|本期目录/Table of Contents|

[1]胡能高,苏建平,张海峰,等.金佛寺岩体地球化学特征及成因[J].地球科学与环境学报,2006,28(01):5-12.
　HU Neng-gao,SU Jian-ping,ZHANG Hai-feng,et al.Geochemical Characteristics Petrogenesis of Jinfosi Pluton in Qilian Mountains[J].Journal of Earth Sciences and Environment,2006,28(01):5-12.
点击复制

金佛寺岩体地球化学特征及成因(PDF)
分享到：

《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

卷:
第28卷
期数:
2006年第01期
页码:
5-12
栏目:
出版日期:
2006-03-15

文章信息/Info

Title:
Geochemical Characteristics Petrogenesis of Jinfosi Pluton in Qilian Mountains
作者:
胡能高1; 苏建平2; 张海峰2; 冯备战2
1.长安大学地球科学与国土资源学院,陕西西安710054;2.甘肃地质调查院,甘肃兰州710050
Author(s):
HU Neng-gao1; SU Jian-ping 2; ZHANG Hai-feng2; FENG Bei-zhan2
1. School of Earth Sciences and Resources Management, Chang’ an University, Xi’an 710054, Shaanxi, China; 2. Gansu Institute of Geological Survey, Lanzhou 710050, Gansu, China
关键词:
北祁连造山带; 花岗岩; 深熔作用; 微量元素; 金佛寺岩体; 甘肃省
Keywords:
North Qilian orogen belt;  granite;  anatexis;  trace element;  Jinfosi pluton;  Gansu Province
分类号:
P588.12;P594.1
DOI:
-
文献标志码:
A
摘要:
金佛寺岩体是一个晚志留世侵入于北祁连造山带中的花岗质岩体,主要由黑云母二长花岗岩,黑云母 钾长花岗岩和黑云母石英二长岩组成。岩体中岩石w(SiO2)为67.09%～74.97%,w(K2O)/w(Na2O)为1.18 ～1.83,w(MgO),w(TFeO),w(CaO)和w(Al2O3)随w(SiO2)增大而减小,而w(K2O)增大。ANCK为1.06～ 1.24,均属铝过饱和,σ为1.25～2.48,属钙碱性系列。.REE为(21.36～254.9)×10-6,与w(SiO2)呈负相关 关系,多数稀土配分曲线相似:轻稀土分异明显大于重稀土。δ(Eu)为0.64～0.19,铕的亏损随w(SiO2)增大而 增大。Ni,Cr,Co,Sc,V和Sr随w(SiO2)增大而变小,Rb增大,Th和Th/U比值呈正相关,Ta与Nb/Ta呈负相 关。岩体的主量元素、稀土和微量元素的变异主要由深熔过程引起,而不是结晶分异作用引起的。主要源岩是 富长英质的,而不是富泥质的,其矿物组合可能是普通角闪石+黑云母+斜长石+钾长石+石英,与北大河岩群 很相似。
Abstract:
The Jinfosi Pluton, a granitoid complex intruded in North Qilian Orogen Belt in late Silurian period, is mainly consisted of biotite monzogranite, biotite syenogranite and biotite quartz monzonite. The rocks of the plu- ton have 67.09%～ 74.97% w(SiO2), 1.18～ 1.83 w(K2O)/w(Na2O), and their w(TFeO), w(MgO),w(CaO) and w(Al2O3)decrease and w(K2O)increases with increasing w(SiO2). All rocks are peraluminous with ANKC of 1.06～ 1.24. The magmatic type belongs to calc-alkalic withσ= 1.25～ 2.48. The? REE varies from 21.36× 10 -6 to 254.90× 10 -6 and is negatively correlated to w(SiO2). Most of REE patterns show similarities in frac- tionating behaviour: LREE has more obviously fractionation than HREE;δ(Eu)vary from 0.64 to 0.19 and neg- ative Eu anomalies generally increase with increasing w(SiO2); Ni, Cr, Co, Sc, V and Sr decrease and Rb in- crease with increasing w(SiO2); Th is positively correlated to Th/U, but Ta is opposed to Nb/Ta. The varia- tions in abundances of major, rare earth and trace elements in the pluton resulted mainly from the anatectic process and did not from the crystallization differentation. These data indicate that the source rocks of the pluton are mainly rich-felsic and poor-argillaceous. The mineral assemblage of the source rocks is possible of hornblende + biotite+ plagioclase+ K-feldspar+ quartz, which belongs to the Beidahe Group.

参考文献/References:

[1] 张德全，孙桂英，徐洪 林. 祁连山 金佛寺 岩体的 岩石学 和同 位素年代学研究[J] . 地球学报，1995(4):375 385.
[2] 甘肃省地质矿产局. 甘 肃省区域 地质志[M] . 北京 :地质出 版社，1989.
[3] 夏林圻，夏祖春，任 有祥，等. 祁 连山及邻区火山作用与成矿 [M] . 北京 :地质出版社，1998.
[4] Peccerillo R, T aylo r S R. Geochemist ry of Eocene C alc-alkaline Volcanic Rocks f rom the Kast am on u Area，Northern T urkey[J] . C ont rib Mineral Pet rol，1976，58 :63 81.
[5] 刘英俊，曹励 明. 元素地 球化学 导论[M] . 北京 :地质 出版 社，1987.
[6] Alleg re C J，Mins ter J F . Qu an tit ati ve Models of T race Element Behavior in Magm at ic Processes[J] . Earth Planet S ci Let t，1978，38 :1 25.
[7] Patino Dou ce A E，J oh nst on A D. Phase Equilib ri a and M elt Product ivit y in the Pelit ic S yst em :Im plicati ons f or th e Origin of Peraluminous Grani toids an d Aluminous Granuli tes [J] . Cont rib Mineral Pet rol，1991，107 :202 218.
[8] Patino Douce A E，Beard J S . Dehydrati on-melt ing of Biot it e Gnei ss and Quart z Am phiboli te f rom 3 to 15 k bar[J] . J Pot rol，1995，36 :707 738.
[9] Sk jerli e K P，John st on A D. Vapou r-absent Melting f rom 10 t o 20 kbar of C rust al Rocks that Cont ain Mult iple H ydrous Phases :Imp li cati on s f or Anatexis in the Deep to Very Deep Cont inent al Cru st and Acti ve Cont inent al Margins[J] . J Petrol , 1996，37 :661 691.
[10] Syl vest er P J. Post-col lisional S t rong ly Peralaminous Granit es[J] . Li th os，1998，45 :29 44.
[11] Condie K C. Chemi cal Composi tion and Evolut ion of the Upper Continen tal Cru st:Con t rast ing Resu lt s f rom S urf ace Samples an d S hal es[J] .C hem Geol，1993，104 :1 37.
[12] 许荣华，张宗清，宋鹤 彬. 稀土地 球化学 和同位 素地质 新办 法[M] . 北京 :地质出版社，1985.

相似文献/References:

[1]赵磊,漆富勇,李江东.江西赣县洋西坑钼矿床地质特征及Re-Os同位素测年[J].地球科学与环境学报,2013,35(04):77.
　ZHAO Lei,QI Fu-yong,LI Jiang-dong.Geological Characteristics and Re-Os Isotopic Dating of Yangxikeng Molybdenum Deposit in Ganxian of Jiangxi[J].Journal of Earth Sciences and Environment,2013,35(01):77.
[2]毕君辉,葛文春,张彦龙,等.佳木斯地块东部二叠纪锦山花岗杂岩体的成因及其地质意义[J].地球科学与环境学报,2014,36(04):16.
　BI Jun-hui,GE Wen-chun,ZHANG Yan-long,et al.Petrogenesis of Permian Jinshan Granitic Complex in the Eastern Jiamusi Massif and Its Geological Implication[J].Journal of Earth Sciences and Environment,2014,36(01):16.
[3]周争艳,杨家喜,徐涛,等.西秦岭天水地区早中生代草川铺花岗岩年代学、地球化学特征及其地质意义[J].地球科学与环境学报,2015,37(02):11.
　ZHOU Zheng-yan,YANG Jia-xi,XU Tao,et al.Geochronological and Geochemical Characteristics of Early Mesozoic Caochuanpu Granitoids in Tianshui Area of West Qinling and Their Geological Significance[J].Journal of Earth Sciences and Environment,2015,37(01):11.
[4]赖绍聪,赵少伟.川西北塔公石英闪长岩地球化学特征和岩石成因[J].地球科学与环境学报,2015,37(03):1.
　LAI Shao-cong,ZHAO Shao-wei.Geochemistry and Petrogenesis of Quartz Diorite in Tagong Area of Northwest Sichuan[J].Journal of Earth Sciences and Environment,2015,37(01):1.
[5]翟明国.大陆动力学的物质演化研究方向与思路[J].地球科学与环境学报,2015,37(04):1.
　ZHAI Ming-guo.New Research Interests and Concept of Material Evolution for Continental Dynamics[J].Journal of Earth Sciences and Environment,2015,37(01):1.
[6]高景刚,梁婷,李文渊,等.新疆额尔齐斯韧性剪切带新生锆石及其年代学意义[J].地球科学与环境学报,2015,37(04):15.
　GAO Jing-gang,LIANG Ting,LI Wen-yuan,et al.Neogenic Zircons in Ertix Ductile Shear Zone of Xinjiang and Their Geochronological Significance[J].Journal of Earth Sciences and Environment,2015,37(01):15.
[7]王超,陈斌,马星华,等.东天山三岔口地区早、晚古生代岩体成因及其对康古尔缝合带演化的意义[J].地球科学与环境学报,2015,37(05):52.
　WANG Chao,CHEN Bin,MA Xing-hua,et al.Petrogenesis of Early and Late Paleozoic Plutons in Sanchakou Area of East Tianshan and Their Implications for Evolution of Kangur Suture Zone[J].Journal of Earth Sciences and Environment,2015,37(01):52.
[8]冯罡,万乐,刘正宏,等.内蒙古巴林右旗晚侏罗世巴彦琥硕花岗岩地球化学特征、锆石U-Pb年龄及Hf同位素组成[J].地球科学与环境学报,2015,37(06):33.
　FENG Gang,WAN Le,LIU Zheng-hong,et al.Geochemical Characteristics, Zircon U-Pb Age and Hf Isotopic Composition of Late Jurassic Bayanhushuo Granites in Balinyou Banner of Inner Mongolia[J].Journal of Earth Sciences and Environment,2015,37(01):33.
[9]叶永钦,叶松鑫,许幼,等.粤北长江铀矿田长排地区花岗岩体地球化学特征及其意义[J].地球科学与环境学报,2015,37(06):101.
　YE Yong-qin,YE Song-xin,XU You,et al.Geochemical Characteristics of Granite Body in Changpai Area of Changjiang Uranium Orefield, the Northern Guangdong and Their Significance[J].Journal of Earth Sciences and Environment,2015,37(01):101.
[10]孙兰兰,杨家喜,周争艳,等.适用于壳幔混合物源成因花岗岩中暗色微粒包体的单斜辉石压力计[J].地球科学与环境学报,2016,38(01):34.
　SUN Lan-lan,YANG Jia-xi,ZHOU Zheng-yan,et al.Clinopyroxene Geobarometer Applied to Mafic Microgranular Enclaves in Granite Originated from Crust-mantle Mixed Source[J].Journal of Earth Sciences and Environment,2016,38(01):34.

备注/Memo

备注/Memo:
[收稿日期]2005-05-28
[基金项目]国家重点基础研究发展规划国际重大合作项目(2001CB711001);中国地质调查局项目(DK0002019)
[作者简介]胡能高(1949-),男,浙江东阳人,教授,从事岩石学、地球化学教学与研究。
更新日期/Last Update: 2006-03-20