中国东部早白垩世岩浆作用的伸展构造性质——以辽东半岛南部饮马湾山岩体为例
The extensional setting of the Early Cretaceous magmatism in eastern China:example from the Yinmawanshan pluton in southern Liaodong Peninsula
-
摘要: 饮马湾山岩体位于辽东半岛南部,侵位于辽南变质核杂岩之中。岩体主要由三种岩石组成,由外向里分别是片麻状花岗岩、斑状花岗岩和中细粒二长花岗岩类。其中片麻状花岗岩类主要岩石类型为石英二长闪长岩和花岗闪长岩,具有明显的片麻理构造,部分岩石具有明显的变形组构,其片麻理方向与变质核杂岩中拆离断层方向一致。似斑状花岗岩仅显示微弱片麻理,而细粒二长花岗岩则为明显的块状构造,表明该岩体为同伸展变形就位产物。锆石U-Pb同位素测定显示,该岩体不同岩相岩石具有大体一致的年龄,其形成于120～130Ma的早白垩世,而不是以前认为的三叠纪。该岩体岩石具有较大的地球化学成分变化范围,其中片麻状和似斑状岩石具有高Sr含量(>600ppm)、低Y、Yb含量、轻重稀土分馏强烈的特点;而细粒二长花岗岩则相对低Sr高Rb、低~(87)Rb/~(86)Sr比值。Sr-Nd同位素综合分析表明,饮马湾山花岗岩主要来源于下地壳,但较大的范围Mg~#、Sr、Nd同位素组成则表明可能有其它物质(如岩石圈地幔、新生地壳)参与成岩作用。上述研究充分地显示,我国东部早白垩世岩浆活动发育在伸展构造背景,并可能与岩石圈减薄存在密切的联系。
-
-
[1] ［1］Atherton M P, Pefford N. 1993. Generation of sodium-rich magmas from newly underplated basaltic crust. Nature, 362: 144-146
[2] ［2］ChenJF, Yan J, XieZ, XuX, Xing F M. 2001. Nd and Sr isotopic compositions of igneous rocks from the Lower Yangtze region in eastern China: constraints on sources. Phys. Chem. Earth (A),26:719 -731
[3] ［3］ChenRD, Li X D, Yang Y J, Zhan L H, Shan X D, Zhang, F S.1999. Bedding decollement structure of the Early Indosinian orogenic cycle in the south of Liaodong Peninsula. Liaoning Geol, 16:161 -169(in Chinese with English abstract)
[4] ［4］Collins W J. 1998, Evaluation of petrogenetic models for Lachlan Fold Belt granitoids: Implications for crustal architecture and tectonic models. Australia J. Earth Sci. , 45: 483-500
[5] ［5］Crawford A J, Falloon T J, Green D H. 1989. Classification,petrogenesis and tectonic setting of boninites. In: Crawford A J (ed.) , Boninites and related rocks, London: Unwin Hyman, 2-44
[6] ［6］Cui K Y, Pang Q B, Xu Y K. 1986. On principal feature of ductile nappe structure in south Liaoning , Liaoning Geol. Bull. , No. 2: 45-59(in Chinese with English abstract)
[7] ［7］Davies G A, Zheng Y D, Wang C, Darby B J, Zhang C H, Gehrels G.2001, Mesozoic tectonic evolution of the Yanshan fold and thrust belt, with emphasis on Hebei and Liaoning Provinces, northern China, in Hendrix M S, Davies G A (eds.), Paleozoic and Mesozoic tectonic evolution of central Asia: From continental assembly to intracontinental deformation: Geol. Soc. of Am. Memoir,194:171-198
[8] ［8］Defant M J, Drummond M S. 1990. Derivation of some modern arc magmas by melting of young subducted lithosphere. Nature, 347:662-665
[9] ［9］Eichelberger J C. 1980. Vesiculation of mafic magma during replenishment of silicic magma reservoirs. Nature, 288: 446-450
[10] ［10］Holden P, Halliday A N, Stepens W E. 1987. Neodymium and strontium isotope content of microdiorite enclaves points to mantle input to granitoid production. Nature, 330: 53-56
[11] ［11］Jahn B M, Wu F Y, Capdevila R, Fourcade S, Wang Y X, Zhao Z H.2001. Highly evolved juvenile granites with tetrad REE patterns: the Woduhe and Baerzhe granites from the Great Xing \'an (Khingan)Mountains in NE China. Lithos, 59:171 -198
[12] ［12］Kemp A I S, Hawkesworth C J. 2003. Granitic perspectives on the generation and secular evolution of the continental crust. In:Rudnick R L (ed.), Treatise on Geochemistry, Volume 3, The Crust, Amsterdam: Elsevier Pergamon, 349-410
[13] ［13］Li P Z, Yu J S. 1993. Nianzishan miarolitic alkaline granite stock,Heilongjiang:its ages and geological implications . Geochimica No.4:389 -398(in Chinese with English abstract)
[14] ［14］Li X H. 2000. Cretaceous magmatism and lithospheric extension in southeast China. J. Asian Earth Sci. , 18:293 -305
[15] ［15］Li Y G, Zhai M G, Yang J H, Miao L C, Guan H. 2004. Gold mineralization age of the Anjiayingzi gold deposit in Chifeng county,Inner Mongolia and implications for Mesozoic metallogenic explosion in North China. Sci. China (D), 47:115 -121
[16] ［16］Liaoning Bureau of Geology and Mineral Resources. 1989. Regional Geology of Liaoning Province . Beijing: Geological Publishing House, 438 -459 (in Chinese with English abstract)
[17] ［17］Lin J Q, Tan D J, Chi X G, Bi L J, Xie C F, Xu W L. 1992. Mesozoic granites in Jiao-Liao Paninsula . Beijing: Science Press, 1 -208(in Chinese with English abstract)
[18] ［18］LuXP, Wu F Y, Lin J Q, Sun D Y, Zhang Y B, Guo C L. 2004. Geochronological successions of the Early Precambrian granitic magmatism in southern Liaoning Peninsula and its constraints on tectonic evolution of the North China Craton... Chin. J. Geol. , 39:123 -139 (in Chinese with English abstract)
[19] ［19］Mao J W, Zhang Z H, Yu J J, Wang T Y, Niu B G. 2003. Geodynamic settings of Mesozoic large-scale mineralization in North China and adjacent areas-Implication from the highly precise and accurate ages of metal deposits. Sci. China (D) , 46: 838-851
[20] ［20］Martin H. 1999. The adakitic magmas: Modern analogue of Archean granitoids. Lithos, 46: 411-429
[21] ［21］Ratschbacher L, Hacker B R, Webb L E, McWilliams M, Ireland T,Dong S W, Calvert A, Chateigner D, Wenk H R. 2000. Exhumation of the ultrahigh-pressure continental crust in east central China: Cretaceous and Cenozoic unroofing and the Tan-Lu fault. J.Geophy. Res. , 105: 13303-13338
[22] ［22］Sun S S, McDonough W F. 1989. Chemical and isotopic systematics of oceanic basalts: Implications for mantle composition and processes.In: Saunders A D, Norry M J, (eds.) Magmatism in the ocean basins. Geol. Soc. Special Publ. , 42:313 -345
[23] ［23］Tatsumi Y, Maruyama S. 1989. Boninites and high-Mg andesites:tectonics and petrogenesis. In: Crawford A J (ed.) , Boninites,London: Unwin Hyman, 50 -71
[24] ［24］Vernon R H. 1984, Microgranitoid enclaves: globules of hybrid magma quenched in a plutonic environment. Nature, 304:438 -439
[25] ［25］Wang L G, Yiu Y M, McNaughton N J, Groves D I, Luo Z K, Huang J Z, Miao L C, Liu Y K. 1998. Constraints on crustal evolution and gold metallogeny in the Northwestern Jiaodong Peninsula, China,from SHRIMP U-Pb zircon studies of granitoids. Ore Geol. Rev. ,13: 275 -291
[26] ［26］Wei J H, Liu C Q, Li Z D, Zhao Y X. 2003. U-Pb, Rb-Sr isotopic dating of the diagenesis and mineralization of gold deposits in the Dandong area . Acta Geol. Sinica, 77: 113-119 (in Chinese with English abstract)
[27] ［27］Wu F Y, Sun D Y. 1999. The Mesozoic magmatism and lithospheric thinning in eastern China. J. Changchun Uni. Sci. Tech. , 29:313 -318 (in Chinese with English abstract)
[28] ［28］Wu F Y, Sun D Y, Zhang G L, Ren X W. 2000. Deep geodynamics of the Yanshain Movement. Geol. J. China Uni. , 6: 379-388 (in Chinese with English abstract)
[29] ［29］Wu F Y, Sun D Y, Li H M, Jahn B M, Wilde S A. 2002. A-type granites in Northeastern China: Age and geochemical constraints on their petrogenesis. Chem. Geol. , 187: 143-173
[30] ［30］WuF Y, Ge W C, Sun D Y, Guo C L. 2003. Discussions on the lithospheric thinning in eastern China. Earth Sci. Frontier, 10 (3):51-60 (in Chinese with English abstract)
[31] ［31］Xu Z Q, Li H B, Wang Z X, Li D Z. 1991. Crustal contraction and extension in southern Liaoning . Geol. Rev. , 37:193-202 (in Chinese with English abstract)
[32] ［32］Yang J H, Wu F Y, Wilde S A. 2003. Geodynamic setting of large-scale Late Mesozoic gold mineralization in the North China Craton: an association with lithospheric thinning. Ore Geol. Rev. , 23:125 -152
[33] ［33］Yang J H, Wu F Y, Chung S L, Wilde S A, Chu M F. 2004a, Multiple sources for the origin of granites: Geochemical and Nd/Sr isotopic evidence from the Gudaoling granite and its mafic enclaves, NE China. Geochim. Cosmochim. Acta (in press)
[34] ［34］Yang J H, Chung S L, Wu F Y, Lo C H, Wilde S A, Zhao Y, Liu W,Zhai M G.. 2004b. Rapid exhumation and cooling of the Liaonan metamorphic core complex inferred from 40 Ar/39 Ar thermochronology: Implication for the Late Mesozoic tectonic evolution of North China craton. Geological Society of American Bulletin (in review)
[35] ［35］Yang Z Z, Meng Q C, Gang J, Han X P. The metamorphic core complex structure in south Liaoning. Liaoning Geol. , 13:241 -250 (in Chinese with English abstract)
[36] ［36］YuanH L, Wu F Y, Gao S, Liu X M, Xu P, Sun D Y. 2003. Determination of U-Pb age and rare earth element concentrations of zircons from Cenozoic untrusions in northeastern China by laser ablation ICP-MS. Chin. Sci. Bull., 48:2411 -2421
[37] ［37］Zhai M G, Zhu R X, Liu J M, Meng Q R, Hou Q L, Hu S B, Li Z,Zhang H F, Liu W. 2004. Time range of Mesozoic tectonic regime inversion in eastern North China Block. Sci. China (D) , 47: 151 -159
[38] ［38］ZhaoZF, Zheng Y F, Wei C S, Wu Y B. 2003. Zircon U-Pb age,element and isotope geochemistry of Mesozoic mafic-ultramafic rocks at Shacun and Jiaziyan in north Dabie . Geol J Uni, 9:139-162(in Chinese with English abstract)
[39] ［39］Zhou X M, Li W X. 2000. Origin of Late Mesozoic igneous rocks in southeastern China: implications for lithosphere subduction and underplating of mafic magmas. Tectonophysics, 326: 269-287
[40] ［40］陈荣度,李显东,杨雅君,战丽华,单学东,张福生.1999.辽东半岛南部印支造山旋回早期的顺层滑脱构造.辽宁地质,16(3):161-169
[41] ［41］崔克英,庞庆邦,徐英奎.1986.论辽南韧性推覆构造特征.辽宁地质学报,No.2:45-59
[42] ［42］李培忠,于津生.1993.黑龙江碾子山晶洞碱性花岗岩岩体年龄及其意义.地球化学,4:389-398
[43] ［43］李永刚,翟明国,杨进辉,苗来成,关鸿.2003.内蒙古赤峰安家营子金矿成矿时代以及对华北中生代爆发成矿的意义.中国科学(D),33:960-966
[44] ［44］辽宁省地质矿产局,1989.辽宁省区域地质志.北京:地质出版社,438-459
[45] ［45］林景仟,谭东娟,迟效国,毕立君,谢才富,许文良.1992.胶辽半岛中生代花岗岩.北京:地质出版社,l-208
[46] ［46］路孝平,吴福元,林景仟,孙德有,张艳斌,郭春丽.2004.辽东半岛南部早前寒武纪花岗质岩浆作用的年代学格架.地质科学,39:123-138
[47] ［47］毛景文,张作衡,余金杰,王天义,牛宝贵.2003.华北及邻区中生代大规模成矿的地球动力学背景:从金属矿床年龄精测得到的启示.中国科学(D),33:289-299
[48] ［48］魏俊浩,刘丛强,李志德,赵永鑫.2003.论金矿床成矿年代的确定-以丹东地区成岩成矿Rb-Sr、U-Pb同位素年代为例.地质学报,77:113-119
[49] ［49］吴福元,孙德有,1999.中国东部中生代岩浆作用与岩石圈减薄.长春科技大学学报,29:313-318
[50] ［50］吴福元,孙德有,张广良,任向文.2000.论燕山运动的深部地球动力学本质.高校地质学报,6:379-388
[51] ［51］吴福元,葛文春,孙德有,郭春丽.2003.中国东部岩石圈减薄研究中的几个问题.地学前缘,10:5l-60
[52] ［52］许志琴,李海兵,王宗秀,李典致.1991.辽南地壳的收缩作用与伸展作用.地质论评,37:193-202
[53] ［53］杨中柱,孟庆成,江江,韩小平.1996.辽南变质核杂岩构造.辽宁地质,13:241-250
[54] ［54］袁洪林,吴福元,高山,柳小明,徐平,孙德有.2003.中国东部新生代侵人体的锆石激光探针年龄测定与稀土元素成分分析:对渐新世幔源岩浆底侵作用和地壳抬升的指示.科学通报,48:1511-1520
[55] ［55］翟明国,朱日祥,刘建明,孟庆任,侯泉林,胡圣标,李忠,张宏福,刘伟.2003.华北东部中生代构造体制转折的关键时限.中国科学(D),33:913-920
[56] ［56］赵子福,郑永飞,魏春生,吴元保.2003.大别山沙村和椒子岩基性-超基性岩锆石U-Pb定年、元素和碳氧同位素地球化学研究.高校地质学报,9:139-162
-
计量
- 文章访问数: 8138
- PDF下载数: 7123
- 施引文献: 0
下载: