| 西天山古元古代木札尔特岩群地质特征及时代厘定 |
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| 引用本文： | 于海峰,王福君,潘明臣,梁有为,郭洪方,王志军.西天山古元古代木札尔特岩群地质特征及时代厘定[J].新疆地质,2011,29(1):20-25. |
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| 作者姓名： | 于海峰 王福君 潘明臣 梁有为 郭洪方 王志军 |
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| 作者单位： | 辽宁省地质勘查院,辽宁,大连,116100 |
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| 基金项目： | 新疆特克斯县哈拉温克尔一带1:5万区域地质矿产调查项目，新疆昭苏县喀腊苏一带1:5万区域地质矿产调查项目 |
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| 摘 要： | 西天山木札尔特岩群发育于塔里木原始古陆台内毗邻陆缘活动带,为一套角闪岩相中深变质岩系,主要岩石组合为变粒岩-浅粒岩-片麻岩-斜长角闪岩-大理岩等,局部受韧性变形改造形成各类糜棱岩系,原岩为中基性火山熔岩-火山碎屑岩-火山碎屑沉积岩夹碳酸盐岩建造.由于缺少古生物化石,其地层时代主要依据区域地层对比和同位素年代学数据进行确定.笔者应用钐钕全岩等时线定年法,在该岩群斜长角闪岩中获得(1966±93)Ma的同位素年龄,这是迄今为止,西天山范围内该岩群内获得的最古老同位素年龄,代表了其成岩年龄.据国际地层表(2000)关于古元古界造山系2 050~1 800 Ma的划分方案,笔者最终将西天山木札尔特岩群成岩时代厘定为古元古代造山纪.
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| 关 键 词： | 西天山 古元古代 木札尔特岩群 地质特征 时代厘定 |
GEOLOGICAL CHARACTERISTICS AND AGES ASSURANCE OF THE MUZHAERTE GROUP COMPLEX OF PALAEOPROTE ROZOIC IN WESTERN TIANSHAN MOUNTAINS |
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| YU Hai-feng,WANG Fu-jun,PAN Ming-chen,LIANG You-wei,GUO Hong-fang,WANG Zhi-jun.GEOLOGICAL CHARACTERISTICS AND AGES ASSURANCE OF THE MUZHAERTE GROUP COMPLEX OF PALAEOPROTE ROZOIC IN WESTERN TIANSHAN MOUNTAINS[J].Xinjiang Geology,2011,29(1):20-25. |
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| Authors: | YU Hai-feng WANG Fu-jun PAN Ming-chen LIANG You-wei GUO Hong-fang WANG Zhi-jun |
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| Institution: | YU Hai-feng,WANG Fu-jun,PAN Ming-chen,LIANG You-wei,GUO Hong-fang,WANG Zhi-jun(Liaoning Institute of Geological Exploration,Dalian,Liaoning,116100,China) |
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| Abstract: | The Muzhaerte Group Complex in western Tianshan Mountains formed in the mobile belt of the Tarim proto-continent margin.It's main rock group is leptynite-leptite-gneiss-amphibolite-marble etc.which passed with hornblend-phase regional metamorphism and all kinds of mylonite which passed with ductile shear deformation in the strain localization region.The protolish of Muzhaerte Group Complex is intermediate-busic pyroclastic lava-pyrolastic rock-pyroclastic sedimentary rock via carbonate rock formation.Becaus... |
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| Keywords: | Western Tianshan Mountains Palaeoproterozoic Muzhaerte Group Complex Geological characteristics Age assurance |
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