罗邦良,刘灵,石庆鹏,夏瑞,周宗赞,杨贵龙,林泽渊.贵州天柱寨脚重晶石成矿地质特征及成矿模式[J].贵州地质,2021,38(2):220-228
贵州天柱寨脚重晶石成矿地质特征及成矿模式
Geological characteristics and metallogenic model of barite mineralization in Zhaijiao,Tianzhu,Guizhou
投稿时间:2021-01-23  
DOI:
中文关键词:  重晶石  地质特征  沉积盆地  成矿模式  天柱寨脚
英文关键词:Barite  geological characteristics  sedimentary basin  metallogenic model  Tianzhuzhaijiao
基金项目:“贵州省重要矿产大精查资助—贵州省天柱县寨脚重晶石矿详查(项目序号:2020-7)”和“贵州天柱坪地向斜重晶石矿层找矿模式与深部三维预测研究”。
作者单位
罗邦良 贵州省地矿局101地质大队贵州凯里556000 
刘灵 贵州省地矿局101地质大队贵州凯里556000 
石庆鹏 贵州省地矿局101地质大队贵州凯里556000 
夏瑞 贵州省地矿局101地质大队贵州凯里556000 
周宗赞 贵州省地矿局101地质大队贵州凯里556000 
杨贵龙 贵州省地矿局101地质大队贵州凯里556000 
林泽渊 贵州省地矿局101地质大队贵州凯里556000 
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中文摘要:
      通过天柱寨脚重晶石矿大精查,在寨脚-甲木冲一带老堡组顶部发现顺层产出的火山凝灰岩夹碳酸盐岩(灰岩)透镜,为重晶石海底喷流成因提供新的证据。通过钻孔岩心和露头沉积学特征观察,在重晶石矿床中见到丰富的滑塌构造、碎屑流构造和浊流构造,表明重晶石在喷流口初步堆积后,受到同沉积地质营力如地震、风暴作用形成震积岩,沿着斜坡向沉积盆地中心迁移并最终堆积成矿,形成大型、超大型的重晶石矿床。因此,重晶石矿床成因类型为海底喷流沉积矿床,建立斜坡水下重力流扇成矿模式。
英文摘要:
      Through the exploration of Zhaijiao barite ore in Tianzhu,a bedding-produced volcanic tuff intercalated with carbonate(limestone)lens was found on the top of the Laobao Formation in the Zhaijiao-Jiamuchong area,which is the origin of the barite submarine jet Provide new evidenceObservation of the sedimentary characteristics of borehole cores and outcrops shows that abundant slumping structures,clastic flow structures and turbidity current structures are seen in the barite deposits,indicating that the barites are subjected to syn-sedimentary geology after the initial accumulation of the ventsSeismites formed by the forces of earthquakes and storms migrated along the slope to the center of the sedimentary basin and eventually accumulated and formed large-scale and super-large barite depositsTherefore,the genetic type of barite deposits is a submarine jet sedimentary deposit,and a slope underwater gravity flow fan mineralization model is established
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