| 祁连山新元古代——早古生代火山作用与铁-铜多金属成矿 |
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| 引用本文： | 李向民,余吉远,王国强,黄博涛,武鹏.祁连山新元古代——早古生代火山作用与铁-铜多金属成矿[J].地质通报,2018,37(4):693-703. |
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| 作者姓名： | 李向民 余吉远 王国强 黄博涛 武鹏 |
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| 作者单位： | 中国地质调查局造山带地质研究中心/西安地质调查中心;国土资源部岩浆作用成矿与找矿重点实验室/西安地质调查中心 |
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| 基金项目： | 中国地质调查局项目《祁连成矿带肃南—大柴旦地区地质矿产调查》（编号：DD20160012） |
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| 摘 要： | 祁连山造山带新元古代—早古生代是板块构造演化与成矿的最重要时段,铁、铜多金属矿产资源丰富,成矿作用与新元古代—早古生代火山作用密切相关。根据矿床产出构造位置,将祁连山铁、铜多金属矿床分为4类:大陆裂谷型铁(铜)矿床、岛弧-岛弧裂谷型铜多金属矿床、陆缘裂谷型铜多金属矿床、扩张脊型铜矿床。镜铁山铁(铜)型矿床是新元古代大陆裂谷火山作用过程中热水沉积作用的产物;东沟铜矿为晚寒武世大洋扩张脊火山作用的产物;白银矿田铜多属矿床是奥陶纪与岛弧-岛弧裂谷火山作用的产物;石居里铜矿是晚奥陶纪弧后扩张脊有关火山作用的产物;红沟铜矿则是晚奥陶世陆缘裂谷火山作用的产物。
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| 关 键 词： | 新元古代-早古生代 火山作用 构造演化 祁连山 |
| 收稿时间： | 2017/7/7 0:00:00 |
| 修稿时间： | 2018/3/7 0:00:00 |
Late Neoproterozoic to Early Paleozoic volcanism and iron-copper polyme-tallic mineralization of the Qilian Mountain |
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| LI Xiangmin,YU Jiyuan,WANG Guoqiang,HUANG Botao and WU Peng.Late Neoproterozoic to Early Paleozoic volcanism and iron-copper polyme-tallic mineralization of the Qilian Mountain[J].Geologcal Bulletin OF China,2018,37(4):693-703. |
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| Authors: | LI Xiangmin YU Jiyuan WANG Guoqiang HUANG Botao and WU Peng |
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| Institution: | Research Center for Orogenic Geology, Xi''an Center of Geological Survey, China Geological Survey, Xi''an 710054, Shaanxi, China;MLR Key Laboratory of Magmatic Ore Deposits Genetic Models and Exploration, Xi''an Center of Geological Survey, Xi''an 710054, Shaanxi, China,Research Center for Orogenic Geology, Xi''an Center of Geological Survey, China Geological Survey, Xi''an 710054, Shaanxi, China;MLR Key Laboratory of Magmatic Ore Deposits Genetic Models and Exploration, Xi''an Center of Geological Survey, Xi''an 710054, Shaanxi, China,Research Center for Orogenic Geology, Xi''an Center of Geological Survey, China Geological Survey, Xi''an 710054, Shaanxi, China;MLR Key Laboratory of Magmatic Ore Deposits Genetic Models and Exploration, Xi''an Center of Geological Survey, Xi''an 710054, Shaanxi, China,Research Center for Orogenic Geology, Xi''an Center of Geological Survey, China Geological Survey, Xi''an 710054, Shaanxi, China;MLR Key Laboratory of Magmatic Ore Deposits Genetic Models and Exploration, Xi''an Center of Geological Survey, Xi''an 710054, Shaanxi, China and Research Center for Orogenic Geology, Xi''an Center of Geological Survey, China Geological Survey, Xi''an 710054, Shaanxi, China;MLR Key Laboratory of Magmatic Ore Deposits Genetic Models and Exploration, Xi''an Center of Geological Survey, Xi''an 710054, Shaanxi, China |
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| Abstract: | The most important period of tectonic evolution and mineralization in the Qilian orogenic belt is Late Neoproterozoic to Early Paleozoic. There are abundant iron-copper polymetallic ore deposits and they are closely related to the volcanism. According to the plate tectonic setting, the iron-copper polymetallic ore deposits can be grouped into four types:continental rift, island arc-is-land arc rift, continental margin rift and spreading ridge. The Jingtieshan-type iron-copper deposit was formed in the hot-water sedi-mentary mineralization of the volcanism in Late Neoproterozoic; the Donggou copper deposit was formed in an oceanic mid-ridge environment in Late Cambrian; the Baiyin orefield and the Qingshuigou-Bailiugou orefield were formed by the hot brine convec-tion and circulation related to the island arc-island arc rift volcanism during the Cambrian-Ordovician; the Shijuli copper deposit was formed in the back-arc spreading ridge in Late Ordovician; and the Honggou copper deposit was formed in a continental margin rift environment in Late Ordovician. |
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| Keywords: | Late Neoproterozoic to Early Paleozoic volcanism tectonic evolution Qilian Mountain |
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