摘要
镇巴地区大面积分布灰岩、白云质灰岩、泥岩、黏土岩等,是寻找黏土岩型锂矿的有利目标区。根据1:20万水系沉积物锂异常图,在扬子板块北缘存在锂异常,且在规模、强度、空间分布上与吴家坪组王坡页岩段有显著的相关性。在此基础上,基于近期找矿工作成果,重点分析二叠系上统吴家坪王坡页岩段的锂成矿条件,探讨镇巴杨家河地区锂资源找矿前景。二叠系上统吴家坪组(P_(3)w)王坡页岩段主要为铁—铝质黏土岩,在黏土岩内局部夹红褐色-深灰色块状富铁层透镜体,局部发育煤线,并见有植物化石碎片,为滨岸沼泽相环境;目前通过地质路线调查、岩石地球化学测量、槽探工程揭露和钻孔验证,发现多处找矿线索,显示该层位具有较大的找矿潜力。
Limestones,dolomitic limestones,mudstones,claystones,etc.are widely distributed in Zhenba area,showing that it is a favorable target area for the exploration of clay stone-type lithium deposit.According to the lithium anomaly of 1:200000 stream sedimentary survey,there is a lithium anomaly in the north margin of the Yangtze Plate,and it has a significant correlation with Wangpo shale member of Wujiaping Formation in terms of scale,intensity and spatial distribution.On this basis,for the recent achievements of prospecting work,this paper focuses on analyzing the lithium metallogenic condition of Wangpo shale member of the Upper Permian Wujiaping Formation,and discusses the prospecting prospect of lithium resources in the Yangjiahe area of Zhenba County.Wangpo shale member of the Upper Permian Wujiaping Formation(P_(3)w)is mainly composed of iron-aluminum clay stones.Locally,there are lenticular bodies of reddishbrown to dark gray massive iron-rich layers intercalated within the clay stones,and coal seams are locally developed,with fragments of plant fossils found,indicating a coastal swamp faces environment.At present,through geological route survey,geochemical survey of rocks,the exposure of trench exploration projects and drilling hole verification,multiple prospecting clues have been discovered,indicating that this stratigraphic stratum has a great prospecting potential.
作者
王春晖
王涛
姜万红
张伟伟
邓皓
WANG Chunhui;WANG Tao;JIANG Wanhong;ZHANG Weiwei;DENG Hao(China Shaanxi Nuclear Industry Group 211 Brigade Co.,Ltd.,Xi'an710024,Shaanxi,China)
出处
《矿产与地质》
2026年第1期45-51,共7页
Mineral Resources and Geology
基金
陕西省地质勘查基金项目(编码:61202413502)资助。
关键词
黏土型锂矿
吴家坪组
成矿条件
找矿潜力
陕南镇巴
clay-type lithium deposit
Wujiaping Formation
metallogenic condition
prospecting potential
Zhenba County of South Shaanxi
