粤北帽峰花岗岩体地球化学特征及成因研究
Study of geochemistry and petrogenesis of the Maofeng granite, northern Guangdong province
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摘要: 帽峰花岗岩体是粤北贵东复式花岗岩体中一个重要的产铀岩体。单颗粒锆石U-Pb定年结果为219.6±0.9Ma, 属于印支期岩浆活动产物。该岩体的主要元素显示富硅、富碱、强过铝质和低CaO/Na2O比值等特征。微量元素富集Rb,Th, U,Ce,Sm和Y而亏损Ba,Sr,P和Ti;LREE轻微富集(LREE/HREE=1.70-9.63,(La/Yb)N=0.41-6.25),Eu亏损明显(δEu=0.02-0.22);具有低的εNd(t)值(-12.3--10.8),变化的δ18O(4.1-11.3‰)、(87Sr/86Sr)i(0.71049- 0.73359)、206Pb/204Pb(18.345-22.019)和207Pb/204Pb(15.646-15.863)以及古老的Nd模式年龄(1879-1996Ma)。以上特征表明,帽峰岩体属于典型的壳源型花岗岩,是在地壳伸展-减薄的构造背景下,通过古元古代成分不均一的泥质变质岩低程度部分熔融的方式形成。
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关键词:
- 锆石U—Pb定年 /
- 元素和同位素地球化学 /
- 粤北帽峰岩体
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[1] Chen Jiangfeng, Jahn BM. 1999. Nd, Sr, Pb isotope tracer and continental crust evolution in SE China. In: Zheng YF ( ed. ).Chemical Geodynamics. Beijing: Science Press, 262 - 287 ( in Chinese)
[2] Chen Pei-rong, 2004. Geodynamic setting of Mesozoic magmatism and its relationship to uranium metallgenesis in southeastern China.Uranium Geology, 20 (5): 266 - 270
[3] Chen Xiaoming, Wang Rucheng, Liu Changshi et al. 2002. Isotopic dating and genesis for Fogang biotite granites of Conghua area,Guangdong Province. Geol. J. China Uni. , 8 ( 3 ): 293 - 307 ( in Chinese with English abstract)
[4] Gao Shan, Luo Tinchuan, Zhang Benren et al. 1999. Stracture and composition of the continental crust in East China. Science in China (Series D), 29(3): 204-213( in Chinese)
[5] Han Fa, Shen Jianzhong, Nie Fengjun et al. 1994. The geochronical studies of Sibao Group in the southern margin of Jiangnan Massif.Acta Geoscientia Sinica, ( 1-2 ): 43 - 50 ( in Chinese with English abstract)
[6] Huang Fusheng, Mo Zhiguo, Chen Chengyie et al. 1983. The study of isotopic composition of oxygen, hydrogen and carbon in granites of tin deposits, Gejiu. Acta Petrologica Mineralogica Analyica, 2(4):241 -247( in Chinese with English abstract)
[7] 1995 Kong Xiangsheng, Li Zhifei, Feng Changgen. 1995. Precambrian Geology of Chencai area, Zhejiang Province. Beijing: Geological Press (in Chinese)
[8] Li Shuguang, Liu Deliang, Chen Yizhi et al. 1993. Time of the blueschist belt formation in central China. Scientia Geologica Sinica,28( 1 ): 21 ~27( in Chinese with English abstract)
[9] Lin Jinrong. On the difference of petrological characteristics and conditions for uranium metallogenesis between the eastern and western Guidong granite massif. Uranium Geology, 1992, 8 (2): 93- 99 ( in Chinese with English abstract)
[10] Ling Hongfei, Shen Weizhou, Deng Ping et al. 2004. Age, geochemistry and petrogenesis of the Sundong granite, northern Guangdong province. Acta Petrologica Sinica, 20 ( 3 ): 413 - 424 ( in Chinese with English abstract)
[11] Ni Shijun. A study of the source material and the thermordynamical calculating for the depositional mechanism of the uranium deposit 337( Master\' s degree thesis). Chengdu: Chengdu College of Geology (in Chinese with English abstract)
[12] 1Ni Shijun. Characteristics of REE geochemistry and source material of the uranium deposit No. 337. J. Chengdu Coll. Geol., 1987, 14(4):18 -28 (in Chinese with English abstract)
[13] Shao Jianguo, Peng Shaomei, Peng Songbo. 1995. 40Ar/36Ar-39Ar/36Ar isochron dating for peripheral faults of Yunkai Massif. Guangdong Geology, 10(2): 34 -40( in Chinese with English abstract)
[14] Shen Weizhou, Chen Fanrong, Liu Changshi et al. 1992. Isotopic geochemical characteristics and source material for two types of volcanic-intrusive complexes in Jiangxi Province. Acta Petrologica Sinica, 8(2): 177 -184( in Chinese with English abstract)
[15] Shen Weizhou, Ling Hongfei, Li Wuxian et al. 1999. Study on the Nd-Sr isotopic compositions of granitoids in SE China. Geol. J. China Uni., 5( 1 ): 22 -32( in Chinese with English abstract)
[16] Sun Tao. 2003. Mesozoic strongly peraluminous granites from eastern Nanling Range, southern China: Petrogenesis and implications for tectonics( Degree of doctor of philosophy). Nanjing: Department of Earth Sciences, Nanjing Univdersity
[17] Sun Tao, Zhou Xinmin, Chen Peirong, et al. 2003. Strongly peraluminous granites in Mesozoic, Eastern Nanling Range of Southern China: petrogenesis and implications for tectonics. Science in China (Series D), 33 (12): 1209 -1218 (in Chinese)
[18] Xiao Qinghui, Deng Jinfu, Ma Daquan et al. 2002. The ways of investigation on granitoids. Beijing: Geological Publishing House( in Chinese)
[19] Zhu BQ et al. 1998. Theory and application of isotope system in earth science. Beijing: Science Press ( in Chinese)
[20] Wu Lieqin, Tang Zhengzhong, Liu Ruzhou et al. Discussion on uranium ore-formation age in Xiazhuang ore-field, northern Guangdong.Uranium Geology, 2003, 19( 1 ): 28 - 33 ( in Chinese with English abstract )
[21] Zhang Yanchun. Alkalic mantle fluids and uranium ore-formation in Zhuguang and Guidong granitic massifs. Uranium Geology, 2002,18(4): 210 -219( in Chinese with English abstract)
[22] Zhou Xinmin. 2003. My thinking about granite genesis of South China.Geol J China Uni. , 9 ( 4 ): 556 - 565 ( in Chinese with English abstract)
[23] Carter A, Roques D, Bristow C, et al. 2001. Understanding Mesozoic accretion in Southeast Asia: Significance of Triassic thermotectonism ( Indosinian orogeny) in Vietnam. Geology, 29: 211 - 214
[24] Deniel C, Vidal P, Fernandez A et al. 1987. Isotopic study of the Manaslu granite (Himalaya, Nepal ): inferences on the age and source of Himalayan leucogranites. Contrib. Mineral. Petrol. , 96:78 - 92
[25] DePaolo JD. 1988. Neodymium Isotope Geochemistry. Berlin/Heidelberg/New York. Springer-Verlag. 1-181
[26] Krogstad EJ, Walker RJ. 1996. Evidence of heterogeneous crustal sources: the Harney Peak granite, South Dakota, U. S. A.. Royal Society of Edinburgh: Earth Sciences, 87:331 -337
[27] Lee J, Williams I, Ellis D. 1997. Pb, U and Th diffusion in nature zircon. Nature, 390(13): 159 - 162
[28] Li XH. 1997. Timing of the Cathaysia Block formation: constraints from SHRIMP U - Pb zircon geochronology. Episodes, 20 ( 3 ): 188 -192
[29] Pearce JA. 1983. Role of the sub-continental lithosphere in magma genesis at active continental margins. In: Hawkesworth CJ and Norry MJ ( eds. ), Continental basalts and mantle xenoliths. Nantwich:Shiva, 230 - 249
[30] Sylvester PJ. 1998. Post-collisional peraluminous granites. Lithos, 45:29 -44
[31] Taylor SR, McLennan SM. 1985. The continental crust: its composition and evolution. Oxford: Blackwell
[32] Taylor H P, 1986. Igneous rocks: I. Isotopic case studies of Circumpacific magmatism. In: Valley J W, Taylor H P, O. Niel J R (eds) Stable isotopes in high-temperature geological processes.Mineral Soc Am, Rev Mineral 16:273 -317
[33] Taylor HP. Oxygen, hydrogen and strontium isotope constraints on the origin of granites. Earth Sciences, 1988, 79: 317 - 338
[34] Taylor HP and Sheppard SMF. Igneous rocks: I. Processes of isotopic fractionation and isotope systemation [ A ]. In: "Stable isotopes in high temperature geological processes" ( eds. Valley JW, Taylor HP and ONeil JR), Rev. Mineral. , 1986, 16:227 -271
[35] Todt, W. , Cliff, R. A. , Hanser, A. , Hofmann, A.W. 1996. In Earth Processes: Reading the Isotopic Cod, ( eds Basu, A. , Hart, S. ).429 -437 (Geophys. Monogr. 95, Washington D. C. )
[36] Valley J W, Graham C M, 1996. Ion microprobe analysis of oxygen isotope ratios in quartz from Skye granite: healed micro-cracks, fluid flow, and hydrothermal exchange. Contrib. Mineral. Petrol. , 124,225 - 234
[37] Wang Dezi, Shen Weizhou, Liu Changshi and Xiong Xiaolin. Geochemical characteristics and origin of the volcanic-intrusive complex in Yanbei, Jiangxi Province. Science in China (B Series), 1994,37(11) :1367 - 1378
[38] Wei C. -S. , Zheng Y. -F. , Zhao Z. -F. and Valley J. W. , 2002. Oxygen and neodymium isotope evidence for recycling of juvenile crust in northeast China. Geology, 30, 375 - 378
[39] Wu, Fu-yuan; Sun, De-you; Li, Huimin; Jahn, Bor-ming; Wilde, S.2002. A-type granites in northeastern China: age and geochemical constraints on their petrogenesis. Chem. Geol. 187, 143 - 173
[40] Xu Keqin, Sun Nai, Wang Dezi et al. 1984. Petrogenesis of the grantoid and their metallogenetic relations in South China. In: Xu KQ, Tu GC ( eds. ). Geology of granites and their metallogenetic relations.Beijing: Science Press, 1-33
[41] Zheng Y F, Fu B, Gong B, et al. , 2003. Stable isotope geochemistry of ultrahigh pressure metamorphic rocks from the Dabie-Sulu orogen in China: Implications for geodynamics and fluid regime. Earth Sci Rev. , 62, 105 - 161
[42] 陈江峰,江博明.1999. Nd,Sr,Pb同位素示踪和中国东南大陆地壳演化.见郑永飞主编.化学地球动力学.北京:科学出版社,262-287
[43] 陈培荣.2004.华南东部中生代岩浆作用的动力学背景及其与铀成矿关系铀矿地质,20:266-270
[44] 陈小明,王汝成,刘昌实,等.2002.广东从化佛冈(主体)黑云母花岗岩定年和成因.高校地质学报,8(3):293-307
[45] 高山,骆庭川,张本仁,等.1999.中国东部地壳的结构和组成.中国科学(D辑),29(3):204-213
[46] 韩发,沈建忠,聂凤军,等.江南古陆南缘四堡群同位素地质年代学研究.地球学报,1994,(1-2):43-50
[47] 黄福生,穆治国,陈成业,等.个旧锡矿花岗岩的氧氢碳稳定同位素研究.岩石矿物及测试,1983,2(4):241-247
[48] 孔祥生,李志飞,冯长根,等.浙江陈蔡地区前寒武纪地质.北京:地质出版社,
[49] 李曙光,刘德良,陈移之,等.1993.中国中部蓝片岩的形成时代.地质科学,28(1):21~27
[50] 林锦荣.论贵东岩体东西部花岗岩岩石学特征和铀成矿条件差异性.铀矿地质,1992,8(2):93-99
[51] 凌洪飞,沈渭洲,邓平,等.2004.粤北笋洞花岗岩的形成时代、地球化学特征与成因.岩石学报,20(3):413-424
[52] 刘汝洲,程旭初,胡柳英,等.下庄矿田岩浆演化系列及成矿富集作用.科研报告(内部),1995
[53] 倪师军.337铀矿床成矿物质来源探讨及铀沉淀机制的热力学计算模拟(硕士研究生论文).成都:成都地质学院,1986
[54] 倪师军.337铀矿床REE地球化学特征与成矿物质来源.成都地质学院学报,1987,14(4):18-28
[55] 邵建国,彭少梅,彭松柏.1995.云开地块周边断裂带40Ar/36Ar-39Ar/36Ar等时线定年.广东地质,10(2):34-40
[56] 沈渭洲,陈繁荣,刘昌实,等.1992.江西两类火山-侵入杂岩的同位素地球化学特征和物质来源.岩石学报,8(2):177-184
[57] 沈渭洲,凌洪飞,李武显,等.1999.中国东南部花岗岩类Nd-Sr同位素研究.高校地质学报,5(1):22-32
[58] 孙涛.2003.南岭东段中生代强过铝花岗岩成因及其地质意义(博士学位论文).南京:南京大学地球科学系
[59] 孙涛,周新民,陈培荣,等.2003.南岭东段中生代强过铝花岗岩成因及其大地构造意义.中国科学(D辑),33(12):1209-1218
[60] 吴元保,郑永飞,龚冰,等.北淮阳庐镇关岩浆岩锆石U-Pb年龄和氧同位素组成.岩石学报,2004
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