新疆萨热克铜矿辉绿岩地球化学特征与动力学意义
发布时间:2018-12-13 20:30
【摘要】:萨热克铜矿的南矿带发育了大量的辉绿岩脉,本文针对地表和钻孔中采集的辉绿岩样品开展了岩石地球化学研究。结果显示,岩石w(Si O2)在40.36%~44.78%之间,w(TFe2O3)(全铁)和w(Ti O2)变化范围分别为7.19%~10.67%和2.28%~2.73%,呈现高钛、富碱和贫硅的演化趋势,属于高钛系列辉长(绿)岩类;稀土和微量元素具有与OIB相似的特征。萨热克辉绿岩岩石地球化学特征与托云盆地玄武岩极其相似,二者应为同源产物,形成于板内拉伸构造环境,可能与岩石圈拆沉作用有关,受控于印度-亚洲大陆碰撞的远程效应。
[Abstract]:A large number of diabase veins have been developed in the southern ore belt of Sajek Copper Mine. In this paper, geochemistry of diabase samples collected from surface and boreholes has been studied. The results showed that the range of, w (TFe2O3 (total iron) and w (Ti O2 (44.78%) of rock w (Si O 2 were 7.19% 10.67% and 2.28% 2.73, respectively. The evolution trend of alkali-rich and silicon-poor belongs to the high-titanium series of pyroxenite. Rare earth elements and trace elements are similar to OIB. The petrogeochemical characteristics of Sajiek diabase are very similar to those of Tuoyun basin basalt. They should be homologous products and formed in the intraplate extensional tectonic environment, which may be related to lithospheric desilting. Controlled by the long-range effects of the Indian-Asian continental collision.
【作者单位】: 北京矿产地质研究院;中国地质大学(北京)地球科学与资源学院;昆明理工大学国土资源工程学院;
【基金】:国土资源部公益性项目(201511016-2) “十二五”国家科技支撑项目(2015BAB05B04-03)
【分类号】:P618.41
[Abstract]:A large number of diabase veins have been developed in the southern ore belt of Sajek Copper Mine. In this paper, geochemistry of diabase samples collected from surface and boreholes has been studied. The results showed that the range of, w (TFe2O3 (total iron) and w (Ti O2 (44.78%) of rock w (Si O 2 were 7.19% 10.67% and 2.28% 2.73, respectively. The evolution trend of alkali-rich and silicon-poor belongs to the high-titanium series of pyroxenite. Rare earth elements and trace elements are similar to OIB. The petrogeochemical characteristics of Sajiek diabase are very similar to those of Tuoyun basin basalt. They should be homologous products and formed in the intraplate extensional tectonic environment, which may be related to lithospheric desilting. Controlled by the long-range effects of the Indian-Asian continental collision.
【作者单位】: 北京矿产地质研究院;中国地质大学(北京)地球科学与资源学院;昆明理工大学国土资源工程学院;
【基金】:国土资源部公益性项目(201511016-2) “十二五”国家科技支撑项目(2015BAB05B04-03)
【分类号】:P618.41
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