摘要
贵州省磷矿资源丰富,查明资源量居全国第二位。《中国矿产地质志·贵州卷·磷》在全面收集贵州磷矿勘查开发和研究资料及总结贵州5种矿床式地质特征的基础上,分析了贵州磷矿成矿地质背景,认为在拉伸纪晚期(下江时期)及震旦纪—早寒武世大陆地壳离散构造环境下,陆内隆升或断裂隆起控制了磷矿床形成;厘定了早震旦世磷矿和寒武纪晋宁期磷矿成矿时代分别为635580 Ma、541520 Ma。认为早震旦世黔中古陆周边成矿有利环境是初始碳酸盐(磷酸盐)台地之生物滩(礁)和局限台地潮间—潮下带,寒武纪晋宁期磷矿成矿有利环境是局限—半局限台地上相对凹陷的生物滩环境;成矿物质来源主要为陆源,上升洋流仅是物质搬运的动力;总结了磷矿成矿规律,建立了“开阳式”磷矿、“瓮福式”磷矿和“新华式”磷矿区域成矿模式,提出了下步找矿方向,对未来勘查与研究进行了展望。
Guizhou Province has abundant phosphate ore resources,with the confirmed resource quantity rank second in the country.Based on a comprehensive collection of exploration,development,and research data on phosphorus deposits in Guizhou,as well as a summary of the geological characteristics of five types of mineral deposits in Guizhou,the research group of‘Geology of Mineral Resources of China Guizhou Volume,phosphorate’analyzed the geological background of phosphorus deposits in Guizhou.It is believed that the formation of phosphorus deposits was controlled by intracontinental uplift or fault uplift in the late extensional period(Xiajiang period)and the Sinian early Cambrian continental crustal discrete tectonic environment.The mineralization ages of early Sinian and Cambrian Jinning period phosphate deposits have been determined to be 635Ma-580Ma and 541Ma-520Ma respectively.The favorable environment for mineralization around the Qianzhong ancient land in the early Sinian period is the biological beach(reef)of the initial carbonate(phosphate)platform and the intertidal zone of the restricted platform.The favorable environment for mineralization of Cambrian Jinning period phosphate deposits is the biological beach environment of relative depression on the restricted semi restricted platform;The main source of ore-forming materials is terrestrial,and rising ocean currents are only the driving force for material transport;Summarized the ore-forming laws of phosphate deposits,established regional ore-forming models for"Kaiyang style"phosphate deposits,"Wengfu style"phosphate deposits,and"Xinhua style"phosphate deposits,and the further exploration direction are carried out and the future prospecting and studying are proposed.
作者
陈国勇
陈仁
杜远生
刘建中
王泽鹏
陈群
任厚州
CHEN Guo-yong;CHEN Ren;DU Yuan-sheng;LIU Jian-zhong;WANG Ze-peng;CHEN Qun;REN Hou-zhou(Guizhou Bureau of Geology and Mineral Exploration and Development,Guiyang 550008,Guizhou China;Guizhou Geological Survey,Guiyang 550005,Guizhou,China;China University of Geosciences,Wuhan 430074,Hubei,China;No.105 Geological Party,Guizhou Bureau of Geology and Mineral Resources Development,Guiyang 550018,Guizhou,China;No.115 Geological Party,Guizhou Bureau of Geology and Mineral Resources Development,Qingzhen 551499,Guizhou,China;No.104 Geological Party,Guizhou Bureau of Geology and Mineral Resources Development,Duyun 558099,Guizhou,China,Guizhou)
出处
《贵州地质》
2023年第4期378-388,共11页
Guizhou Geology
基金
“地质数据更新与应用服务计划,国家基础地质数据更新工程”中的“中国矿产地质与区域成矿规律综合研究《中国矿产地质志》”项目(编号:DD20221695、DD20190379、DD20160346)资助。
关键词
磷矿
含磷岩系
黔中古陆
海岸类型
多岛隆起
成矿模式
贵州
Phosphate ore
Phosphorus bearing rock series
Qianzhong ancient land
Coastal type
Multiple island uplift
Metallogenic model
Guizhou
