Volcanic Rocks Assemblage and Eruption Sequence of Dahalajunshan Formation in Wusunshan Region, Western Tianshan
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摘要: 新疆西天山地区伊犁地块南北缘以及地块内部广泛分布着大哈拉军山组火山岩系。笔者在前人研究基础上，以乌孙山一带出露的大哈拉军山组火山岩为主要研究对象，通过路线地质调查、剖面测制和岩相学等方面的系统研究，厘定了大哈拉军山组的岩石组合、地层序列及其变化规律。大哈拉军山组火山岩总体由玄武岩、安山岩、英安岩、流纹岩，以及中酸性火山碎屑岩组成。乌孙山-塔斯巴山地区以安山岩为主，占50%，玄武岩、英安岩和流纹岩比例相近。火山岩地层喷发序列上，乌孙山-塔斯巴山一带底部为中酸性火山岩，向上为中基性与中酸性火山岩的交替喷发，可划分出5~7个喷发旋回，火山活动整体上具有裂隙式-中心式喷发的特征。Abstract: The volcanic rocks of Dahalajunshan Formation are widespread in the Western Tianshan Mountain, which are mainly exposed at north and south edges and inside of Yili Block. On the basis of previous work, the volcanic rocks of Dahalajunshan Formation exposed in Wusunshan region have been taken as studying objects in this paper. By systematically field geology, profile and petrography, the rock association, stratigraphic sequence and its variation have been determined. The volcanic rocks of Dahalajunshan Formation are overall composed of basalt, andesite, dacite, rhyolite and intermediate-acid pyroclastic rock. At the south part of Yili block, the volcanic rocks in Wusunshan-Tasibashan area are mainly andesite (up to 50%), with a similar proportion of basalt, dacite and rhyolite. In the aspects of lava's eruption sequence, the acid magma was firstly erupted in Wusunshan-Tasibashan area, and then basic and acid magma were erupted in turn, which can be divided into 5~7 eruption cycles, with a character of fissure-central eruption.
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Keywords:
- Dahalajunshan Formation /
- rock association /
- eruption sequence /
- Wusunshan /
- Western Tianshan
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安芳,朱永峰. 西北天山吐拉苏盆地火山岩SHRIMP年代学和微量元素地球化学研究[J]. 岩石学报,2008, 24(12):2741-2748. AN Fang,ZHU Yongfeng. Study on trace elements geochemistry and SHRIMP chronology of volcanic rocks in Tulasu Basin, Northwest Tianshan[J]. Acta Petrologica Sinica,2008,24(12):2741-2748.
车自成,刘良,刘洪福,等. 论伊犁古裂谷. 岩石学报,1996,12(3):478-490. CHE Zicheng,LIU Liang,LIU Hongfu,et al. Review on the Ancient Yili Rift,Xinjiang,China[J]. Acta Petrologica Sinica,1996,12(3):478-490.
高俊,钱青,龙灵利,等. 西天山的增生造山过程[J]. 地质通报,2009,28(12):1804-1816. GAO Jun,QIAN Qing,LONG Lingli,et al. Accretionaryorogenic process of Western Tianshan,China[J]. Geological Bulletion of China,2009,28(12):1804-1816.
李甘雨.伊宁地块石炭纪火山岩地球化学特征及岩石成因[D].西安:长安大学,2017. LI Ganyu. The geochemical characteristics and petrogenesis of Carboniferous volcanic rocks in Yining Massif[D]. Xi'an:Chang'an University,2017.
李永军,李注苍,佟丽莉,等. 论天山古洋盆关闭的地址时限-来自伊犁地块石炭系的新证据[J]. 2010, 26(10):2905-2912. LI Yongjun,LI Zhucang,TONG Lili,et al. Revisit the constraintson the closure of the Tianshan ancient oceanic basin:New evidence from Yining block of the Carboniferous[J]. Acta Petrologica Sinica,2010,26(10):2905-2912.
李钊. 伊宁地块阿吾拉勒-巩乃斯地区大哈拉军山组与伊什基里克组火山岩对比研究[D].西安:长安大学, 2016. LI Zhao. Comparative study on the volcanic rocks ofDahalajunshan Formation and Yishijilike Formation,Awulale-Gongnaisi area,Yining Block,Xinjiang[D].Xi'an:Chang'an University,2016.
荆德龙. 西天山阿吾拉勒成矿带铁矿成矿作用与成矿规律研究[D].西安:长安大学,2016. JING Delong. Mineralization andMetallogenicRegulartiy of AwulaleMetallogenic Belt in Western TianshanMountian, Northwest China[D].Xi'an:Chang'an University,2016.
钱青,高俊,熊贤明,等. 西天山昭苏北部石炭纪火山岩的地球化学特征、成因及形成环境[J]. 岩石学报,2006,22(5):1307-1323. QIAN Qing,GAO Jun,XIONG Xianming,et al. Petrogenesis and tectonic settings of Carboniferous volcanic rocks from northZhaosu,western Tianshan Mountains:constrains from petrology and geochemistry[J]. Acta Petrologica Sinica,2006,22(5):1307-1323.
茹艳娇.西天山大哈拉军山组火山岩地层序列、岩石成因与构造环境[D].西安:长安大学,2012. RU Yanjiao. The Stratigraphic Sequanence, Petrogenesis and Tectonic Setting of the Volcanic Rocks of the Dahalajunshan Formation, Western Tianshan Mountain, China[D]. Xi'an:Chang'an University,2012.
汪帮耀,姜常义. 西天山查岗诺尔铁矿区石炭纪火山岩地球化学特征及岩石成因[J]. 地质科技情报,2011,30(6):18-27. WANG Bangyao,JIANG Changyi. Petrogenesis and Geochemical Characteristics of Carboniferous Volcanic Rocks of Chaganur Iron Deposit Area in Western Tianshan, Xinjiang[J]. Geological Science and Technology Information,2011,30(6):18-27.
王博,舒良树,CLUZEL D,等. 新疆伊犁北部石炭纪火山岩地球化学特征及其地质意义[J].中国地质,2006,33(3):498-508. WANG Bo,SHU Liangshu,CLUZEL D,et al.Geochemical characteristics and tectonic significance of Carboniferous volcanicrocks in the northernpar t of the Ili Block, Xinjiang[J]. Geology in China,2006,33(3):498-508.
王洪亮,徐学义,何世平,等.中国天山及邻区地质图[M]. 北京:地质出版社,2008. WANG Hongliang,XU Xueyi,HE Shiping,et al. Tianshan and its adjacent area geological map,Chinese[M]. Beijing:Geological Publishing House,2008.
夏林圻,夏祖春,徐学义,等. 天山石炭纪大火成岩省与地幔柱[J]. 地质通报,2004,23(9-10):903-910. XIA Linqi,XIA Zuchun,XU Xueyi,et al. Carboniferous Tianshan igneous megaprovince and mantle plume[J]. Geological Bulletin of China,2004,23(9-10):903-910.
夏林圻,李向民,夏祖春,等. 天山石炭纪-二叠纪大火成岩省裂谷火山作用与地幔柱[J].西北地质,2006,39(1):1-49. XIA Linqi,LI Xiangming,XIA Zuchun,et al. Carboniferous-Permian Rift-related and mantle plume in the Tianshan, Northwestern China[J]. Northwestern Geology,2006,39(1):1-49.
新疆维吾尔自治区地质矿产局. 1:20万昭苏幅区域地质调查报告[R]. 乌鲁木齐:新疆维吾尔自治区地质矿产局,1978. Bureau of Geology and Mineral Resources of Xinjiang UygurAutomomousRegion.The Report of Regional Geological Survey of Zhaosu Sheet at the Scale of 1:20000[R]. Urumqi:Bureau of Geology and Mineral Resources of Xinjiang Uygur Automomous Region,1978.
张振亮,高永伟,冯选洁,等. 火山岩型铁矿研究现状及发展方向[J]. 西北地质,2018,51(2):116-125. ZHANG Zhenliang,GAO Yongwei,FENG Xuanjie,et al. A Review on the Volcanite-type Iron Deposit[J]. Northwestern Geology,2018,51(2):116-125.
朱永峰,周晶,宋彪,等. 新疆"大哈拉军山组"火山岩形成时代问题及其解题方案[J]. 中国地质,2006,33 (03):0487-0497. ZHU Yongfeng,ZHOU Jing,SONG Biao,et al. Age of the Dahalajunshan Formation in Xinjiang and its disintegration[J]. Geology in China,2006,33(03):0487-0497.
周煜杰,李永军,杨高学,等. 西天山昭苏阿登套地区大哈拉军山组火山岩LA-ICP-MS锆石U-Pb年龄及其意义[J]. 西北地质,2017,50(4):1-8. ZHOU Yujie,LI Yongjun,YANG Gaoxue,et al. Ziron U-Pb Dating of Volcanic Rocks from Dahalajunshan Formation in Adengtao Area of Zhaosu County,West Tianshan and its Geological Implication[J]. Northwestern Geology,2017,50(4):1-8.
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