Redefinition of High Pressure Metamorphic Rocks from West Kunlun Orogen and Its Tectonic Significance
-
摘要: 新疆西昆仑塔什库尔干以东解体出一套“斜长角闪片麻岩-矽线石榴黑云斜长片麻岩组合”。岩石地球化学特征表明，斜长角闪片麻岩原岩为基性火山岩，具有岛弧玄武岩的特征，在构造环境判别图中（TiO2/10-MnO-P2O5、Zr-TiO2、Hf/3-Th-Nb/16），样品均落入岛弧环境；矽线石榴黑云斜长片麻岩原岩为过铝质碎屑岩，构造环境判别图（K2O/Na2O-SiO2、La-Th-Sc、Th-Sc-Zr/10）显示，其形成环境为活动大陆边缘的岛弧环境；LA-ICP-MS锆石同位素年代学表明，斜长角闪片麻岩形成于早寒武世，并经历了志留纪、二叠纪、白垩纪、中新世4期岩浆热事件。该区高压变质岩的重新厘定对于探讨西昆仑的构造演化具有重要意义。Abstract: A set of "Grt-Pl-Hbl gneiss and Sil-Grt-Bit-Pl gneiss" has been disintegrated from the eastern part of Tashkurghan area in West Kunlun.According to the geochemical characteristics study, the Grt-Pl-Hbl gneiss was derived from basic volcanic rocks, with the features of island-arc basalt.In the discrimination diagram, their samples are plotted in the field of island-arc basalt.The Sil-Grt-Bit-Pl gneiss was sourced from clastic rocks.In the discrimination diagram, their samples are plotted in the active continental margin and in the continental arc.According to the isotope chronology, the Grt-Pl-Hbl gneiss was formed in early Cambrian epoch.Since the formation of magma, the Grt-Pl-Hbl gneiss has experienced four notable thermal events in Silurian, Permian, Cretaceous and Miocene.The redefinition of high pressure metamorphic rocks in this area has a great significance to discussing the tectonic evolution in West Kunlun.
-
Keywords:
- geochemistry /
- U-Pb dating /
- tectonic significance
-
-
潘裕生.西昆仑山构造特征及演化[J].地质科学,1990,(3):224-232. PAN Yusheng.Tectonic Features and Evolution of The Western Kunlun Mountain Region[J].Scientia Geologica Sinica,1990,(3):224-232.
邓万明.喀喇昆仑-西昆仑地区蛇绿岩地质特征及其大地构造意义[J].岩石学报,1995,11(增刊):98-111. DENG Wanming.Geological Features of Ophiolite and Tectonic Significance in the Karakorum-West Kunlun Mts[J].Acta Petrologica Sinica,1995,11:98-111.
李向东,王克卓.塔里木盆地西南及邻区特提斯格局和构造意义[J].新疆地质,2000,18(2):113-120. LI Xiangdong,WANG Kezhuo.The Tethys Framwork and Its Tectonic Signeficance of Southwest Tarim and The Adjacent Region[J].Xinjiang Geology,2000,18(2):113-120.
曲军峰,张立飞,艾永亮,等.西昆仑塔什库尔干高压麻粒岩PT轨迹、SHRIMP锆石定年及其大地构造意义[J].中国科学(D辑),2007,37(4):429-441. QU Junfeng,ZHANG Lifei,AI Yongliang,et al.The metamorphic P-T paths、LA-ICP-MS zircon dating and Its tectonic significance in the Taxkorgan area,West Kunlun[J].Science in China,2007,37(4):429-441.
王建平.西昆仑塔什库尔干混杂岩的地质特征及其大地构造意义[J].地质通报,2008,27(12):2057-2066. WANG Jianping.Geological features and tectonic significance of mélange zone in the Taxkorgan area,West Kunlun[J].Geological Bulletin of China,2008,27(12):2057-2066.
郭坤一,张传林,王爱国,等.西昆仑首次发现石榴二辉麻粒岩[J].资源调查与环境,2003,24(2):79-81. GUO Kunyi,ZHANG Chuanlin,WANG Aiguo,et al.Discovery of pyrigarnite in Western Kunlun[J].Resources Survey and Environment,2003,24(2):79-81.
许志琴,戚学祥,刘福来,等.西昆仑康西瓦加里东期孔兹岩系及地质意义[J].地质学报,2004,78(6):733-743. XU Zhiqiang,QI Xuexiang,LIU Fulai,et al.The Kangxiwar Caledonian Khondalite Series in West Kunlun,China,and Its Geological Significance[J].Acta Geologica Sinica,2004,78(6):733-743.
杨文强,刘强,曹玉亭,等.西昆仑塔什库尔干印支期(高压)变质事件的确定及其构造地质意义[J].中国科学:地球科学,2011,41(8):1047-1060. YANG Wenqiang,LIU Qiang,CAO Yuting,et al.Geochronological evidence of Indosinian (high-pressure)metamorphic event and its tectonic significance in Taxkorgan area of the Western Kunlun Mountains, NW China[J].Sci China Earth Sci,2011,41(8):1047-1060.
刘文平,王核,仝来喜,等.西昆仑塔什库尔干布伦阔勒群的岩石地球化学特征及变质P-T轨迹[J].岩石学报,2013,29(3):923-937. LIU Wenping,WANG He,TONG Laixi,et al.Geochemical characteristics and metamorphic P-T paths of the Bulunkuole Group in Taxkorgan,Western Kunlun[J].Acta Petrologica Sinica,2013,29(3):923-937.
高晓峰,校培喜,康磊,等.新疆塔什库尔干塔阿西一带火山岩成因及地质意义[J].地球科学-中国地质大学学报,2013,38(6):1169-1182. GAO Xiaofeng,XIAO Peixi,KANG Lei,et al.Origin of the Volcanic Rocks from the Ta axi Region,Taxkorgan Xinjiang and Its Geological Significance[J].Earth Science-Journal of China University of Geosciences,2013,38(6):1169-1182.
陈俊魁,燕长海,张旺生,等.新疆塔什库尔干地区磁铁矿床地质特征及找矿方向[J].地质调查与研究,2011,34(3):179-189. CHEN Junkui,YAN Changhai,ZHANG Wangsheng,et al.Geological Characteristics and Prospecting Direction of the Magnetite Iron Deposits in the Taxkorgan,Xinjiang[J].Geological Survey and Research,2011,34(3):179-189.
潘裕生,李幼铭,李立敏,等.喀喇昆仑山-昆仑山地区地质演化[M].北京:科学出版社,2000. 张传林,于海峰,王爱国,等.西昆仑西段三叠纪两类花岗岩年龄测定及其构造意义[J].地质通报,2005,79(5):645-652. ZHANG Chuanlin,YU Haifeng,WANG Aiguo,et al.Dating of Triassic Granites in the Western Kunlun Mountains and Its Tectonic Significance[J].Acta Geologica Sinica,2005,79(5):645-652.
崔建堂,王焗川,边小卫,等.西昆仑康西瓦一带早古生代石英闪长岩的地质特征及其锆石SHRIMP U-Pb测年[J].地质通报,2006,25(12):1450-1457. CUI Jiantang,WANG Juchuan,BIAN Xiaowei,et al.Geological characteristics of Early Paleozoic quartz diorite in the vicinity of Kangxiwar,West Kunlun,China and its zircon SHRIMP U-Pb dating[J].Acta Geologica Sinica,2006,25(12):1450-1457.
柯珊,罗照华,莫宣学,等.帕米尔构造结塔什库尔干碱性杂岩同位素年代学研究[J].岩石学报,2008,24(2):315-324. KE Shan,LUO Zhaohua,MO Xuanxue,et al.The geochronology of Taxkorgan alkali complex,Pamir syntax[J].Acta Petrologica Sinica,2008,24(2):315-324.
柯珊,莫宣学,罗照华,等.塔什库尔干新生代碱性杂岩的地球化学特征及岩石成因[J].岩石学报,2006,22(4):905-915. KE Shan,LUO Zhaohua,MO Xuanxue,et al.Petrogenesis and geochemistry of Cenozoic Taxkorgan alkali complex and its geological significance[J].Acta Petrologica Sinica,2008,22(4):905-915.
林清茶,夏斌,张玉泉.西昆仑-喀喇昆仑地区钾质碱性花岗岩Ar-Ar年龄:以洋湖、昝坎和苦子干岩体为例[J].矿物岩石,2006,26(2):66-70. LIN Qingcha,XIA Bin,ZHANG Yuquan.Ar-Ar dating of Potassic Alkali-Rocks in the Western Kunlun-Kalakorum Mountains[J].Jmineral Petrol,2006,26(2):66-70.
辜平阳,李荣社,何世平,等.西藏那曲县北聂荣微陆块聂荣岩群中斜长角闪岩-Rodinia超大陆裂解的地质记录[J].岩石矿物学杂志,2012,31(2):145-154. GU Pingyang,LI Rongshe,HE Shiping,et al.The amphibolite from Nyainrong Rock Group in northern Nagqu:geological records of break-up of the supercontinent Rodinia[J].Acta Petrologica Et Mineralogica,2012,31(2):145-154.
邓兴梁,舒良树,朱文斌,等.新疆兴地断裂带前寒武纪构造-岩浆-变形作用特征及其年龄[J].岩石学报,2008,24(12):2800-2808. DENG Xingliang,SHU Liangshu,ZHU Wenbin,et al.Precambrian tectonism,magmatiam,deformation and geochronology of igneous rocks in the Xindi fault zone,Xinjiang[J].Acta Petrologica Sinica,2008,24(12):2800-2808.
康磊,校培喜,高晓峰,等.西昆仑康西瓦断裂西段斜长片麻岩LA-ICP-MS锆石U-Pb定年及其构造意义[J].地质通报,2012,31(8):1244-1250. KANG Lei,XIAO Peixi,GAO Xiaofeng,et al.LA-ICP-MS zircon U-Pb dating of garnet-bearing muscovite-biotite plagioclase gnesis in weatern Kangxiwar fault of Western Kunlun and its tectonic significance.[J].Acta Geologica Sinica,2012,31(8):1244-1250.
张旗,潘国强,李承东,等.花岗岩构造环境问题:关于花岗岩研究的思考之三[J].岩石学报,2007,23(11):2683-2698. ZHANG Qi,PAN Guoqiang,LI Chengdong,et al.Are discrimination diagrams always indicative of correct tectonic settings of granites?Some crucial questions on granite study(3)[J].Acta Petrologica Sinica,2007,23(11):2683-2698.
耿全如,潘桂堂,王立全,等.班公湖-怒江带、羌塘地块特提斯演化与成矿地质背景[J].地质通报,2011,30(8):1261-1274. GENG Quanru,PAN Guitang,WANG Liquan,et al.Tethyan evolution and metallogenic geological background of the Bangong Co-Nujiang belt and the Qiangtang massif in Tibet[J].Geological Bulletin of China,2011,30(8):1261-1274.
李兴振,尹福光.东昆仑与西昆仑地质构造对比研究之刍议[J].地质通报,2002,21(11):778-783. LI Xingzhen,YIN Fuguang.Comparative study of the geological structure of the Eastern and West Kunlun Mountainst[J].Geological Bulletin of China,2002,21(11):778-783.
刘增乾,徐宪,潘桂棠,等.青藏高原大地构造与形成演化[M].北京:地质出版社,1990:1-194. 肖序常,刘训,高锐,等.西昆仑及邻区岩石圈结构构造演化:塔里木南-西昆仑多学科地学端面简要报道[J].地质通报,2002,21(2):63-68. XIAO Xuchang,LIU Xun,GAO Rui,et al.Lithospheric structure and tectonic evolution of the West Kunlun and Its adjacent areas-Brief report on the South Tarim-West Kunlun Multidisciplinary geoscience transect[J].Geological Bulletin of China,2002,21(2):63-68.
吴世敏,马瑞士,卢华复,等.西昆仑早古生代构造演化及其对塔西南盆地的影响[J].南京大学学报,1996,32(4):650-658. WU Shimin,MA Ruishi,LU Huafu,et al.The Weatern Kunlun Paleozoic tectonic evolution and Its effect on SW Tarim Basin[J].Journal of Nanjing University,1996,32(4):650-658.
周能武,陈邦学,朱彦菲,等.西昆仑岔路口西花岗岩地球化学特征及构造意义[J].新疆地质,2016,34(4):437-449. ZHOU Nengwu,CHEN Bangxue,ZHU Yanfei,et al.Geochemistry and tectonic significance of Granite from the West of Chalukou in Western Kunlun,NW China[J].Xinjiang Geology,2016,34(4):437-449.
JI W H, LI R S, CHEN S J, et al.The discovery of Palaeoproterozoic volcanic rocks in the Bulunkuoler Group from the Tianshuihai Massif inXinjiang of Northwest China and its geological significance[J].Sci China Earth Sci, 2011, 54:61-72.
BHATIA M R.Rare earth element geomchemiastry of Australian Paleozoic graywackes and mudrocks:provenance and tectonic control[J].Sedimentary Geology,1985,45(1):97-113.
ROSER B P,KORSCH R J.Provenance signature of sandstone-mudstone suites determined using discriminant function analysis of major-element data[J].Chemical Geology,1988,67(1):119-139.
ROSER B P,KORSCH R J.Determination of tectonic setting of sandston-mudstone suites using SiO2 content and K2O/Na2O ratio[J].Geology,1986,94(5):23-49.
计量
- 文章访问数: 2619
- HTML全文浏览量: 0
- PDF下载量: 2736
下载:
