西昆仑山阿卡孜岩体锆石SHRIMP定年及其地球化学特征
Zircon SHRIMP dating and geochemistry characteristics of Akazi rock mass of Western Kunlun.
-
摘要: 西昆仑山阿卡孜岩体是该区已知的最古老侵入体。岩体侵入于太古代赫罗斯坦群(TTG岩系)中。获得最新的单颗粒锆石SHRIMP年龄为2426±46Ma。岩石地球化学研究表明,岩石具有高碱度富K特征;∑REE为409.94×10~(-6)～787.76×10~(-6),δEu为0.48～0.73;微量元素显示富集大离子元素。综合分析该岩体地质地球化学特征,认为该岩体形成于晚太古代～古元古代初期碰撞后拉张背景,是TTG岩系(赫罗斯坦群)重熔的结果。这对研究西昆仑山早前寒武纪陆壳增生及构造演化提供了重要的地质资料。
-
关键词:
- 西昆仑 /
- 阿卡孜岩体 /
- 锆石SHRIMP定年 /
- 地球化学
-
Key words:
- Western Kunlun /
- Akazi pluton /
- Zircon SHRIMP age /
- Geochernisry
-
-
[1] ［1］Arth J G. 1979. Some trace element in trondhjemites - their implications to magma genesis and Paleotetonic setting; Trondhjemites, dacites, and related rocks. Barker F. (ed.), Elsevier Scientifics Pub. Co. 123-132
[2] ［2］Batchelor R A, Bowden P. 1985. Petrogenetic interpretation of granitoid rock series using multication parameters. Chem. Geol., 48: 43-55
[3] ［3］Boynton W V. 1984. Cosmochemistry of the rare earth elements: Meterorite studies. In: Henderson P (ed.). Rare element geochemistry. Amsterdam: Elsevier Science Publishers. 63-114
[4] ［4］Ding Daogui, Wang Daoxuan, Liu Weixin et al. 1996. The Western Kunlun orogenic belt and basin. Beijing: Geological Publishing House. 72-105 (in Chinese with English abstract)
[5] ［5］G. Nelson Eby. 1992. Chemical subdivision of the A-type granitoids: Petrogenetic and tectonic implications. Geology, 20: 641-644
[6] ［6］Hong Dawei, Wang Shikunang, Han Baofu and Le Manyuan. 1995. Tectonic classification and discrimination sign of alkaline granite. Science in China (series D), 25(4): 18-426 (in Chinese)
[7] ［7］Hu Aiqin, Zhang Guoxin, Zhang Qianfeng and Cheng Yibing. 1999, The age and crust growth of the base of Tianshan orogen, constraint from Nd isotope. Science in China (Ser. D) 29(2):104-111 (in Chinese)
[8] ［8］Jiang C F, Wang Z Q, Li J Y. 2000. Opening closing tectonics of Central Orogen. Beijing: Geological Publishing House, 7-13 (in Chinese)
[9] ［9］Jiang Yaohui, Rui Xingjian and He Jurui. 1999. Tectonic type of Caledonian granitoids and tectonic significance in the Western Kunlun Mts. Acta Petrologica Sinica, 15(1): 105-115 (in Chinese with English abstract)
[10] ［10］Li Yonggang, Guo Jinghui and Zhai Mingguo et al. 1994. Origin and tectonic significance of late Archean potassic granite from north Shanxi and northwestern Hebei provinces, China. In: Qian Xianglin and Wang Renmin (eds.). Geological evoltion of the granulite terrain in north part of the North China Craton. Beijing: Seismological Press. 187-198 (in Chinese with English abstract)
[11] ［11］Li Jianghai. 1998. Review of the studies on early Precambrian geology and deep-crustal-level tectonism. Geological Journal of China Universities, 4(3): 303-312 (in Chinese with English abstract)
[12] ［12］Peceerillo A, Taylor S R. 1976. Geochemistry of Eocene calc-alkaline volcanic rocks from the Kastamonu area, Northern Turky. Contrib. Mineral. Petrol., 58: 68-81
[13] ［13］Pearce J A, Harris N B W, Tindle A G. 1984. Trace elements discrimination diagrams for the tectonic interpretation of granitic rocks. J. Petrol., 25(4), 956-983
[14] ［14］Pearce J A. 1982. Trace element characteristics of lavas from destructive plate boundaries. In: Thorpe R S (ed.). Andesites. New York: John Wiley & Sons, 525-548
[15] ［15］Whalen J B, Currie K L, Chappell B W. 1987. A-type granites: geochemical characteristics, discrimination and petrogenesis. Contrib. Mineral. Petrol., 95: 407-419
[16] ［16］Whalen J B, John A P, Vicki J M et al. 2002. A Mainly Crstal Origin for Tonalitic Granitoid Rocks, Superior Province, Canada:Implications for Late Archean Tectonomagmatic Processes. Journal of Petrology, 43 (6): 1551-1570.
[17] ［17］Tanja E Z, Peter E van K. 2001. Middle Archean continent formation by crustal delamination. Geology, 29(12): 1083-1086
[18] ［18］Wang Yuzhen and Fang Xilian. 1987. Primary study on granite distribution of time and space in the Karakorum-Western Kunlun Mts. Xijinag Geology, 5(1), 10-24 (in Chinese with English abstract)
[19] ［19］Wright J B. 1969. A simple alkalinity ratio and its application to questions of non-orogenic granite genesis. Geol. Mag., 106(4): 370-384
[20] ［20］Xu Ronghua, Zhang Yuquan and Xie Yingwen. 1994. Discovery of the Paleozoic tectonic-magamatic belt in north of Western Kunlun. Scientia Geologica Sinica, 29(4): 313-327 (in Chinese with English abstract)
[21] ［21］Xu Ronghua, Zhang Yuquan. 1996. Isotopic geochemistry of plutonic rocks. In: Pan Yusheng (ed.). Geological evolution of the Karakorum and Kunlun Mountains. Beijing: Seismological Press, 138-200
[22] ［22］Yuan Chao, Sun Ming and Li Jiliang et al. 1999. Ages and possible source of the two granite plutons in middle of Western Kunlun. Chinese Science Bulletin, 44(5): 534-537(in Chinese)
[23] ［23］Zhang Yuquan, Zhu Binquan, Xie Yinwen, Harrison T M and Kidd W S F. 1998. The uplifting rates for the Western Qinhai-Xizang Plateau: interpretation of 40Ar-39Ar dating for the granites in the area from Yecheng to Shiquanhe. Acta Petrologica Sinica, 14(1): 11-22 (in Chinese with English abstract)
[24] ［24］丁道桂,王道轩,刘伟新. 1996. 西昆仑造山带与盆地. 北京:地质出版社. 72-105
[25] ［25］洪大卫,王式洸,韩宝福,勒满元. 1995. 碱性花岗岩的构造环境分类及其鉴别标志. 中国科学(B辑). 25(4): 418-426
[26] ［26］姜春发,王宗起,李锦轶. 2000. 中央造山带开合构造. 北京:地质出版社. 7-13
[27] ［27］姜耀辉,芮行健,贺菊瑞. 1999. 西库仑山加里东期花岗岩类构造的类型及其大地构造意义.岩石学报.15(1):105-115
[28] ［28］李永刚,郭敬辉,翟明国,张毅刚,刘文军. 1994. 晋翼交界地区太古宙末钾质花岗岩的成因及构造意义.见:钱祥麟,王仁民主编:华北北部麻粒岩带地质演化. 北京:地质出版社. 187-198
[29] 李江海. 1998. 早前寒武纪地质及深成构造作用研究进展. 高校地质学报. 4(3):303-312
[30] ［30］胡霭琴,张国新,张前锋,陈义兵. 1999. 天山造山带基底时代和地壳增生的Nd同位素制约. 中国科学(D)辑. 29(2): 104-111
[31] ［31］汪玉珍, 方锡廉. 1987. 西昆仑山、喀喇昆仑山花岗岩类时空分布规律的初步探讨. 新疆地质. 5(1): 10-24
[32] ［32］许荣华,张玉泉,谢应雯. 1994. 西昆仑山北部早古生代构造-岩浆带的发现.地质科学. 29(4):313-327
[33] ［33］袁超,孙敏,李继亮等. 1999. 西昆仑中带两个花岗岩体的年龄及可能的源区. 科学通报. 44(5): 534-537
[34] ［34］张玉泉,朱炳泉,谢应雯等. 1998. 青藏高原西部的抬升速率:叶城-狮泉河花岗岩40Ar-39Ar年龄的地质解释. 岩石学报. 14(1):11-21
-
计量
- 文章访问数: 6840
- PDF下载数: 5669
- 施引文献: 0
下载: