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| 西秦岭温泉钼矿床地质—地球化学 特征与成矿过程探讨 | |
| 引用本文： | 王,飞.西秦岭温泉钼矿床地质—地球化学 特征与成矿过程探讨[J].地质与勘探,2012,48(4):713-727. |
| 作者姓名： | 王 飞 |
| 作者单位： | 1. 西北大学地质学系,大陆动力学国家重点实验室,陕西西安710069 陕西省地质矿产勘查开发局西安地质矿产勘查开发院,陕西西安710100 2. 西北大学地质学系,大陆动力学国家重点实验室,陕西西安710069 3. 甘肃工业职业技术学院,甘肃天水,741020 |
| 基金项目： | 本文由国家自然科学基金项目(编号: 41072068、41030423、40872071),西北大学研究生创新教育项目(编号:10YZZ24、 10DZSY06)及西北大学大陆动力学国家重点实验室科技部专项(编号:BJ091349)联合资助 |
| 摘 要： | 摘 要]温泉钼矿床的形成与西秦岭造山带印支期碰撞造山事件和岩浆活动密切相关。西秦岭温泉钼矿床成因及成矿过程的研究成为揭示印支期秦岭造山带构造体制转换与大规模成矿关系的关键,对发展秦岭造山带印支期成矿理论和印支期花岗岩的成矿潜力评价以及找矿勘探都具有重要意义。本文在前人对温泉钼矿床区域地质和矿床地质研究的基础上,对该矿床的矿床地质-地球化学特征做了进一步的综合研究,结果表明温泉钼矿床成矿物质来源于花岗岩浆气水热液,成矿与印支晚期花岗质岩浆结晶分异过程中产生的岩浆热液活动密切相关;温泉钼矿床具备岩浆热液型矿床的地质特征,其成矿过程为:晚三叠世秦岭造山带发生由挤压向伸展转变的构造体制转换引起下地壳发生熔融形成富含Mo的花岗质岩浆,岩浆在结晶过程中冷凝分异出的成矿流体经充填和交代作用而使Mo 富集形成矿床 |
| 关 键 词： | 西秦岭造山带 温泉钼矿床 地球化学 成矿过程 |
| 收稿时间： | 2011/10/9 0:00:00 |
| 修稿时间： | 2012/1/20 0:00:00 |
Geological and Geochemical Characteristics of the Wenquan molybdenum deposit and Ore-forming Process in the Western Qinling |
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| WANG Fei.Geological and Geochemical Characteristics of the Wenquan molybdenum deposit and Ore-forming Process in the Western Qinling[J].Geology and Prospecting,2012,48(4):713-727. | |
| Authors: | WANG Fei |
| Institution: | State Key Laboratory of Continental Dynamics, Department of Geology,Northwest University, Xi'an |
| Abstract: | Abstract:The Wenquan Mo deposit, Western Qinling is intimately associated with the late Triassic continental collisional orogenesis and magmatism in the Qinling Orogenic Belt(QOB). The study of its genesis and ore-forming process will provide insights into genetic connections between mineralization and the tectonic regime transformation of QOB and is of great importance for development of the Indonesian metallogenic theory and evaluation of the Mo mineralization potential as well as ore exploration in the QOB. Based on previous studies on regional geology and deposit geology of the Wenquan area, this work made a further study of the geological and geochemical characteristics of this ore field. The result suggests that the ore-forming fluid in this deposit is magmatic-hydrothermal fluid which originated from the magma of Mo-bearing granite. The Wenquan Mo deposit shows a characteristic of magmatic-hydrothermal quartz vein-type. The ore-forming process can be summarized as follows. In the late Triassic, tectonic setting transition from compression to extension in QOB resulted in partial melting of lower crust, forming Mo-bearing granitoids. The ore-forming fluid was generated during the late phases of magma crystallization, filled the joints or replaced the host rocks to produce the Late Triassic Wenquan Mo deposit |
| Keywords: | West Qinling Orogenic Belt Wenquan Mo deposit geochemistry ore-forming process |
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