities of distribution
prospecting guideline
