| 张拴宏,王书兵.陕西周至马鞍桥金矿控矿构造及成矿模式[J].地质找矿论丛,1999,(3):71-77 |
| 陕西周至马鞍桥金矿控矿构造及成矿模式 |
| ORE-CONTROLING STRUCTURE AND ORE-FORMING MODEL OF THE MA ANQIAO GOLD DEPOSIT, ZHOUZHI COUNTY, SHAANXI PROVINCE |
| 投稿时间：1999-05-31 修订日期：1999-08-04 |
| DOI：10.6053/j.issn.1001-1412.1999.3. 010 |
| 中文关键词: 脆-韧性剪切带 控矿构造 成矿模式 金矿 |
| 英文关键词:brittle-ductile shear zone ore-controling structure ore-forming model gold deposits |
| 基金项目: |
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| 摘要点击次数: 1419 |
| 全文下载次数: 1892 |
| 中文摘要: |
| 马鞍桥金矿位于近EW 向展布的脆 韧性剪切带内,该剪切带是区内最主要的控矿构造。在脆 韧性剪切带形成之后侵入了早侏罗世的香沟花岗岩体,为成矿提供了主要的热力来源,促进了泥盆系矿源层中成矿物质的活化迁移。在成矿物质迁移过程中,由于受到泥盆系与石炭系地层平行不整合面附近脆 韧性剪切带顶部碳质片岩和大理岩的屏蔽,成矿物质开始在脆 韧性剪切带内的有利空间沉淀聚集,形成马鞍桥金矿体。 |
| 英文摘要: |
| The Ma’anqiao gold deosit is located in the E—W trending brittle-ductile shear zone near the disconformity surface of Devonian and Carboniferous System, which is a major ore-controling structure in the area. The Xianggou granite intruded after the formation of the shear zone in Early Jurassic(with 39Ar-40Ar dating age of 200 Ma)would provide the heat to activate the ore-forming materials in the Devonian rocks to be transported to the shear zone, where the impervious marble and carbonaceous schists on the top would act as a shield to prevent their further migration and gather them into gold deposit. |
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