天然气地球化学

准噶尔盆地滴西地区石炭系火山岩地球化学特征

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  • (1.甘肃省油气资源研究重点实验室/中国科学院油气资源研究重点实验室,甘肃 兰州 730000;
    2.中国科学院大学,北京 100049;
    3.新疆油田分公司石西油田作业区,新疆 克拉玛依 834000)
张顺存(1973-),男,甘肃定西人,副研究员,博士,主要从事储层地质学与储层地球化学研究. E-mail:zhangshuncun@126.com.

收稿日期: 2015-05-21

  修回日期: 2015-11-09

  网络出版日期: 2015-11-20

基金资助

国家科技重大专项(编号:2011ZX05008-003-40;2011ZX05008-002-52);甘肃省重点实验室专项(编号:1309RTSA041)联合资助.

Geochemical Characteristics of the Carboniferous Volcanic Rocks in Dixi Area,Junggar Basin

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  • (1.Key Laboratory of Petroleum Resources,Gansu Province/ Key Laboratory of Petroleum Resources Research,
    Institute of Geology and Geophysics,Chinese Academy of Sciences,Lanzhou 730000,China;
    2.University of Chinese Academy of Sciences,Beijing 100049,China;
    3.Shixi Operation District,Xinjiang Oilfield Company,PetroChina,Karamay 834000,China)

Received date: 2015-05-21

  Revised date: 2015-11-09

  Online published: 2015-11-20

摘要

准噶尔盆地滴西地区石炭系岩石类型复杂,露头样品难以揭示其全部特征.在岩心观察、薄片鉴定、测井及录井资料分析基础上,结合野外露头样品和井下岩心样品的地球化学实验分析,查明了该区石炭系巴塔玛依内山组火山岩的岩石学特征、地球化学特征。岩心观察、薄片鉴定显示石炭系主要包括凝灰岩、火山角砾岩等火山碎屑岩,玄武岩、安山岩、流纹岩等火山岩及花岗岩、花岗斑岩等侵入岩;火山岩的地球化学分析显示该区火山岩岩石类型复杂,以钙碱性系列为主、碱钙性序列为辅;野外样品与井下岩心样品均以酸性为主、中性为辅。在充分考虑火山岩喷发序列、火山岩岩石学特征的基础上,通过主量和微量元素的分析认为:无论是野外样品所在的克拉美丽山前地区,还是井下岩心样品所在的滴西地区,石炭系巴塔玛依内山组火山岩在构造背景上应属于后碰撞环境。

本文引用格式

张顺存,牛斌,汪学华,加玉锋,张生银 . 准噶尔盆地滴西地区石炭系火山岩地球化学特征[J]. 天然气地球科学, 2015 , 26(S2) : 138 -147 . DOI: 10.11764/j.issn.1672-1926.2015.S2.0138

Abstract

The types of Carboniferous volcanic rocks in Dixi area,Junggar Basin are so complicated that it is difficult to reveal the detailed characteristics by limited number of outcrop samples.The petrology and geochemistry of volcanic rocks in this region were discussed through analysis of core observation,thin section identification and well logging,combined with core samples and outcrop samples.Tuff,basalt,andesite,granite,volcanic breccia rocks are identified by core observation and thin section.Geochemical analysis revealed that the volcanic rocks mainly consist of calc-alkaline series,and alkaline-calc series as the auxiliary;Core samples and outcrop samples mainly consist of acid rock,and intermediate rock as the auxiliary.Based on petrology,rock volcano eruption sequence on the volcano rock,as well as the analysis of trace elements and major elements,it could be concluded that the volcanic rocks from Carboniferous Batamayineishan Formation in Dixi area and Kelameili area should belong to post-collisional tectonic setting.

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