Geochemical Characteristics and its Tectonic Significance of Quartz Diorite in Baimashan Gold Field,Southern Qinling Mountains
Received date: 2014-05-02
Revised date: 2014-07-26
Online published: 2015-01-22
Baimashan small rock,related to the gold deposit in spacial,is located in the Baimashan gold deposit area,the South Qinling ore-forming sub-belt.It is dominanted by the granodiorite and minor biotite monzonite at the marginal part.Geochemical characters indicate that Baimashan quartz diorite belong to the high K calc-alkalic series,however,they also have more similar geochemical characters to the“C” type adakite than the“O” type adakite.The tectonic nature of lithosphere in South Qinling was characterized by transition from compression to extention in the Early-Middle Triassic period.The granites of adakite in the South Qinling area may resulted from partial melting of the mafic lower crust(basalts) in the thickened lower crust,and mixing with the mafic magma,due to the lithospheric stretching and the asthenosphere upwelling,which can provide some clues to the collision between the North China Plate and the Qinling micro-plate,and also direct copper-gold prospecting.
WANG Jianzhong , QIAN Zhuangzhi , JIANG Chao , XU Gang , LIU Shiqiang , TANG Wenheng . Geochemical Characteristics and its Tectonic Significance of Quartz Diorite in Baimashan Gold Field,Southern Qinling Mountains[J]. Gold Science and Technology, 2014 , 22(5) : 30 -38 . DOI: 10.11872/j.issn.1005-2518.2014.05.030
[1] 张宏飞,肖龙,张利,等.扬子陆块西北缘碧口块体印支期花岗岩类地球化学和Pb-Sr-Nd同位素组成:限制岩石成因及其动力学背景[J].中国科学(D辑),2007,37(4):460-470.
[2] 张国伟,张本仁,袁学诚,等.秦岭造山带与大陆动力学[M].北京:科学出版社,2001.
[3] 秦江峰,赖绍聪.秦岭造山带晚三叠世花岗岩成因与深部动力学[M].北京:科学出版社,2011.
[4] 孙卫东,李曙光,ChenYadong,等.南秦岭花岗岩锆石U-Pb定年及其地质意义[J].地球化学,2000,29(3):209-216.
[5] 田伟,董申保,陈咪咪,等.南秦岭印支期花岗岩带的“地幔印记”[J].地学前缘,2009,16(2):119-128.
[6] 刘志鹏,李建威.西秦岭金厂石英闪长岩的岩浆混合成因:岩相学和锆石U-Pb年代学证据及其构造意义[J]. 地质学报, 2012,86(7):1077-1090.
[7] 张智兴,辛存林.甘肃金厂矽卡岩型铜金矿地质特征及成因探讨[J].甘肃冶金,2004,26(2): 23-25.
[8] 柳世强,王建中,党满宏,等.甘肃白马山金矿床成因初探[J].黄金科学技术,2013,21(4): 32-38.
[9] 牛耀龄.全球构造与地球动力学—岩石学与地球化学方法应用实例[M].北京:科学出版社,2013.
[10] Sun S S,McDonough W F.Chemical and Isotopic Systematic of Oceanic Basalts: Implications for Mantle Comyosition and Processes[M]//Saunders A D,Norry M J(ed).Magmatism in the Ocean Basins.Lodon:Geological Society London Special Publication,1989,42: 313-345.
[11] Rudnick R L,Gao S.Composition of the Continental Crust[J].Treatise on Geochemistry,2003,3: 1-64.
[12] Defant M J,Drummond M S.Derivation of some modern arcmagmas by melting of young subducted lithosphere[J].Nature,1990,347:662-665.
[13] 王强,唐功建,贾小辉,等.埃达克质岩的金属成矿作用[J].高校地质学报,2008,14(3):350-364.
[14] 张旗,王焰,熊小林,等.埃达克岩和花岗岩:挑战与机遇[M」.北京:中国大地出版社,2008.
[15] Rapp R P,Shimizu N,Norman M D.Growth of early continental crust by partial melting of eclogite[J].Nature,2003,425:605-609.
[16] Xiong X L,Adam J,Green T H.Rutile stability and rutile/melt HFSE Partitiong during partial melting of hydrous basalt:implications for TTG Genesis[J].Chemical Geology,2005,218:339-359.
[17] Castillo P R.An overview of adakite petrogenesis[J].Chinese Science Bulletin,2006,51:257-268.
[18] Defant M J,许继峰,Kepezhinskas P,等.埃达克岩关于其成因的一些不同观点[J].岩石学报,2002,18(2):129-142.
[19] 张国伟,郭安林,姚安平.中国大陆构造中的西秦岭—松潘大陆构造结[J].地学前缘,2004,11:23-32.
[20] 冯益民,曹宣铎,张二朋,等.西秦岭造山带的演化、构造格局和性质[J].西北地质,2003,36(1):1-10.
[21] 李曙光,孙卫东,张国伟,等.南秦岭勉略构造带黑沟峡变质火山岩的年代学和地球化学—古生代洋盆及其闭合时代的证据[J].中国科学(D辑),1996,26:223-230.
[22] Yin Q,Jagoutc K A.Precambian bluschist/ceosite bearing ecologite belt in Central China[J].Terra Norra,1991,3:85-96.
[23] 金维浚,张旗,何登发,等.西秦岭埃达克岩的SHRIMP定年及其构造意义[J].岩石学报,2005,21(3):959-966.
[24] 殷勇,殷先明.西秦岭北缘与埃达克岩和喜马拉雅型花岗岩有关的斑岩型铜—钼—金成矿作用[J].岩石学报,2009,25(5):1239-1252.
[25] 张旗,殷勇,殷先明,等.西秦岭与埃达克岩和喜马拉雅型花岗岩有关的金铜成矿及找矿问题[J].岩石学报,2009,25(12):3103-3122.
[26] 王凡,赵磊,王金荣,等.甘肃中南部与埃达克岩有关的斑岩型铜、金矿成矿规律与找矿方向[J].黄金科学技术,2012,20(1):23-26.
[26] 徐学义,陈隽璐,高婷,等.西秦岭北缘花岗质岩浆作用及构造演化[J].岩石学报,2014,30(2):371-389.
[27] 刘哲东,孙丰月,马芳芳,等.陕西南秦岭柞水岩体锆石U-Pb 年龄、岩石地球化学特征及其地质意义[J].世界地质,2013,32(2):236-243.
[28] Rapp R P,Watson E B.Dehydration melting of metabasalt at 8~32kbar:Implications for continental growth and crustmantle recycling[J].Journal of Petrology,1995,36:891-931.
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