闫浩;皮道会;黄志伟;

• 1:中国地质大学资源学院

摘要(Abstract)：

对鄂西白果园地区新发现的层状斜长角闪岩进行了岩石学、地球化学和年代学研究。结果表明:该斜长角闪岩的原岩为洋中脊玄武岩,形成于超俯冲带环境,时代为中元古代晚期,可与庙湾岩组对比。该斜长角闪岩的发现证实扬子板块北缘在罗迪尼亚(Rodinia)超大陆中可能与澳大利亚比邻。

关键词(KeyWords)： 年代学;地球化学;斜长角闪岩;白果园;鄂西

Abstract:

Keywords:

基金项目(Foundation): 中国地质调查局地调项目(12120113094200)

作者(Author): 闫浩;皮道会;黄志伟;

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DOI:

参考文献(References)：

• [1]高山,张本仁.扬子地台北部太古宙TTG片麻岩的发现及其地质意义[J].地球科学:中国地质大学学报,1990,15(6):675-679.
• [2]魏君奇,王建雄,王晓地,等.黄陵地区崆岭群中基性岩脉的定年及意义[J].西北大学学报:自然科学版,2009,39(3):466-471.
• [3]Gao S,Yang J,Zhou L,et al.Age and growth of the Archean Kongling terrain,South China,with emphasis on 3.3 Ga granitoid gneisses[J].American Journal of Science,2011,311(2):153-182.
• [4]严溶,周汉文,曾雯,等.湖北宜昌崆岭群孔兹岩系地球化学特征[J].地质科技情报,2006,25(5):41-46.
• [5]Peng S B,Kusky T M,Wang L,et al.Geology,geochemistry,and geochronology of the Miaowan ophiolite,Yangtze Craton:Implications for South China’s amalgamation history with the Rodinian supercontinent[J].Gondwana Research,2012,21(2/3):577-594,
• [6]彭松柏,李昌年,王璐,等.鄂西黄陵背斜南部元古宙庙湾蛇绿岩的发现及其构造意义[J].地质通报,2010,29(1):8-20.
• [7]熊成云,韦昌山,金光富,等.鄂西黄陵背斜地区前南华纪古构造格架及主要地质事件[J].地质力学学报,2005,10(2):97-112.
• [8]谭满堂,丁振举,姚书振,等.鄂西白果园银钒矿床地球化学特征与成矿作用[J].地质科技情报,2013,32(2):50-57.
• [9]路远发.GeoKit:一个用VAB构建的地球化学工具软件包[J].地球化学,2004,33(5):459-464.
• [10]高剑峰,陆建军,赖鸣远,等.岩石样品中微量元素的高分辨率等离子质谱分析[J].南京大学学报:自然科学版,2003,39:844-850.
• [11]Liu Y S,Gao S,Hu Z C,et al.Continental and oceanic crust recycling-induced melt-peridotite interactions in the TransNorth China Orogen:U-Pb dating,Hf isotopes and trace elements in zircons of mantle xenoliths[J].Journal of Petrology,2010,51:537-571.
• [12]Ludwig K R.User′s manual for isoplot/EX version 3.00:A geochronological toolkit for Microsoft Excel[J].Berkeley Geochronology Center,Special Publication,2003,4:1-70.
• [13]Blank L P,Kamo S L,Williams I S,et al.The application of SHRIPM to Phanerozoic geocheronology:A critical appraisal of four zircon standards[J].Ghemical Geology,2003,200:171-188.
• [14]Winchester J A,Floyd P A.Geochemical discrimination of different magma series and their differentiation products using immobile elements[J].Chemical Geology,1977,20:325-343.
• [15]Glassley W.Geochemistry and tectonics of the Grescent volcanic rocks,Olympic Peninsula,Washington[J].Geo1ogical Society of American Bulletin,1974,85:785-794.
• [16]Mullen E D.MnO/TiO2/P2O5:A minor element discriminant for basaltic rocks of oceanic environments and its implications for petrogenesis[J].Earth and Planetary Sciences Letters,1983,62:53-62.
• [17]Wood D A.The application of a Th-Hf-Ta diagram to problems of tectonomagmatic classification and to establishing the nature of crustal contamination of basalitic lavas of the British Tertiary volcanic province[J].Earth and Planetary Science Letters,1980,50:11-30.
• [18]Meschede M.A method of discriminating between different types of mid-ocean ridge basalts and continental tholeiites with Nb-Zr-Y diagram[J].Chemical Geology,1986,56:207-218.
• [19]Shervais J W.Ti-V plots and the petrogenesis of modern and ophiolitic lavas[J].Earth and Planetary Science Letters,1982,31:457-484.
• [20]Niu Y,Regelous M,Wendt J I,et al.Geochemistry of nearEPR seamounts:Importance of source vs.process and the origin of enriched mantle component[J].Earth and Planetary Science Letters,2002,199:327-345.
• [21]Dilek Y,Furnes H.Ophiolite genesis and global tectonics:Geochemical and tectonic fingerprinting of ancient oceanic lithosphere[J].Geological Society of America Bulletin,2011,123:387-411.
• [22]吴元宝,郑永飞.锆石成因矿物学研究及其对U-Pb年龄解释的制约[J].科学通报,2004,49:1589-1604.
• [23]马大铨,李志昌,肖志发.鄂西崆岭杂岩的组成、时代及地质演化[J].地球学报,1997,18(3):233-241.
• [24]Li Z X,Bogdanova S V,Collins A S,et al.Assembly,configurations,and break-up history of Rodinia:A synthesis[J].Precambrian Research,2008,160:179-210.
• [25]Zhao J H,Zhou M F,Yan D P,et al.Reappraisal of the ages of Neoproterozoic strata in South China:No connection with the Grenvillian orogeny[J].Geology,2011,39:299-302.