中条山南段中生代成矿模式及找矿意义
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摘要
中条山南段成矿地质构造条件优越,特别是中生代构造岩浆活动强烈,生成了铜、金等一系列内生矿产。文章对区域控矿构造、中生代岩浆活动以及区域矿产分布等进行了综合分析,认为该区成矿作用过程为:中生代软流圈上侵及形成的大规模岩浆上涌为成矿提供了矿液来源及热动力来源,深大拆离断裂及剪切变形变质带为矿液上侵就位提供了通道,成矿部位为深大断裂的次级断裂、剪切带内,以及岩体周位构造裂隙中。对应的矿床类型为拆离带型矿床、剪切带型矿床、次火山岩型裂隙矿床。还据此成矿模式进行了成矿区段预测,以便对该区找矿工作有所帮助。
Favorable geological conditions for mineralization in south section of Zhongtiao Mountain,especially the Mesozoic tectonic magmatic activity is strong,generated a series of endogenous mineral resources such as copper and gold. In this paper,based on analyzing the regional ore-controlling structure,mesozoic magmatic activity,and the distribution of regional mineral resources,It is considered that the metallogenetic process is: as follows: the source of ore-bearing hydrothermal solution and the source of thermal power are provided by large scale magmatic upwelling from the asthenosphere of Mesozoic; the deep detachment faults and shear deformation metamorphic belt provides a channel for ore fluid intrusion in place; mineralization site is the secondary fault of deep detachment faults,shear deformation metamorphic belt and the structural fractures surrounding rocks. The corresponding deposit type is detachment zone type,shear zone type,secondary volcanic rock fracture type. Metallogenic model is used to predict metallogenic area,so as to help the prospecting in the area.
Favorable geological conditions for mineralization in south section of Zhongtiao Mountain,especially the Mesozoic tectonic magmatic activity is strong,generated a series of endogenous mineral resources such as copper and gold. In this paper,based on analyzing the regional ore-controlling structure,mesozoic magmatic activity,and the distribution of regional mineral resources,It is considered that the metallogenetic process is: as follows: the source of ore-bearing hydrothermal solution and the source of thermal power are provided by large scale magmatic upwelling from the asthenosphere of Mesozoic; the deep detachment faults and shear deformation metamorphic belt provides a channel for ore fluid intrusion in place; mineralization site is the secondary fault of deep detachment faults,shear deformation metamorphic belt and the structural fractures surrounding rocks. The corresponding deposit type is detachment zone type,shear zone type,secondary volcanic rock fracture type. Metallogenic model is used to predict metallogenic area,so as to help the prospecting in the area.
引文
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赵斌.2009.山西省中条山洞沟式铜矿的地质特征及其找矿前景分析[R].山西物化探,9.
冯旭亮,王万银,李建国,赵斌,赵楠.2015.大中条地区重磁场特征及其断裂分布与构造单元[J].地质与勘探,51(3):563-572.
黄崇轲,朱裕生,白冶,王惠章,尚修志.2001.中国铜矿床[M].地质出版社,1-190.
牛树银.2008.地幔热柱多级演化及其幔枝构造成矿[M].石家庄经济管理学院,56-670.
山西地质科学研究所.1999.山西省中条山地区前寒武纪铜矿成矿条件及找矿预测[R].27.
山西地质矿产局.1972.运城三门峡幅1:20万区域地质调查报告[R].
山西地质矿产局.1993.平陆测区1/5万区域地质调查报告[R].
刑集善.1991.山西板块构造及及其其演化特征初探[J].山西地质,17.
薛克勤,邓军,商培林,曹锡林.2006a.中条山西南段中生代热液成矿系统分析[J].地质与勘探,42(2):7-12.
薛克勤.2006b.中条裂谷构造与成矿作用研究[D].北京:中国地质大学(北京),1-86.
赵斌.2009.山西省中条山洞沟式铜矿的地质特征及其找矿前景分析[R].山西物化探,9.