浅析西天山地区卡拉盖雷金矿成矿地质特征
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摘要
本文研究的金矿分布于新疆西天山地区,该矿具体位置在那拉提构造带上偏西方向的区段以及伊犁裂谷带南缘的区域内,属于伊犁微板块。岩石地球化学研究表明,区内大哈拉军山组火山岩以钙碱性系列为主,含部分拉斑玄武岩系列,富集LREE和大离子亲石元素(Rb、Ba、Th、K),相对亏损HREE和高场强元素(Nb、Ta、Ti、P),具有大陆火山弧亲缘性。综合伊犁一中天山板块南缘的构造演化特征,认为矿区大哈拉军山组火山岩与大陆火山弧环境存在非常密切的关系,由于区内板块俯冲--碰撞等作用引起。文章结合矿区地质概况和成矿背景对卡拉盖雷铜金矿床成矿地质背景进行研究。
This study is located in the Western Tianshan Mountains, Xinjiang, which is located in the west section of the Na La Ti tectonic belt and the southern margin of the Yili rift zone, belonging to the Yili plate. Geochemical study indicates that Dahalajunshan formation volcano rocks in the calc alkaline series, including part of the tholeiitic series, enriched in LREE and lile(Rb, Ba, Th, K), the relative loss of HREE and high field strength elements(Nb, Ta, Ti, P), with the continental volcano arc affinity. Comprehensive Yili tectonic evolution in the southern margin of the Tianshan plate, that there is a very close relationship in Dahalajunshan volcano rock and continental volcano arc environment, due to the subduction zone--collision effect. Combining with the geological and metallogenic background of Cara gueret copper gold deposit metallogenic geological background.
This study is located in the Western Tianshan Mountains, Xinjiang, which is located in the west section of the Na La Ti tectonic belt and the southern margin of the Yili rift zone, belonging to the Yili plate. Geochemical study indicates that Dahalajunshan formation volcano rocks in the calc alkaline series, including part of the tholeiitic series, enriched in LREE and lile(Rb, Ba, Th, K), the relative loss of HREE and high field strength elements(Nb, Ta, Ti, P), with the continental volcano arc affinity. Comprehensive Yili tectonic evolution in the southern margin of the Tianshan plate, that there is a very close relationship in Dahalajunshan volcano rock and continental volcano arc environment, due to the subduction zone--collision effect. Combining with the geological and metallogenic background of Cara gueret copper gold deposit metallogenic geological background.
引文
[1]刘本培,等.西南天山构造格局与演化[M].武汉:中国地质大学出版社,2012.
[2]唐兰兰,等.新疆那拉提成矿带铜金矿找矿前景分析[J].金属矿山,2010(2):53-57.
[3]张理刚.稳定同位素在地质科学中的应用一金属活化热液成矿作用及找矿[M].西安:陕西科学技术出版社,2011.
[2]唐兰兰,等.新疆那拉提成矿带铜金矿找矿前景分析[J].金属矿山,2010(2):53-57.
[3]张理刚.稳定同位素在地质科学中的应用一金属活化热液成矿作用及找矿[M].西安:陕西科学技术出版社,2011.