| 甘肃省龙首山地区元古宙铜镍矿床成岩成矿地质背景探讨 |
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| 引用本文： | 陈向阳,陈博,焦建刚.甘肃省龙首山地区元古宙铜镍矿床成岩成矿地质背景探讨[J].甘肃地质学报,2008(4):11-16. |
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| 作者姓名： | 陈向阳 陈博 焦建刚 |
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| 作者单位： | 西安地质矿产研究所;长安大学地球科学与资源学院; |
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| 基金项目： | 国家自然科学基金项目(40702015)资助 |
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| 摘 要： | 作者综述了龙首山地区元古宙的地层岩性组合、岩石地球化学、年代学等特征，证明龙首山地区在整个元古宙期间的地质构造背景为大陆裂谷环境。结合甘肃金川铜镍硫化物矿床年代学进展（单颗粒锆石U—Pb年龄约827Ma），界定了金川矿床成岩成矿的地质背景为新元古代的裂谷环境，可能与Rodinia大陆裂解有关，但不具备地幔柱成因的诸多特征。
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| 关 键 词： | 裂谷 地幔柱 元古宙 金川 龙首山 |
DISCUSSION ON GEOLOGIC BACKGROUND OF LONGSHOUSHAN
AREA OF GANSU IN PROTEROZOIC EON |
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| CHEN Xiang-yang,CHEN Bo and JIAO Jian-gang.DISCUSSION ON GEOLOGIC BACKGROUND OF LONGSHOUSHAN
AREA OF GANSU IN PROTEROZOIC EON[J].Acta Geologica Gansu,2008(4):11-16. |
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| Authors: | CHEN Xiang-yang CHEN Bo and JIAO Jian-gang |
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| Institution: | CHEN Xiang-yang1,CHEN Bo1,JIAO Jian-gang2 |
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| Abstract: | Study on stratigraphy,petrogeochemistry,chronology and so on,the authors prove Longshou mountains is on inner-continent rifting background during Proterozoic.According to the chronology progress of Jinchuan mafic-ultramafic intrusions(Zircon U-Pb Shrimp age is 827Ma),the metallogenic and petrogenetic process of Jinchuan Cu-Ni sulfide ore deposit possibly happened in stretch structure setting of nero-proterozoic inner-continent rifting,which maybe related with global Rodinia continent rifting,but without cha... |
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| Keywords: | rift valley mantle plume proterozoic Jinchuan Longshou mountains |
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