西藏雄巴地区中新世雄巴组砂岩地球化学特征及对物源区、构造背景的指示
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  • 英文篇名:Geochemical Characteristic of the Xungba Formation Sandstones in the Xungba Basin,Tibet,and its Constraints on Provenance and Tectonic Setting
  • 作者:王丛山 ; 陈文西 ; 单福龙
  • 英文作者:WANG Congshan;CHEN Wenxi;SHAN Fulong;Institute of Mineral Resources,Chinese Academy of Geological Science;Shandong University of Science and Technology,College of geological science and engineering;Key Laboratory of Saline Lake Resources and Environment,Ministry of Land Resources;
  • 关键词:地球化学 ; 物源制约 ; 构造背景 ; 砂岩 ; 雄巴组 ; 西藏
  • 英文关键词:geochemistry;;provenance constraints;;tectonic setting;;sandstone;;Xungba Formation;;Tibet
  • 中文刊名:DZXE
  • 英文刊名:Acta Geologica Sinica
  • 机构:中国地质科学院矿产资源研究所;山东科技大学地质科学与工程学院;国土资源部盐湖资源与环境重点实验室;
  • 出版日期:2016-06-15
  • 出版单位:地质学报
  • 年:2016
  • 期:v.90
  • 基金:中国地质调查局地质大调查项目(编号N1016)资助成果
  • 语种:中文;
  • 页:DZXE201606011
  • 页数:13
  • CN:06
  • ISSN:11-1951/P
  • 分类号:159-171
摘要
雄巴地区位于阿尔卑斯-喜马拉雅构造-火山成矿带冈底斯硼矿成矿远景区,中新世经喜山运动二幕形成杂色火山岩和碎屑沉积岩交互的一套地层。本文对雄巴地区雄巴组碎屑岩元素地球化学特征进行研究。研究发现,雄巴地区雄巴组碎屑岩碎屑颗粒呈棱角、次棱角状,具有近源沉积特征。碎屑砂岩具有中等SiO_2、K_2O,高Na_2O,低TFe_2O_3、MgO的特点,说明源岩主要为长英质岩石。样品化学蚀变指数(CIA)平均为57.41,化学风化指数(CIW)平均为66.81,中等偏高,表明源区源岩经历了低-中等程度的风化。稀土元素配分图及痕量元素蛛网图显示轻稀土富集、重稀土亏损,轻重稀土分馏明显,负Eu异常[(La/Sm)N平均为4.28、(La/Yb)N平均为27.30、∑LREE/∑HREE平均为8.25、(Gd/Yb)N平均为2.89、Eu/Eu*平均值为0.69]。研究区沉积构造背景为活动大陆边缘,偶有样品偏向岛弧环境和被动大陆边缘;主要物源为上地壳英安岩型、长英质火成物源区,有极少安山质岩石和古老上地壳物质混入。根据雄巴地区区域地质背景资料,结合前人研究成果,本论文认为雄巴组碎屑砂岩原始物源区主要是雄巴盆地西北方向的火山机构分布带,同时论证了研究区中新世所经历的构造-火山-沉积环境特点,综合信息显示研究区是有利硼矿成矿远景区。
        The Xungba Basin,located in the Gangdese boron-bearing mineralization region of the AlpineHimalayan tectonic-volcanic metallogenic belt,contains a set of variegated volcanic rocks and clastic sedimentary rocks resulting from the second play of the Himalayan movement in the Miocene.This study carried out element geochemical analysis for clastic sedimentary rocks of the Xungba Formation.The results show that clastic sedimentary rocks of the Xungba Formation occur as angular to sub-angular,indicating aproximal deposition.The clastic sedimentary rocks are characterized by medium SiO_2,high Na_2O,and low TFe_2O_3 and MaO,indicating they are felsic rocks in source rocks.The Chemical Index of Alteration(CIA)is 57.41 in average,and Chemical Index of Weathering(CIW)is high around 66.81,illustrating source rocks underwent weak to middle degree of chemical weathering.Chondrite-normalized REE patterns and trace elements spider diagrams display LREE-rich but HREE-depletion,with Eu negative anomaly,an average(La/Sm)N of 4.28、(La/Yb)Nof around 27.3,∑LREE/∑HREE of 8.25,(Gd/Yb)Nof 2.89 and Eu/Eu*of 0.69.Our study indicates that sedimentary structure occurs in an active continental margin with several samples found likely in island-arc environment and passive continental margin.The rocks derived mainly from felsic igneous rocks of upper crust,with a minor addition of andesitic rocks and ancient crustal material.Based on the regional geological background and previous research result,this study suggests that the source rocks of the Xiongba Formation clastic sandstone were distributed mainly around the volcanic edifice zonation in northwest of the Xungba Basin,and confirms that the study area is also characterized by tectonic-volcanic sedimentary setting.Therefore,the comprehensive information reveals that the study area is a favorable metallogenic prospect area.
引文
Bai Daoyuan,Zhou Liang,Wang Xianhui,Zhang Xiaoyang,Ma Tieqiu.2007.Geochemistry of Nanhuan-Cambrian sandstones in Southeastern Huan,and its constrains on Neoproterozoic-Early Paleozoic tectonic setting of South China.In Chinese with English abstract.Acta Geologica Sinica,81(6):755~771.
    Bao Peisheng,Xiao Xuchang,Su Li.2006.Geochemical characteristics of the Potassic volcanics in the Northwestern Tibet Plateau and Its implications.In Chinese with English abstract.Acta Geologica Sinica,80(10):1578~1587.
    Bhatia M R.1985.Rare earth element geochemistry of Australian Paleozoic graywackes and mudrocks:provenance and tectonic control.Sedimentary Geology,45:97~113.
    Bhatia M R,Keith A W.1986.Trace element characteristics of graywackes and tectonic setting discrimination of sedimentary basins.Mineralogy and Petrology,92:181~193.
    Cai Guanqiang,Guo Feng,Liu Xiantai,Sui Shuling.2006.Clastic sediment geochemistry:implications for provenance and tectonic setting and its influential factors.In Chinese with English abstract.Earth and Environment,34(4):75~83.
    Chen Xiaojun,Luo Shunshe,Li Jiahua.2011.Clasctic rock geochemical features of Changlongshan Formation in Qingbaikou System within Xuanlong Depression.In Chinese with English abstract.Geology in China,38(6):1477~1484.
    Chen Xiaolin,Hu Xiangzhi.2010.Volcanic facies and volcanic edifice in Paleogene Period at Xiongba-Delai District,Tibet.In Chinese with English abstract.Resources Environment&Engineering,24(6):653~658.
    Cullers R L.2000.The geochemistry of shales,siltstones and sandstones of Pennsylvanian-Permian age,Colorado,USA:implications for provenance and metamorphic studies.Lithos,51:181~203.
    Fang Guoqing.1993.K2O/(Na2O+CaO)-SiO2/Al2O3:A diagram for determining the plate tectonic setting of flysh.In Chinese with English abstract.Northwest Geoscience,14(1):121~25.
    Floyd P A,Winchester J A,Park R G.1989.Geochemistry and tectonic setting of Lewisian clastic metasediments from the Early Proterozoic Loch Maree Group of Gairloch.NW Scotland Precambrian Research,45:203~214.
    Floyd P A,C Helvaci,Mittwede S K.1998.Geochemical discrimination of volcanic rocks associated with borate deposits:an exploration tool?Journal of Geochemical Exploration,60:185~205.
    Gengtao.2007.The achievements of 1∶1000000regional gravity survey in Shiquanhe-Kangxiwa area of Qinghai-Tibet Plateau.In Chinese with English abstract.Geophysical&geochemical exploration.31(5):391~398.
    Gu X X,Liu J M,Zheng M H,Tang J X,Qi L.2002.Provenance and tectonic setting of the proterozoic turbidites in Hunan,south China:geochemical evidence.Journal of Sedimentary Research,72(3):393~407.
    Javier G V,Rosell L.2011.Mineralogy,diagenesis and hydrochemical evolution in a probertite-glauberite-halite saline lake(Miocene,Emet Basin,Turkey)Chemical geology.352~364.
    Jiang Xi,Zhao Zhidan,Zhu Dicheng,Zhang Fengqin,Dong Guochen,Mo Xuexuan,Guo Tieying.2010.Zircon U-Pb geochronology and Hf isotopic geochemistry of Jiangba,Bangba,and Xiongba granitoids in western Gangdese,Tibet.In Chinese with English abstract.Acta Petrologica Sinica,26(7):2155~2164.
    Li Guangming,Pan Guitang.2002a.Mineral resources in Tibet Autonomous Region and its developmental prospect.In Chinese with English abstract.Resources Science,24(4):16~22.
    Li Guangming,Wang Gaoming,Gao Dafa,Huang Zhiying,Yao Peng.2002b.The tectonic framework and metallogenic systems in southern Gangdise metallogenic belt,Xizang.In Chinese with English abstract.Sedimentary Geology and Tethyan Geology,22(2):1~7.
    Li Guangming,Pan Guitang,Wang Gaoming,Huang Zhiying,Gao Dafa.2004.Evaluation and prospecting value of mineral resources in Gangdise metallogenic belt,Tibet,China.In Chinese with English abstract.Journal of Chengdu University of Technology(Science&Technology Edition),31(1):22~27.
    Liu Dong,Zhao Zhidan,Zhu Dicheng,Wang Qing,Sui Qinglin,Liu Yongsheng,HuZhaochu.2011.The petrogenesis of postcollisional potassic-ultrapotassic rocks in Xungba basin,western Lhasa Terrane:Constraints from zircon U-Pb geochronogy and geochemistry.In Chinese with English abstract.Acta Petrologyica Sinica,27(7):2045~2059.
    Liu Xifang,Zheng Mianping.2010.Geological features and metallogenic mechanism of the Nieer Co magnesium borate deposit,Tibet.In Chinese with English abstract.Acta Geologica Sinica,84(11):1602~1612.
    Luc Harnois.1988.The CIW index:a new chemical index of weathering.Sedimentary Geology,55:319~322.
    Luo Shunshe,Chen Xiaojun,Li Renyuan,Zhang Jiankun.2011.Geochemical behaviors of the Wumishan Formation in the Jibei Depression of Yanshan region.In Chinese with English abstract.Oil&Gas Geology,32(1):17~28.
    McDonough W F,Sun S S.1995.The composition of the earth.ChemGeol.120:339~342.
    McLennan S M,Taylor S R,Kroner A.1983.Geochemical evolution of Archean shales from South Africa.The Swaziland and Pongola Supergroups.Precambrian Research,22:93~124.
    Nesbitt H W,Young G M.1982.Early Proterozoic Climates and plate motions inferred from major element chemistry of lutites.Nature,299(21):715~717.
    Perri F.2013.Composition,provenance and source weathering of Mesozoic sandstones from Western-Central Mediterranean Alpine Chains.Journal of African Earth Sciences.91:32~43.
    Roser B P,Korsch R J.1988.Provenance signature of sandstonemudstone suites determined using discriminant function analysis of major-element data.Chemical Geology,67:119~139.
    Schwab F L.1975.Framework mineralogy and chemical composition of continental margin-type sandstone.Geological society of America.3:486~490.
    Shao Lei,Statteger K,Li Wenhou.1998.A discussion on tectonic setting of the basin from geochemical characteristics of sandstones.In Chinese without English abstract.Chinese Science Bulletin,43(9):985~988.
    Taylor S R,Mclennan S M.1981.The composition and evolution of the continental crust:rare earth element evidence from sedimentary rocks.Great Britain,301:381~399.
    Wang Congshan,Chen Wenxi,Zhang Xu,Shan Fulong.2015.Study on minerogenetic conditions and prospecting of volcanicsedimentary borate deposits.In Chinese without English abstract.Science&Technology Information,13(4):54~55.
    Wang Jie,He Zhonghua,Liu Zhaojun,Du Jiangfeng,Wang Weitao.2006.Geochemical characteristics of Cretaceous detrital rocks and their constraint on provenance in Jixi Basin.In Chinese with English abstract.Global Geology,25(4):341~348.
    Wang Peijun.1996.Binary association of borate-bearing sequences in borate deposits.In Chinese with English abstract.Geology of chemical minerals,18(3):201~206.
    Wang Youming.2005.Early Tertiary alkaline volcanic rocks and their geochemical features in Ge’gyai,Tibet.In Chinese with English abstract.Acta Geologica Sichuan,25(2):72~74.
    William R D,Christopher A S.1979.Plate tectonics and sandstone compositions.The American Association of Petroleum.Geologists Bulletin,63(12):2164~2182.
    Yang Jianghai,Du Yuansheng,Xu Yajun,Zhu Jie.2007.Major element characteristics of sandstones and provenance analysis of basins.In Chinese with English abstract.Geology in China,34(6):1032~1044.
    Yue Xiangyuan,Ma Runze,Zhang Ju.2011.Geochemical characteristics of Cenozoic volcanic rocks in the Cuoqin-Sailipu area,Tibet,China.In Chinese with English abstract.Journal of Chengdu University of Technology(Science&Technology Edition),38(5):565~570.
    Zhang Kexin,Wang Guocan,Ji Junlian,Luo Mansheng,Kou Xiaohu,Wang Yueming,Xu Yadong.2010.Stratigraphic regionalization and sequence of Paleogene-neogene period and its response to uplifting in Qinghai-Tibet Plateau.In Chinese without English abstract.Scientia Sinica,40(12):1632~1654.
    Zhao Hongge,Liu Chiyang.2003.Approaches and prospects of provenance analysis.In Chinese with English abstract.Acta Sedimentologica Sinica,21(3):409~415.
    Zheng Hiongwei,Li Tingdong,Gao Rui,He Rizheng.2010.Deep structure beneath the Cenozoic volcanic zone in the Northern Qinghai-Tibet Plateau and Its cause of formation discussion.In Chinese with English abstract.Geoscience,24(1):131~139.
    柏道远,周亮,王先辉,张晓阳,马铁球.2007.湘东南南华系-早寒武系砂岩地球化学特征及对华南新元古代-早古生代构造背景的制约.地质学报,81(6):755~771.
    鲍佩声,肖序常,苏犁.2006.西藏高原西北缘钾质火山岩地球化学特征及其地质涵义.地质学报,80(10):1578~1587.
    陈道公.1992.地球化学.北京:地质出版社,1~235.
    陈晓琳,黄祥芝.2010.西藏雄巴-德来地区古近纪火山岩相及火山机构.资源环境与工程,24(6):653~658.
    蔡观强,郭峰,刘显太,隋淑玲.2006.碎屑沉积物地球化学:物源属性、构造环境和影响因素.地球与环境,34(4):75~83.
    陈小军,罗顺社,李家华.2011.宣龙坳陷青白口系长龙山组碎屑岩地球化学特征.中国地质,38(6):1477~1484.
    方国庆.1993.K2O/(Na2O+CaO)-SiO2/Al2O3:一个用于推断复理石形成时板块构造背景的判别图.西北地质科学,14(1):121~25.
    耿涛.2007.青藏高原狮泉河-康西瓦地区1∶100万区域重力调查成果.物探与化探,31(5):391~398.
    姜昕,赵志丹,朱弟成,张凤琴,董国臣,莫学宣,郭铁鹰.2010.西藏冈底斯西部江巴-邦巴和雄巴岩体U-Pb年代学与Hf同位素地球化学.岩石学报,26(7):2155~2164.
    李光明,潘桂堂.2002a.西藏矿产资源远景评价与展望.资源科学,24(4):16~22.
    李光明,王高明,高大发,黄志英,姚鹏.2002b.西藏冈底斯南缘构造格架与成矿系统.沉积与特提斯地质,22(2):1~7.
    李光明,潘桂堂,王高明,黄志英,高大发.2004.西藏冈底斯成矿带矿产资源远景评价与展望.成都理工大学学报(自然科学版),31(1):22~27.
    刘栋,赵志丹,朱弟成,王青,隋清霖,刘永胜,胡兆初.2011.青藏高原拉萨地块西部雄巴盆地后碰撞钾质-超钾质火山岩年代学与地球化学.岩石学报,27(7):2045~2059.
    刘喜方,郑绵平.2010.西藏聂耳错镁硼矿地质特征及其成矿机制.地质学报,84(11):1602~1612.
    罗顺社,陈小军,李任远,张建坤.2011.燕山地区冀北坳陷雾迷山组地球化学特征.石油与天然气地质,32(1):17~28.
    潘桂棠,王培生,焦淑沛,向天秀.1990.青藏高原新生代构造演化.北京:地质出版社,1~148.
    邵磊,K.Statteger,李文厚.1998.从砂岩地球化学探讨盆地构造背景.科学通报,43(9):985~988.
    王丛山,陈文西,张旭,单福龙.2015.火山-沉积型硼矿成矿条件及找矿依据.科技资讯,13(4):54~55.
    王杰,何钟铧,刘招君,杜江峰,王伟涛.2006.鸡西盆地白垩纪碎屑岩地球化学特征及其对物源的制约.世界地质,25(4):341~348.
    王培军.1996.硼矿床含硼地层的二元结构模式.化工矿产地质,18(3):201~206.
    汪友明.2005.西藏革吉地区古近纪碱性火山岩的发现及其地质特征.四川地质学报,25(2):72~74.
    夏代祥,刘世坤.1997.西藏自治区岩石地层.武汉:中国地质大学出版社,1~300.
    杨江海,杜远生,许亚军,朱杰.2007.砂岩的主量元素特征与盆地物源分析.中国地质,34(6):1032~1044.
    岳相元,马润泽,张巨.2011.西藏措勤-赛利普地区新生代火山岩地球化学特征.成都理工大学学报(自然科学版),38(5):565~570.
    赵红格,刘池洋.2003.物源分析方法及研究进展.沉积学报,21(3):409~415.
    张克信,王国灿,季军良,骆满生,寇小虎,王岳明,许亚东.2010.青藏高原古近纪-新近纪地层分区与序列及其对隆升的响应.中国科学:地球科学,40(12):1632~1654.
    郑洪伟,李廷栋,高锐,贺日政.2010.青藏高原北部新生代火山岩区深部结构特征及其成因探讨.现代地质,24(1):131~139.
    1四川省地质调查院,2003.中华人民共和国区域地质调查报告1∶250000革吉幅。
    2河北省地质调查院,2006.中华人名共和国区域地质调查报告1∶250000亚热幅,普兰县幅(国内部分)。

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