王安镇岩体岩石地球化学特征及成因探讨
Petrological and geochemical characteristics of the Wanganzhen complex and discussion on its genesis.
-
摘要: 王安镇岩体是我国东部太行山-大兴安岭中生代构造岩浆带中规模最大、岩石类型最多的代表性岩体之一,该岩体由早期、主期和晚期三期岩石组成。本文通过对王安镇岩体三期岩石主量元素、稀土元素、微量元素和Sr、Nd、Pb同位素的系统研究,发现该岩体主期岩石(花岗闪长岩、二长花岗岩和少量石英闪长岩)具有与埃达克岩类似的独持的岩石地球化学特征:SiO_2≥56%,Al_2O_3≥15%,低Y(4.20~12.68μg/g)而高Sr(518~861μg/g)和Sr/Y值(60.19~178.10),LREE强烈富集(La/Yb)_N=34.06~76.91,HREE强烈亏损Yb=0.44~1.00,Sr、Eu无明显异常,高场强元素(如Nb,Hf和Ti)相对亏损,I_(Sr)值为0.7060,ε_(Nd)(t)均为负值(-16.29~-14.27),ε_(Sr)(t)均为正值(+23.7~+25.0),应属于埃达克质岩,但又与俯冲板片熔融形成的埃达克岩的地球化学组成明显不同,推测可能是由于晚中生代区域内热地幔物质是“蘑菇云”状上涌,使热侵蚀面抬升到地壳底部,导致玄武质下地壳在高压下发生部分熔融的产物。而早期和晚期岩石则属于非埃达克质岩,早期为基-中性岩石(角闪石岩、辉长岩和闪长岩),富Mg、Fe,LREE富集,Eu呈正异常,富集相容元素而亏损不相容元素,I_(Sr)=为0.7056,ε_(Nd)(t)=-16.72~-10.92,推测是华北地台岩石圈富集地幔部分熔融的产物,
-
[1] [1]Atherton M P, Petford N. 1993. Generation of sodium-rich magmas from newly underplated basaltic crust. Nature, 362:144-146
[2] [2]Geology and Mineral Resources Bureau of Hebei Province. 1989. Geological memoirs, series 1: Number 15. Beijing: Geological Publishing House (in Chinese)
[3] [3]Green T H. 1980. Island arc and continent-building magmatism - A review of petrogeneticmodels based on experimental petrology and geochemistry. Tectonophysics, 63: 367-385
[4] [4]Bai Zhimin, Xu Shuzhen, Ge Shiwei. 1991. The Badaling Granitoids. Beijing:Geological Publishing House (in Chinese )
[5] [5]Defant MJ, Drummond MS. 1990. Deriviation of some modern arc magmas by melting of young subducted Lithosphere. Nature, 347:662-665
[6] [6]Chang Zhaoshan. 1997. Late magmatic and postmagmatic phenomena of instrusive rocks in the Taihang Mountains. (Ph. D Dissertation of Peking University) (in Chinese with English abstract)
[7] [7]Defant MJ, Clark LF, Stewart RH, Drummond MS, de Boer JZ, Maury RC,Bellon H, Jackson TE and Restrepo JF. 1991. Andesite and Decite genesis via contrasting processes: The geology and geochemistry of EI Valle volcano, Panama. Contrib. Mineral. Petrol., 106:309-324
[8] [8]Defant MJ, Drummond MS. 1993. Mount st. Heles: Potential example of the partial melting of the subducted Lithosphere in a volcanic arc. Geology, 21:547-550
[9] [9]Defant MJ, Xu JF,Kepezhinskas P,Wang Q, Zhang Q, Xiao L. 2002. Adakite: some riations on a theme. Acta Petrologica Sinica, 18(2):129-142
[10] [10]Drummond MS, Defant MJ. 1990. A model for trondjenite-tonalite-dacite genesis and crustal grown via slab melting: Archaean to modern composition. J. Geophs. Res., 95:21503-21521
[11] [11]Kay S M, Ramos V A, Marquez M. 1993. Evidence in Cerro Pampa Volcanic rocks for slab-melting prior to ridgeitrench collision in southern South America. The Journal of Geology, 101: 703-714
[12] [12]He Guoqi, Wang Tingyin, Wang Shiguang. 1982. On the geotectonic feature of the late Mesozoic granitic intrusions in the Northern part of Taihang Mountain. The record of geological research: 21-29. Beijing: Publishing House of Peking University (in Chinese with English abstract)
[13] [13]Hu Shouxi, Lin Qianlong, Chen Zemin et al. 1988. Geology and metallogeny of the conjoined belt between Palaeoplates of the north China and southeast China. Nanjing: Publishing House of Nanjing University (in Chinese)
[14] [14]Hu Shouxi et al. 1991. Relationship between different granites and plate tectonics, its formation and distribution rules. In: Contribution on granitoids and their minerogenesis in North China. Ed. By Li Zhitong. Beijing: Geological Publishing House, 33-39 (in Chinese)
[15] [15]Li Changnian. 1991. Trace element in igneous petrology. Wuhan: Press of China University of Geosciences (in Chinese)
[16] [16]Li Ning. 1986. Geological characteristics and genesis of Bei Luoxia iron deposit, Chang Zhi, in Shanxi Province(Master Dissertation of Peking University) (in Chinese with English abstract)
[17] [17]Liu Fengshan, Shi Zhunli. 1998. Dynamic mechanism about generation of Mesozoic granites in Taihang Shan-Yan shan area and intracontinental orogeny. Acta Geoscientia Sinica-Bulletin of the Chinese academy of geological sciences,19(1):12-18 (in Chinese with English abstract)
[18] [18]Lu Fengxiang, Zheng Jianping, Li Wuping, Chen Meihua, Cheng Zhongmei. 2000. The main evolution pattern of Phanerozoic mantle in the eastern China: The "Mushroom Cloud" model. Earth Science Frontiers (China University of Geosciences, Beijing), 7(1):97-107 (in Chinese with English abstract)
[19] [19]Luo Zhaohua, Deng Jinfu, Han Xiuqing. 1999. On characteristics of magmatic activities and orogenic process of Taihangshan intraplate orogen. Beijing: Geological Publishing House (in Chinese)
[20] [20]Martin H. 1993. The mechanisms of petrogenesis of the Archaean continental crust-comparison with modern oricesses. Lithos, 30: 373-388
[21] [21]Martin H. 1999. Adakitic magmas: modern analogues of Archaean granitoids. Lithos, 46: 411-429
[22] [22]Mu Baolei, Yan Guohan. 1992. Geochemistry of Triassic alkaline or subalkaline igneous complexes in the Yan-liao area and their significane. Acta geologica sinica, 66(2): 108-121
[23] [23]Peacock S M, Rushmer T, Thompson A B. 1994. Partial melting of subducting oceanic crust. Earth Planet. Sci. Lett., 121:227-244
[24] [24]Peter A. 1991. Oceanic Basalts. London: Blackie Qian Q. 2001. Adakite: Geochemical characteristics and genesis. Acta petrologica et mineralogica, 20(3): 297-306 (in Chinese with English abstract)
[25] [25]Qin DJ. 1995. Study on the magmatism during Yanshan Period in Lingqiu-Laiyuan Area and mineralization (Ph. D Dissertation of Peking University) (in Chinese with English abstract)
[26] [26]Shi Zhunli. 1990. Evolution of magma and mineralization of Laiyuan granitoids complex in Hebei Province. Memorial contribution for Prof. Feng Jinglan\'s ninetieth birthday: 180-191, Beijing: Geological Publishing House (in Chinese with English abstract)
[27] [27]Song Xinyu. 1995. Yanshanian magamatism and metallogeny of Pingshui Region , An Lin of Han Xin(Ph. D Dissertation of Peking University) (in Chinese with English abstract)
[28] [28]Sun S S and McDonough W F. 1989. Chemical and isotopic systematics of oceanic basalts: implications for mantle composition and processes. In: Saundern A. D. and Norry M J(eds.). Magmatism in the Ocean Basins, Geo. Soc. Spec.
[29] [29]Wang Hongzhen, Li Guangcen. 1990. Correlation table of stratigraphical subdivision. Beijing: Geological Publishing House
[30] [30]Wang Jiliang, Li Binze, Zhou Dexing, Yao Shichen, Li Zhiyin. 1994. Geological characteristics and related mineralization of the granitoids complex in Hebei Province. Beijing: Geological Publishing House (in Chinese)
[31] [31]Wang Qiang, Xu Jifeng, Zhao Zhenhua. 2001. The summary and comment on research on a new kind of igneous rock-adakite. Advance in earth sciences, 16(2): 201-208 (in Chinese with English abstract)
[32] [32]Wang Shiguang. 1981. Petrological chracteristics of Laiyuan complex. (Master Dissertation of Peking University)
[33] [33]Wang Shiguang, Han Baofu, Li Rui, Ma Chang. 1994. A study on geochemistry of Wanganzhen complex in the Northern segment of Taihangshan tectonomagmatic belt. Lithospheric geoscience: 29-38, Beijing: Seismological Press (in Chinese with English abstract)
[34] [34]Wu Liren et al. 1984. Mesozoic and Cenozoic volcanic rocks in east China and its nearby area: 30-41, Beijing: Science Press
[35] [35]Wang Yan, Zhang Qi. 2001. A granitoid complex from Badaling area, North China: compositon, geochemical characteristics and its implications. Acta Petrologica Sinica, 17(4):533-540 (in Chinese with English abstract)
[36] [36]Yan G H,Xu B L,Mu B L et al.,2000 Alkaline intrusives at the East foot of the Taihang-Da Hinggan Mountains:chronology ,Sr,Nd and Pb isotopic characteristics and their implications. Acta Geologica Sinica, 74(4):774-781
[37] [37]Zhang Q, Wang Y, Qian Q, Yang J H, Wang Y L, Zhao T P, Guo G J. 2001. The characteristics and tectonic-metallogenic significances of the adakites in Yanshan period from eastern China. Acta Petrologica Sinica, 17(2) 236-244 (in Chinese with English abstract)
[38] [38]Zhang Q, Wang Y, and Wang YL. 2001. Preliminary study on the components of the lower crust in east China Plateau during Yanshan Period: Constraints on Sr and Nd isotopic compositions of adakite-like rocks. Acta Petrologica Sinica, 17(4):505-513 (in Chinese with English abstract)
[39] [39]白志民,许淑珍,葛世伟. 1991. 八达岭花岗杂岩. 北京:地质出版社
[40] [40]常兆山. 1997. 太行山中生代侵入岩的岩浆晚期现象和岩浆期后现象. 北京大学博士论文
[41] [41]河北省地质矿产局. 1989. 河北省北京市天津市区域地质志. 北京:地质出版社
[42] [42]何国琦,王廷印,王式洸. 1992. 华北太行山晚中生代深成岩浆活动的大地构造背景. 地质研究论文集,21-29. 北京:北京大学出版社
[43] [43]胡受奚,林潜龙,陈泽铭等. 1988. 华北与华南古板块拼合带地质和成矿. 南京:南京大学出版社, 2-103
[44] [44]胡受奚等. 1991. 不同类型花岗岩与板块构造的关系及其形成和分布规律.见: 李之彤主编, 中国北方花岗岩及其成矿作用论文集. 北京:地质出版社:33-39
[45] [45]李昌年. 1991. 火成岩微量元素岩石学. 北京:中国地质大学出版社
[46] [46]李宁. 1986. 山西长治北洛峡铁矿地质特征和成因作用. 北京大学硕士论文
[47] 刘凤山,石准立. 1998. 太行山-燕山地区中生代花岗岩生成动力学机制与陆内造山作用. 地球学报,19(1):12-18
[48] [48]陆凤香,郑建平,李伍平等.2000. 中国东部显生宙地幔演化的主要样式:"蘑菇云"模型.地形前缘,7(1): 97-107
[49] [49]罗照华,邓晋福,韩秀卿. 1999. 太行山造山带岩浆活动及其造山过程反演. 北京:地质出版社
[50] [50]牟保磊, 阎国翰. 1992. 燕辽三叠纪碱性偏碱性杂岩体地球化学特征及意义.地质学报,66(2): 108-121
[51] [51]钱青. 2001. adakite 的地球化学特征及成因. 岩石矿物学杂志,20(3):297-306
[52] [52]秦大军. 1995. 灵丘涞源地区燕山期岩浆活动与成矿作用研究. \[博士学位论文\]. 北京:北京大学
[53] [53]石准立. 1990. 河北涞源花岗杂岩体岩浆演化与成矿. 冯景兰教授诞辰90周年纪念文集. 北京:地质出版社,180-191
[54] [54]宋新宇. 1995. 邯邢安林平顺地区燕山期岩浆活动与成矿作用. 北京大学博士论文
[55] [55]王鸿桢,李光岑. 1990. 国际地层时代对比表. 北京:地质出版社
[56] [56]王季亮,李丙泽,周德星,姚士臣,李枝荫. 1994. 河北省中酸性岩体地质特征及其与成矿关系:6-172, 北京:地质出版社
[57] [57]王强,许继峰,赵振华. 2001. 一种新的火成岩-埃达克岩的研究综述. 地球科学进展. 16(2):201-208
[58] [58]王式洸. 1981. 涞源岩体的岩石学特征. 北京大学地质学系硕士论文
[59] [59]王式洸,韩宝福,李瑞,马昌. 1994. 太行山北段王安镇岩体地球化学研究及其地球动力学意义. 岩石圈地质科学: 29-38, 北京:地震出版社
[60] [60]王焰,张旗. 2001. 八达岭花岗杂岩的组成、地球化学特征及其意义. 岩石学报,17(4): 533-540
计量
- 文章访问数: 8883
- PDF下载数: 8481
- 施引文献: 0