青海省德令哈北部宗务隆地区成矿特征与找矿远景分析  

Metallogenic Characteristics and Ore-searching Prospect of the Zongwulong Area in Northern Delingha, Qinghai Province

作　　者：周杰斌[1] 石菲菲[2] 邹林[2] 张普斌[2] 张建国[2] 

机构地区：[1]白银有色集团股份有限公司,甘肃白银730900 [2]有色金属矿产地质调查中心,北京100012

出　　处：《地质与勘探》2011年第2期197-203,共7页Geology and Exploration

基　　金：国家"十一五"科技支撑计划课题六(编号:2006BAB01A06)资助

摘　　要：青海省德令哈北部地区位于宗务隆山晚古生代陆内拗陷带内,构造-岩浆活动十分强烈,宗务隆山群沿海西期NWW向拉分海槽分布,形成了"两隆夹一槽"总体格局,多处沿生长断裂形成喷流沉积岩的沉积作用,为本区喷流沉积成矿构成了有利条件。本文通过对区域地质背景、成矿构造环境、成矿地质特征及矿化分布规律的综合研究与分析,认为该区具有寻找喷流沉积型铅锌银矿床和矽卡岩型及热液脉型铜多金属矿床的有利条件,且矿化主要受宗务隆山群上亚群次级向斜两翼与向堑式下滑断裂控制,集中分布于两条NW向断裂之间,这为本区下一步开展矿产资源勘查评价和找矿靶区优选提供了科学依据,指明了地质找矿方向。The northern region of Delingha in Qinghai Province is located in a late Paleozoic continental rift zone of the Zongwulong Mountains,with strong tectonic and magmatic activities.The Zongwulong Mountains are distributed along the Hercynian pull-apart trough,striking in NWW,forming an overall pattern of ＂one trough between two uplifts＂.The widespread sedimentation generated sedimentary exhalative rocks along growth faults provided favorable conditions for mineralization in this area.This work studied the regional geological background,metallotectonic environment and distribution rules of mineralization.It is suggested that this region has a good prospect to search for Pb-Zn-Cu deposits of sedimentary exhalative type,and skarn type or hydrothermal vein type copper-polymetallic deposits.And the mineralization is mainly controlled by the both flanks of the secondary syncline in upper sub-group of the Zongwulong Group and depressed faults,particularly concentrated between the two NW trending faults.These results offer scientific evidence for further survey and assessment of mineral resources and target area choice in this region.

关 键 词：喷流沉积矿床 成矿地质特征 找矿前景 宗务隆地区 

分 类 号：P612[天文地球—矿床学]