卡拉麦里金矿带中金矿床赋存于蛇绿岩或火山碎屑-沉积建造中,矿化类型以石英脉型为主。通过研究粉砂岩等容矿岩石的地球化学特征,判定了其沉积环境为大陆岛弧环境;蛇绿岩建造中火山岩赋存于火山碎屑-沉积建造中,容矿岩系的沉积环境也从围岩的角度证实了这些火山岩形成于岛弧环境,也论证了它们可能与该环境下的洋脊俯冲活动有关;与蛇绿岩建造中火山岩具成因联系的含金石英脉,可能为岛弧环境下与洋脊俯冲相关热液活动的反映。
The gold deposits are hosted in ophiolite or volcanic-sedimentary formations in the Kalamaili gold belt .Its main mineralization is quartz-vein type .By studying the geochemical characteristics of host rocks such as siltstone ,it is concluded that the sedimentary setting of volcanic-sedimentary is continental island arc .The volcanic rocks of ophiolite formation are hosted in volcanic-sedimentary formations ,the sedimentary setting of host rocks can reassure that these vol -canic rocks were formed in continental island arc setting ,and it also inferred that this volcanic magmatism may be related to ridge subduction .The gold-bearing quartz vein that shared genetic relationship with the volcanic rocks in ophiolite for -mations ,might be the reflection of the hydrothermal activities about ridge subduction under the continental island arc set -ting.
参考文献
[1] | 陈仁义.新疆东准噶尔铜金矿床类型及其时空分布[J].矿床地质,1995(03):228-234. |
[2] | 杨富全,吴海.新疆东准噶尔金矿成因类型及地质特征[J].地质找矿论丛,2000(01):39-45. |
[3] | 李锦轶.新疆东部新元古代晚期和古生代构造格局及其演变[J].地质论评,2004(03):304-322. |
[4] | 李锦轶,何国琦,徐新,李华芹,孙桂华,杨天南,高立明,朱志新.新疆北部及邻区地壳构造格架及其形成过程的初步探讨[J].地质学报,2006(01):148-168. |
[5] | Wang ZH;Sun S;Li JL et al.Paleozoic tectonic evolution of the northern Xinjiang,China:Geochemical and geochronological constrains from the ophiolites[J].TECTONICS,2003,22(02):1014-1029. |
[6] | 刘希军,许继峰,侯青叶,白正华,雷敏.新疆东准噶尔克拉麦里蛇绿岩地球化学:洋脊俯冲的产物[J].岩石学报,2007(07):1591-1602. |
[7] | Bhatia M R .Plate tectonics and geochemical compositon of sand-stones[J].Journal of Geology,1983,91:611-627. |
[8] | Bhatia M R;Crook K A W .Trace element characteristics of graywacks and tectonic discrimination of sedimentary basins.Contrib.Mineral[J].Petrol,1986,92:181-193. |
[9] | 赵磊,季建清,徐芹芹,龚俊峰,涂继耀,王金铎.新疆北部卡拉麦里晚古生代走滑构造及其叠加变形序次[J].岩石学报,2012(07):2257-2268. |
[10] | 路彦明 .新疆东准双泉地区金矿构造控矿规律及勘查找矿方向[D].中国地质大学(北京),2008. |
[11] | 李华芹;陈富文.中国新疆区域成矿作用年代学[M].北京:地质出版社,2004 |
[12] | 汪帮耀,姜常义,李永军,吴宏恩.新疆卡拉麦里姜巴斯套组火山岩地球化学特征与构造意义[J].地球科学与环境学报,2011(03):237-245. |
[13] | 韩宝福,季建清,宋彪,陈立辉,张磊.新疆准噶尔晚古生代陆壳垂向生长(Ⅰ)--后碰撞深成岩浆活动的时限[J].岩石学报,2006(05):1077-1086. |
[14] | 杨宝凯,李永军,闫存兴,刘晓宇,吴宏恩,杨高学.东准卡拉麦里地区苏吉泉一带黑山头组的厘定[J].新疆地质,2011(01):13-16. |
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