摘要
乌拉尚德地区位于塔里木陆块北东缘增生带,是铁、金、铜、钼、镍矿的有利找矿靶区。为查明该区元素地球化学异常特征,为资源潜力评价和实现找矿突破提供依据。论文在扎敏敖包一带1∶20万水系沉积物测量的基础上,通过统计分析该区元素的地球化学参数、对乌拉尚德地区的AS2地球化学异常特征进行剖析研究和以1∶5万水系沉积物加密测量、地质路线踏勘检查为主的三级查证工作。认为AS2综合异常成矿地质条件有利,元素组合齐全,单元素异常叠合好,具叠加晕、多建造晕特征。异常区有两个浓集中心,划分为2个子异常,已知铅锌矿点与异常浓集中心套合好,并新发现伴生有铜、钍、银、锰、砷、锑等多种有益组分。矿带深部铜族元素和钍、镍含量明显增高,外围矿化蚀变发育,深部及外围找矿潜力巨大,该异常为一显著矿致异常。AS2异常区成矿地质条件有利,地球化学异常特征明显,地表矿化蚀变广泛发育,是寻找热液型Cu、Pb、Zn、Ag、Th、As、Sb多金属矿的有利靶区。
Ulashande is located in the northeastern margin of the Tarim Block. It is an advantageous prospecting target for iron, gold, copper, molybdenum, and nickel. In order to find out the characteristics of elemental geochemical anomalies in the area, it provides a basis for the evaluation of resource potential and the realization of prospecting breakthroughs. Based on the measurement of 1:200,000 river sediments in Zamin Minbao area, this paper analyzes the geochemical parameters of the elements in the area, analyzes the features of AS2 geochemical anomalies in Ulashande area, and uses 1:50000 water system sediments. The three-level verification work is mainly based on material encryption surveys and geological route surveys. It is believed that the comprehensive anomalous mineralization geological conditions of AS2 are favorable, the elemental composition is complete, the single element anomalies are superimposed, and there is a superimposed halo and many built halo features. There are two concentration centers in the anomaly zone, which are divided into two sub- anomalies. It is known that the leadzinc ore points and the anomalous concentration centers are well-arranged and new discoveries are associated with copper, antimony, silver, manganese, arsenic, tellurium, and other beneficial effects. The content of copper elements in the deep part of the ore belt and the content of niobium and nickel are significantly higher, and the external mineralization alterations are developed. The prospecting potential in the deep and peripheral areas is huge. The anomaly is a significant mineral anomaly. The anomalous area of AS2 has favorable geological conditions for mineralization, obvious features of geochemical anomalies, extensive surface mineralization and alteration, and is a favorable target area for the exploration of hydrothermal Cu, Pb, Zn, Ag, Th, As, Sb polymetallic ores.
作者
丁心科
段先哲
张彦生
马永胜
王灿州
DING Xin-ke;DUAN Xian-zhe;ZHANG Yan-sheng;MA Yong-sheng;WANG Can-zhou(No.262 Geological Team of Zhejiang Nuclear Industry Corp., Huzhou 313000, China;Zhejiang Huzhou Geological Technology Development Company, Huzhou 313000, China;University of South China, Hengyang 421001, China;No.108 Team, Inner Mongolia Bureru of Nonferrous Geological Survey, Chifeng 024000, China)
出处
《河北地质大学学报》
2019年第3期19-27,共9页
Journal of Hebei Geo University
基金
湖南省自然科学基金(2017JJ3261)
关键词
内蒙古
乌拉尚德地区
化探异常
地球化学特征
Inner Mongolia
Ulashande area
geochemical anomalies
geochemical characteristics
