| 东天山伊吾地区早石炭世火山岩地球化学特征及其构造意义 |
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| 引用本文： | 谯文浪,刘凌云,刘贞才.东天山伊吾地区早石炭世火山岩地球化学特征及其构造意义[J].贵州地质,2011,28(1):35-41. |
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| 作者姓名： | 谯文浪 刘凌云 刘贞才 |
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| 作者单位： | 1. 贵州省地质调查院,贵阳,550005
2. 贵州省地质调查院,贵阳550005;贵州大学,贵阳550003 |
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| 摘 要： | 通过对东天山伊吾马依当地区早石炭世火山岩分布、成因与构造环境关系的调查研究,查明了该时期火山岩相从次火山相-爆发相-喷溢相-火山沉积相的分布特点;火山岩组合主要为一套岛弧相的中基性-中酸性火山碎屑岩、火山熔岩及火山沉积岩.结合该区火山岩地球化学特征及沉积岩特征综合研究认为:研究区早石炭世早期处于大陆裂谷向大洋裂谷转变的...
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| 关 键 词： | 火山岩成因 地球化学 构造环境 早石炭世 伊吾地区 新疆 |
Geochemical Characteristics and Its Structural Significance of Early Carboniferous Volcanic Rock in Yiwu Area, Eastern Tianshan |
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| QIAO Wen - lang,LIU Lin - yun,LIU Zhen - cai.Geochemical Characteristics and Its Structural Significance of Early Carboniferous Volcanic Rock in Yiwu Area, Eastern Tianshan[J].Guizhou Geology,2011,28(1):35-41. |
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| Authors: | QIAO Wen - lang LIU Lin - yun LIU Zhen - cai |
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| Institution: | 1.Guizhou Academy of Geologic Survey,Guiyang 550005,Guizhou,China;2.Guizhou University,Guiyang 550003,Guizhou,China) |
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| Abstract: | By investigating the early Carboniferous volcanic rock distribution,causation and structural environment relation in Mayidang area,it shows the distribution character of volcanic lithofacies from secondary volcanic facies-explosive phase-effusive facies to volcanic sedimentary facies in this period,the volcanic associations mainly is a series of island arc facies intermediate-intermediate acidic volcanic clastic rock..According to the rock and fossil characters of Tuosibasitao formation,it＇s known that Early Carboniferous in the target area is in the dynamics environment of continental rift transfer into oceanic rift.In the middle and late period of Early Carboniferous,the tectonic movement in the target area,transferred from stretching mechanic into squeezing mechanic,it＇s belong to island arc volcanic rock.So it＇s thought that the Early Carboniferous tectonic evaluation is a ＇open and close＇ movement in the target area.It＇s the first time that the tectonic evaluation mode is carried out,it＇s not only improve the geologic studying degree,but also afford ore-controlling structure information in the target area. |
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| Keywords: | Volcanic rock causation geochemistry structural environment Early Carboniferous Yiwu area Xinjiang |
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