地球化学块体法在滇中层控型铜矿资源评价中的应用  

Application of Geochemical Blocks Method to Strata-Bound Copper Resources Assessment in the Central Yunnan Province

作　　者：金希[1,2] 杨功[3] 肖高强[3] 龚鹏[4] 熊燃[2] 赵波[4] 

机构地区：[1]浙江省地球物理地球化学勘查院,杭州310005 [2]中国地质大学资源学院,武汉430074 [3]云南省地质调查局,昆明650051 [4]中国地质大学地球科学学院,武汉430074

出　　处：《地质科技情报》2012年第4期33-39,共7页Geological Science and Technology Information

基　　金：中国地质调查局发展研究中心项目“矿产资源地球化学模型建立与定量预测研究”(1212010786001)

摘　　要：以滇中地区1∶20万水系沉积物区域化探扫面资料为基础,应用地球化学块体理论与方法,对研究区内Cu地球化学块体特征及层控型铜矿资源特征进行了系统分析。共圈出5个地球化学块体、10个面积相对较小的地球化学亚块体,并根据区域成矿地质背景划分为2个Cu地球化学分区。以1km矿床勘探深度为准则,计算各(亚)块体的铜金属供应量及铜矿产资源量,预测全区潜在铜矿资源总量为586.1万t。通过追踪地球化学块体谱系,揭示了元素在地球化学块体中逐步浓集成矿的轨迹,并结合区域控矿要素,确定了11个层控型铜矿成矿远景区,其中以3-1,3-2,10-1-1-1-1-1,10-1-1-2-1-1,10-1-1-2-1-2子块体的成矿潜力较大。Based on 1/200000 geochemical exploration data of central Yunnan and the theory of geochemical blocks, the authors have studied the characteristics of Cu geochemical block and the mineral resource of strata-bound copper deposit, and identified five Cu geochemical blocks and ten relatively small geochemical anomaly areas which have been divided into two Cu geochemical zoning on the basis of the regional geolog- ical setting. By taking 1 000 m as the criterion, the total predicted mineral resource of Cu is 586.1 million tons in the study area. Probing into the geochemical blocks pedigree may reveal the trajectory of gradual concentration and formation of ore deposits. According to the ore controlling factors, the study area was subdivided into eleven Cu prospect areas. Five of them （No. 3-1, No. 3-2, No. 10-1-1-1-1-1, No. 10-1-1-2- 1-1 and No. 10-1-1-2-1-2） are first order areas.

关 键 词：地球化学块体 滇中 层控型铜矿 矿产资源 

分 类 号：P59[天文地球—地球化学]