新疆东准琼河坝地区斑岩矿床的找矿潜力
|
摘要
新疆东准琼河坝地区,位于阿尔曼太蛇绿岩带和卡拉麦里蛇绿岩带之间,是晚古生代火山岩系叠置发育在早古生代岛弧之上的复合岛弧带。近年来先后发现了蒙西、和尔赛、铜华岭、拉伊克勒克等多个斑岩型铜多金属矿床。通过对其矿床地质特征与成岩成矿年龄的研究,认为琼河坝地区构成斑岩矿床的岩体是在早古生代晚期岛弧发育后期碰撞造山过程中形成的;上志留到下泥盆世是区内重要的斑岩型铜多金属矿成矿期;且琼河坝地区具有进一步寻找斑岩矿床的巨大潜力。
Qiongheba area,located between the Altman ophiolite belt and the Kalamaili ophiolite zone,is the complex island arc,above which the Late Paleozoic volcanic rocks stacked on the early Paleozoic arc. In recent years has found a number of porphyry type deposits,such as Mengxi,Heersai,Tonghualing,Layikeleke and so on. Through the study of their geological characteristics and the ages of the rock and the mineralization,it is concluded that the plutons in Qiongheba aera are formed during the late collisional orogeny in the late Paleozoic island arc; these age characteristics further evidenced that there is a magma-hrdrothermal mineralization event in this area during the Upper Silurian and Lower Devonian; all these indicate that Qiongheba area has great prospection potential.
Qiongheba area,located between the Altman ophiolite belt and the Kalamaili ophiolite zone,is the complex island arc,above which the Late Paleozoic volcanic rocks stacked on the early Paleozoic arc. In recent years has found a number of porphyry type deposits,such as Mengxi,Heersai,Tonghualing,Layikeleke and so on. Through the study of their geological characteristics and the ages of the rock and the mineralization,it is concluded that the plutons in Qiongheba aera are formed during the late collisional orogeny in the late Paleozoic island arc; these age characteristics further evidenced that there is a magma-hrdrothermal mineralization event in this area during the Upper Silurian and Lower Devonian; all these indicate that Qiongheba area has great prospection potential.
引文
[1]董连慧,徐兴旺,屈迅,等.初论环准嘎尔斑岩铜矿带的地质构造背景与形成机制[J].岩石学报,2009,25(04):713-737.
[2]董连慧,屈迅,朱志新,等.新疆大地构造演化与成矿[J].新疆地质,2010,28(04):351-357.
[3]李锦轶,何国琦,徐新,等.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.
[4]张永,梁广林,屈迅,等.东准嘎尔琼河坝岛弧早古生代岩浆活动的锆石U-Pb年龄和Hf同位素证据[J].岩石学报,2010,26(08):2389-2398.
[5]王登红,李华芹,应立娟,等.新疆伊吾琼河坝地区铜、金矿成矿时代及其找矿前景[J].矿床地质,2009,28(01):73-82.
[6]李高峰.新疆东准拉伊克勒克斑岩矿床的蚀变特征与成矿作用关系研究[D]:合肥工业大学,2015.
[7]杜世俊,屈迅,邓刚,等.东准噶尔和尔赛斑岩铜矿成岩成矿时代与形成的构造背景[J].岩石学报,2010,26(10):2981-2996.
[8]郭丽爽,张锐,刘玉琳,等.新疆东准嘎尔铜华岭中酸性侵入体锆石U-Pb年代学研究[J].北京大学学报(自然科学版)网络版,2009(01):22-27.
[9]李高峰,孟贵祥,吴建,等.新疆东准乌须克劳格岩体LA-ICP-MS锆石U-Pb年龄、Hf同位素特征及其地质意义[J].地质通报,2016(07):1170-8113.
[10]吕博,孟贵祥,杨岳清,等.新疆拉伊克勒克隐伏斑岩矿床的发现、Re-Os同位素定年及地质意义[J].岩石学报,2014,30(04):1168-1178.
[11]屈迅,徐兴旺,梁广林,等.蒙西斑岩型铜钼矿地质地球化学特征及其对东准嘎尔琼河坝岩浆岛弧构造属性的制约[J].岩石学报,2009,25(04):765-776.
[2]董连慧,屈迅,朱志新,等.新疆大地构造演化与成矿[J].新疆地质,2010,28(04):351-357.
[3]李锦轶,何国琦,徐新,等.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.
[4]张永,梁广林,屈迅,等.东准嘎尔琼河坝岛弧早古生代岩浆活动的锆石U-Pb年龄和Hf同位素证据[J].岩石学报,2010,26(08):2389-2398.
[5]王登红,李华芹,应立娟,等.新疆伊吾琼河坝地区铜、金矿成矿时代及其找矿前景[J].矿床地质,2009,28(01):73-82.
[6]李高峰.新疆东准拉伊克勒克斑岩矿床的蚀变特征与成矿作用关系研究[D]:合肥工业大学,2015.
[7]杜世俊,屈迅,邓刚,等.东准噶尔和尔赛斑岩铜矿成岩成矿时代与形成的构造背景[J].岩石学报,2010,26(10):2981-2996.
[8]郭丽爽,张锐,刘玉琳,等.新疆东准嘎尔铜华岭中酸性侵入体锆石U-Pb年代学研究[J].北京大学学报(自然科学版)网络版,2009(01):22-27.
[9]李高峰,孟贵祥,吴建,等.新疆东准乌须克劳格岩体LA-ICP-MS锆石U-Pb年龄、Hf同位素特征及其地质意义[J].地质通报,2016(07):1170-8113.
[10]吕博,孟贵祥,杨岳清,等.新疆拉伊克勒克隐伏斑岩矿床的发现、Re-Os同位素定年及地质意义[J].岩石学报,2014,30(04):1168-1178.
[11]屈迅,徐兴旺,梁广林,等.蒙西斑岩型铜钼矿地质地球化学特征及其对东准嘎尔琼河坝岩浆岛弧构造属性的制约[J].岩石学报,2009,25(04):765-776.