内蒙古三七林场地区土壤地球化学特征及找矿靶区研究  

Soil geochemical characteristics and prospecting target area in Sanqi forest farm Area, Inner Mongolia

作　　者：李新 贺晓天 何鹏[2] 白龙 刘朝阳[2] 李福斌 陈卓 刘梦迪 LI Xin;HE Xiaotian;HE Peng;BAI Long;LIU Chaoyang;LI Fubin;CHEN Zhuo;LIU Mengdi(Natural resources bureau in Ulanqab City,Ulanqab 012000,Inner Mongolia,China;The Second Geo-exploration Institute of Mineral Prospecting and Development Bureau of Henan Province,Zhengzhou 450000,Henan,China)

机构地区：[1]乌兰察布市自然资源局,内蒙古乌兰察布012000 [2]河南省地质矿产勘查开发局第二地质勘查院,河南郑州450000

出　　处：《矿产勘查》2022年第4期481-489,共9页Mineral Exploration

基　　金：内蒙古自治区地质勘查基金项目“呼伦贝尔市沃力嘎沟等四幅1∶5万区域矿产地质调查”(NMKD2014-22)资助。

摘　　要：三七林场地区位于阿尔山—博克图—多宝山铁、铜、钼、金、铅锌、钨多金属成矿带东南部,具有寻找热液型铜铅锌矿及斑岩型钼矿的前景。为查明三七林场地区成矿规律,明确找矿靶区,在区内开展了1∶5万土壤地球化学测量工作。通过对成矿元素的含量特征、不同地质单元的元素分布特征以及元素组合特征等进行研究,并对重点土壤异常进行查证,优选出AP24—甲1综合异常区为最佳的热液型铜铅锌矿找矿靶区,AP31—甲1综合异常区为最佳的斑岩型钼矿找矿靶区。结合对区内地层、岩性、构造等有利控矿因素进行综合分析,认为铜山组地层是区内重要的矿源层,是寻找热液型铜铅锌矿床的有利层位;满克头鄂博组、玛尼吐组与早白垩世花岗岩接触部位是寻找斑岩型钼矿的有利地段,为三七林场地区进一步矿产勘查工作提供了依据。Sanqi forest farm is located in the southeast of Aershan-boketu-Duobaoshan polymetallic metallogenic belt with iron,copper,molybdenum,gold,lead,zinc and tungsten,and has the prospect of finding hydrothermal copper-lead-zinc ore and porphyry molybdenum ore.1∶50,000 soil geochemical survey was carried out in Sanqi forest farm,Inner Mongolia.Through sample analysis and data statistics,the content characteristics of ore-forming elements,element distribution characteristics of different geological units and element combination characteristics were studied.Through detailed investigation of key anomalies,AP24-A1 comprehensive anomaly area is selected as the best prospecting target area for hydrothermal Cu-Pb-Zn deposit,and AP31-A1 comprehensive anomaly area is the best prospecting target area for porphyry molybdenum deposit.It is considered that Tongshan formation is an important source bed in the region and a favorable horizon for finding hydrothermal copper-lead-zinc deposits.The vicinity of the contact zone between Manketou Ebo formation and Manitu formation and early Cretaceous granite is a favorable location for searching porphyry molybdenum deposits,which can provide a basis for further mineral exploration in Sanqi forest farm area.

关 键 词：找矿靶区 地球化学特征 三七林场地区 内蒙古 

分 类 号：P595[天文地球—地球化学] P632[天文地球—地质学]