全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...
地质学报  2004 

雅鲁藏布江缝合带中部硅岩地球化学特征及构造环境制约

, PP. 380-389

Keywords: 硅岩,构造背景,雅鲁藏布江缝合带,白垩纪

Full-Text   Cite this paper   Add to My Lib

Abstract:

硅岩在雅鲁藏布江缝合带广泛发育。在1∶25万萨嘎县幅、桑桑区幅区域地质调查中,在缝合带及其南侧宗卓组中识别出3种硅岩沉积组合:1嘎学群内与玄武岩伴生的硅岩;2构造混杂带内夹于页岩中的硅岩;3宗卓组内夹于页岩―岩屑石英杂砂岩的硅岩。在硅岩中分离出的放射虫组合时代为白垩纪。运用地球化学研究手段,对硅岩岩石组合、岩石化学、微量元素和稀土元素特征进行了综合分析,与玄武岩伴生的硅岩Al/(AlFeMn)为0.533~0.546<0.619(除9号样外),Ce/Ce*为0.67(平均),Lan/Ybn为0.83~1.37和Lan/Cen为0.82~2.23;夹于页岩中的硅岩Al/(AlFeMn)为0.557~0.619,Ce/Ce*为0.995~1.350,Lan/Ybn为0.71~1.03和Lan/Cen为0.68~0.98;宗卓组内的硅岩Al/(AlFeMn)为0.615~0.707>0.619,Ce/Ce*为0.94~1.14,Lan/Ybn为1.44~1.66和Lan/Cen为0.85~1.07。研究证实,3种背景的硅岩均反映非热水或生物成因。嘎学群内与玄武岩伴生的硅岩具深水盆地沉积特征;宗卓组中的硅岩具典型大陆边缘沉积环境特征;构造混杂带内的硅岩形成于近大陆边缘环境中

References

[1]  Murray R W,et al. 1991. Rare earth,major and trace elements in chart from the Franciscan complex and Monterey group, Califonia:assessing REE sources to fine-grained marine sediments.Geochimica Cosmochimica Acta,55(7): 1875~1895.
[2]  Murray R W. 1994. Chemical criteria to identify the depositional environment of chert: general principles and applications.Sedimentary Geology, 90: 213 ~ 232.
[3]  Rona P A. 1978. Criteria for recognition of hydrothermal mineral deposits in ocean crust. Economic Geology, 73 (2): 135 ~ 160.
[4]  Royden L H, Burchfiel B C. 1997. The Tibetan Plateau and surrounding regions. In: van der Pluijm B A, Marshak S, ed.Earth structure: An introduction to structural geology and tectonics, 416 ~ 423.
[5]  Qian Dingyu. 1982. Discovery of Melange in Zharzharla Pass,southwest Tibet. Scientia Geologica Sinca, (2): 166 ~ 168 (in Chinese with English abstract).
[6]  Shimizu H. 1977. Cerium in chert as an indication of marine enviroment of its formation. Nature, 266: 346~ 348.
[7]  Turekian K K and Wedepohl K H. 1961. Distrbution of the elements in some major units of the earth\'s crust. Geol. Soc. Amer. Bull. , 72:175~192.
[8]  Wan Xiaoqiao, Liang Dingyi, Li Guobiao. 2002. Palaeocene strata in Ganba, Tibet and influence of tectonism. Acat Geologica Sinica,76(2): 155~162 (in Chinese with English abstract).
[9]  Wang Dongan. 1981. Sediments rock in southern Tibet. Beijing:Science Press,52~71 (in Chinese with English abstract).
[10]  Wang Dongan, Chen Ruijun. 1995. Geochemically genetic criteria of Silicolites in YarlungZangbu Suture Belt and their geological significance. Acta Sedimentologica Sinica, 13 (1): 27 ~ 31 (in Chinese with English abstract).
[11]  Wu Haoruo, Wang Dongan. 1977b. Melange of Jangzi Distriet,southern Tibet. Sediments Rock Res. Beijing:Science Press, 120~127 (in Chinese).
[12]  Wu Haoruo. 1988. Jurassic and Cretaceous Radiolaria from Xialu cherts in the Yarlung Zangbo ophiolitic zone,southern Xizang and their geological significances. Treatie of Geology Institute, Chinese Academy, (3):191~ 212 (in Chinese with English abstract).
[13]  Xu Yulin,Wan Xiaoqiao,et al. 1990. Biostratigraphy of Xizang (Tibet)in the Jurassic, Cretaceous and Teriary Periods. Wuhan: China University of Geosciences Press ,58~112 (in Chinese).
[14]  Yamamoto K. 1987. Geochemical characteristics and deposition environment of cherts and assoiciated rocks in the Franciscan and shimena terranes. Sediment Geology, 52: 65~108.
[15]  Yu Guangming, Wang Chengshan. 1990. Sedimentary Geology in Tibetan Tethys. Beijing: Geological Pulishing House, 50~53 (in Chinese).
[16]  丁林,钟大赉.1995.滇西昌宁-孟连带古特提斯硅岩稀土元素和铈异常特征.中国科学(B辑),25(1):93~100.
[17]  丁林.2003.西藏雅鲁藏布江缝合带古新世深水沉积和放射虫动物群的发现及对前陆盆地演化的制约.中国科学(D辑),33(1):47~58.
[18]  钱定宇.1982.西藏札札拉发现混杂堆积.地质科学,(2):166~168.
[19]  万晓憔,梁定益,李国彪.2002.西藏岗巴古新世地层及构造作用的影响.地质学报,76(2):155~162.
[20]  王东安.1981.西藏南部沉积岩.北京:科学出版社,52~71
[21]  王连城.1982.西藏南部的滑塌堆积.地质科学,(2):201~206.
[22]  吴浩若,王东安,王连城.1977a.西藏南部拉孜江孜一带的白垩系.地质科学,21(1):250~252.
[23]  吴浩若.1988.西藏南部雅鲁藏布蛇绿岩带下鲁硅岩中的侏罗白垩纪放射虫化石及其地质意义.中国科学院地质研究所集刊,(3):191~212.
[24]  西藏地质矿产局.1997.西藏岩石地层.武汉:中国地质大学出版社,203~212.
[25]  尹集祥,孙晓兴,闻传芬,孙亦因.1988.西藏南部吉隆县党拉至萨嘎县(加加)地段中生代地层.中国科学院地质研究所集刊,(3):96~118.
[26]  西藏自治区区域地质调查大队.1983.1:1000000日喀则幅、亚东幅区域地质调查报告.199~226.
[27]  Adachi M, Yamamoto K, Sugisaki F. 1986. Hydrothermal chert and associated rocks from the northern pacific: their geological significonce as indication of oceanic Ridge activity. Sedimentary Geology, 47 (12):125~148.
[28]  Bureau of Geology and Mineral Resources of Xizang Autonomous Region. 1993. Regional Geology of Tibet. Beijing : Geological Publishing House, 137 ~ 224 (in Chinese).
[29]  Bostrom K,Kraemer T, Gartner S. 1973. Provenace and accumulation rates of opline silica , Al, Fe, Ti, Mn, Ni, and Co in Pacific pelagic sediment. Chemical Geology, 11 ( 1/2 ): 123 ~ 148.
[30]  Chen Guoming, Li Guangchen, Qu Jingchuan. 1984. Themelanges and their tectonic significance in the southern Xizang. Himalaya Geology I. Beijing: Geological Publishing House, 19~ 26 (in Chinese with English abstract).
[31]  Ding Lin, Zhong Dalai. 1995. Rare earth elements and Cerium anormity characteristics of cherts in the Paleotethys ChangningMenglian orogenic belt, western Yunnan. Science in China (Series B). 25(1): 93~100 (in Chinese).
[32]  Gao Yanlin, Tang Yaoqing. 1984. Melanges in the Southern Xizang.Himalaya Geology Ⅱ . Beijing: Geological Publishing House, 27~44 (in Chinese with English abstract).
[33]  Gary H G, Dale L R, et al. 1996. Provenance and depositional setting of Paleozoic chert and Argilite Sierra NEVADA, California.Journal of Sedimentary Resarch, 66(1):107~118.
[34]  Murray R W,Buchholtzten Brink M R,Jones D L,Gerlach D C, Russ G.1990. Rare earth elements as indicators marine depositional environments in chert and shale. Geology, 18: 268 ~ 271.
[35]  Murray R W, et al. 1992. Inter-Oceanic variation in the rare earth,major and trace elements depositional chemistry of chert:perspectives gained from the DSDP and ODP record. Geochemical Cosmochemical Acta, 58:1897 ~ 1913.
[36]  Sun Lixin, Zhang Zhenli, et al. 2002. Discovery of Later Cretaceous radiolarian faunas from melange in Zhongba, southern Tibet.Geological Bulletin of China, (3):172~174 (in Chinese).
[37]  Wang Chengshan, Li Xianghui, Hu Xiumian. 2003. Age of Initial collision of India with Asia: Review and constraints from sediments in Southern Tibet. Acta Geologica Sinica, 77 (1): 16~24 (in Chinese with English abstract).
[38]  Wang Liancheng. 1982. On the Olistostromes in Southern Xizang.Scientia Geologica Sinca, (2):201~ 206 (in Chinese with English abstract).
[39]  Wo Haoruo, Wang Dongan, Wang Liancheng. 1977a. The Cretaceous of Laze-Jiangze Distriet, Southern Xizang. Scientia Geologica Sinca, 21 (1): 250~ 252 (in Chinese with English abstract).
[40]  Yamamoto K. 1983. Geochemical study of Triassic bedded cherts from kamiaso, Gifu Prefecture. J. Ged. Soc. Jap. ,89 : 143~162.
[41]  Yin Jixiang,Sun Xiaoxing, Wen Chanfen,Sun Yiyin. 1988. Mesozoic stratigraphy along the highway from Dangla pass in Gyirongcounty to saga (Gya\'gya) county in south Xizang. Bulletin of the Geological Institute, Academia Sinica, (3): 96~118 (in Chinese with English abstract).
[42]  陈国铭,李光岑,曲景川.1984.西藏南部混杂堆积及其地质意义.喜马拉雅地质Ⅱ.北京:地质出版社,19~26.
[43]  高延林,汤耀庆.1984.西藏南部的构造混杂体.喜马拉雅地质Ⅱ.北京:地质出版社,27~44.
[44]  孙立新,张振利,等.2002.西藏仲巴晚白垩纪硅岩放射虫化石的发现.地质通报,(3):172~174.
[45]  王成善,李祥辉,胡修棉.2003.再论印度-亚洲大陆碰撞的起动时间.地质学报,78(1):16~24.
[46]  王东安,陈瑞君.1995.雅鲁藏布江缝合带硅岩的地球化学成因标志及其地质意义.沉积学报,13(1):27-31.
[47]  吴浩若,王东安.1977b.西藏南部江孜地区的混杂堆积.沉积岩石学研究.北京:科学出版社,120~127.
[48]  西藏地质矿产局.1993.西藏自治区区域地质志.北京:地质出版社,137~224.
[49]  徐钰林,万晓樵,苟宗海,张启华.1990.西藏侏罗,白垩,第三纪生物地层.武汉:中国地质大学出版社,58~112.
[50]  余光明,王成善.1990.西藏特提斯沉积地质.北京:地质出版社,50~53.
[51]  Baltuck M. 1982. Provenance and distribution of Tethyan pelagic and hemipelagic siliceous sediments, Pindos Mountains, Greece.Sedimentary Geology, 31: 63~68.
[52]  Bureau of Geology and Mineral Resources of Xizang Autonomous Region. 1997. Stratigraphy ( Lithostratic ) of Xizang Autonomoous Region. Wuhan: China University of Geosciences Press,203~212 (in Chinese).
[53]  Chandhuri S, Cullers R L. 1979. The distribution of REE in deeply buried GULF coast sediments. Chem. Geol. ,24: 327~338.
[54]  Condic K C. 1991. Anther look at rare earth elements in seawater.Geochim Cosmochim Acta, 55: 2527 ~ 2531.
[55]  Ding Lin. 2003. Paleocene deep-water sediments and radiolarian faunas: Implications for evolution of Yarlung Zangbo foreland basin, southern Tibet. Science in China (Series D), 33(1 ): 47 ~58 (in Chinese).
[56]  Matsuoka A,et al. 2000. Paleoceanography and evolution of the CenoTethys: Micropaleontological evidence from Pelagic sediments in the Yarlung Zangbo suture Zone,Southern Tibet. Earth Science Frontiers (Suppl), 7:119.
[57]  Molnar P, Pardo-Casas F, Stock J. 1988. The Cenozoic and Late Cretaceous evolution of the Indian Ocean Basin: uncertainties in the reconstructed positions of the Indian, African and Antarctic plates. Basin Res. ,1: 23~40.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133