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| 北祁连清水沟-白柳沟Fe-S和Pb-Zn-Cu型块状硫化物矿床形成环境探讨 | |
| 引用本文： | 彭素霞,陈隽璐,程建新,余吉远,张苏楠,张海东.北祁连清水沟-白柳沟Fe-S和Pb-Zn-Cu型块状硫化物矿床形成环境探讨[J].地质学报,2013,87(7):1003-1012. |
| 作者姓名： | 彭素霞 陈隽璐 程建新 余吉远 张苏楠 张海东 |
| 作者单位： | 1. 长安大学地球科学与国土资源学院,西安,710054;中国地质调查局西安地质调查中心,西安,710054 2. 中国地质调查局西安地质调查中心,西安,710054 3. 长安大学地球科学与国土资源学院,西安,710054 |
| 基金项目： | 中国地质调查局大调查项目"阿尔泰—准噶尔北缘成矿带矿产资源调查成果集成"(编号12120113041900)资助成果 |
| 摘 要： | 青海祁连县清水沟—白柳沟新元古代寒武纪大陆裂谷双峰式海相火山岩中产有Fe-S和Pb-Zn-Cu型块状硫化物矿床.这两类矿床除受所在火山岩陆壳幔源区的部分熔融程度和火山作用旋回性不同影响外,主要受产生构造位置和火山岩浆源区物性条件所控制.其中产Fe-S型矿床的石头沟-香子沟穹窿火山作用,相对形成于近裂谷扩张中心的深海环境,以低K2O钙碱性的拉斑玄武质或英安质下地壳为物源区环境;郭米寺-白柳沟穹窿的Pb-Zn-Cu型火山作用形成于远离扩张中心的陆缘弧环境,源区为一种由地幔源和壳源共同构成的混合源.在矿床成因类型方面,前者近似塞浦路斯的铜黄铁矿,后者为较典型的日本黑矿型. |
| 关 键 词： | 块状硫化物矿床 成矿构造环境和源区条件 北祁连 |
| 收稿时间： | 2012/5/10 0:00:00 |
| 修稿时间： | 2012/8/21 0:00:00 |
Mineralization Environment of the Massive Fe-S Type and Pb-Zn-Cu Type Sulfide Deposits in Qingshuigou-Bailiugou, North Qilian, NW China |
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| PENG Suxi,CHEN Junlun,CHENG Jianxin,YU Jiyuan,ZHANG Sunan and ZHANG Haidong.Mineralization Environment of the Massive Fe-S Type and Pb-Zn-Cu Type Sulfide Deposits in Qingshuigou-Bailiugou, North Qilian, NW China[J].Acta Geologica Sinica,2013,87(7):1003-1012. | |
| Authors: | PENG Suxi CHEN Junlun CHENG Jianxin YU Jiyuan ZHANG Sunan and ZHANG Haidong |
| Abstract: | In Qingshuigou-Bailiugou of Qilian County Qinghai Province, there are Fe-S type and Pb-Zn-Cu type of massive sulfide deposits in the Neoproterozoic-Cambrian continental rift bimodal marine volcanic rocks.The ore deposits were caused by the differences of volcanic cycle and the degree of partial melting from crust-mantle source region, especially controlled the tectonic positions and physical conditions in magmatic source. Say concretely, volcanism in the Shitougou-Xiangzigou dome hosting Fe-S type deposits happened correspondingly in the deep sea environment near to the center of rift expansion and took the dacite lower crust or the K2O-low calc-alkali basalt lower crust as the provenance. In comparison, volcanism in the Guomisi-Bailiugou dome hosting Pb-Zn-Cu type deposits happened correspondingly in the continental margin arc environment away from the center of rift expansion and took mixture of the mantle source and crust source. In regards to metallogenic type, the former is Cyprus-type and the latter is Kuroko-type. |
| Keywords: | massive sulfide deposits metallogenic tectonic environment and the provenance North Qilian |
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