| 西天山特克斯县东南中元古代特克斯岩群变质砂岩构造背景探讨 |
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| 引用本文： | 代文军,雒晓刚,马小云.西天山特克斯县东南中元古代特克斯岩群变质砂岩构造背景探讨[J].甘肃地质学报,2011(2):20-28. |
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| 作者姓名： | 代文军 雒晓刚 马小云 |
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| 作者单位： | 甘肃省地矿局第三地勘院; |
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| 基金项目： | 新疆特克斯县科克苏南一带1:5万区域地质矿产调查项目(2003年新疆维吾尔自治区项目办招标项目),项目编号:XJDZ2003-12 |
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| 摘 要： | 西天山特克斯县大地构造位于天山造山带西段—伊犁地块南缘,处于伊犁—伊赛克湖微板块的伊宁中央地块中。中元古界长城系特克斯岩群,由泊仑干布拉克岩组、莫合西萨依岩组和珠玛汗萨依岩组组成。岩石总体上以中等的SiO2含量、较高的（TFeO＋MgO）值及低的CaO、Na2O和中等含量的TiO2为特征。稀土元素球粒陨石标准化曲线以轻...
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| 关 键 词： | 变质砂岩 地球化学 构造环境 特克斯岩群 长城纪 特克斯县 新疆 |
TECTONIC SETTINGS OF METASANDSTONE OF MESO-PROTEROZOIC TEX TERRAIN IN THE SOUTHEAST TEX COUNTY OF WEST TIANSHAN |
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| DAI Wen-jun,LUO Xiao-gang and MA Xiao-yun.TECTONIC SETTINGS OF METASANDSTONE OF MESO-PROTEROZOIC TEX TERRAIN IN THE SOUTHEAST TEX COUNTY OF WEST TIANSHAN[J].Acta Geologica Gansu,2011(2):20-28. |
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| Authors: | DAI Wen-jun LUO Xiao-gang and MA Xiao-yun |
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| Institution: | DAI Wen-jun,LUO Xiao-gang,MA Xiao-yun(No.3 Geology and Exploration Team,Gansu Provincial Bureau of Geology and Mineral Exploration and Development,Lanzhou 730050,China) |
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| Abstract: | Tectonically,Tex County is situated in the margin of Yili block within Yining central block of Yili-Yisaikehu microplate which belongs to the west section of Tianshan Orogenic Belt.Meso-Proterozoic Chancheng System in Tex is composed of Bolunganbulake,Mohexisayi and Zhumahansayi Rock Group.The rock is characterized by middle content of SiO2 and TiO2,high of（TFeO＋MgO） and lower of CaO、Na2O.The chondrite-normalized patterns of REE show that HREE are concentrated,HREE flat,negative anomaly of Eu prominence.The source of main and trace elements is not single.On the basis of the fore-research,it is provided that Tex Rock Group was deposited in the basin at passive continental margin,and developed in rift environment of Atlantic continental margin. |
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| Keywords: | metasandstone geochemistry structure environment Tex Rock Group Chengcheng System Xinjiang |
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