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HAN Fei, HUANG Yonggao, LI Yingxu, JIA Xiaochuan, YANG Xuejun, YANG Qingsong, YAN Gang, LI Daoling. 2019: The identification of the Eocene magmatism and tectonic significance in the middle Gangdise magmatic belt, Nanmulin area, Tibet. Geological Bulletin of China, 38(9): 1403-1416.
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The Nanmulin rock is located in the southern Gangdise center. In this study, the authors conducted systematical zircon LA-ICP-MS U-Pb dating and whole-rock geochemical analysis for the monzonitic granite in Nanmulin. The zircon U-Pb analyses demonstrate that the crystallization and emplacement age of the plutons is 50.24 ±0.68Ma, suggesting Eocene magmatic activities. It is an important part of the Gangdise batholith. Geochemical characteristics show that Rittmann index(σ) is 1.66~1.94, implying calc-alkaline series. The Al2O3 varies in the range of 11.82%~12.45%, whereas A/CNK varies in the range of 1.11~1.15, suggesting peraluminous characteristics. The granite is characterized by high SiO2(77.4%~78.18%, averagely 77.82%), high K (shoshonite series). Rb, Th, U and LREE are enriched but Nb, Ta, Zr and HREE are depleted, suggesting arc-related or earth crust geochemical affinities. Sm/Nd varies from 0.45 to 0.57, averagely 0.53, suggesting the deep source characteristics of magma. (La/Yb)N is high, averagely 9.25, suggesting enrichment of the LREE and depletion of HREE, with clear negative Eu anomaly. In summary, the process of granite petrogenesis resulted from subduction or breakoff of the Tethyan Ocean crust experiencing dehydration. This action resulted in partial melting of overlying mantle wedge and caused upward migration of basaltic magma near Moho. Huge thermal baking forces caused partial melting of the lower crust (clay-rich or argillaceous rocks). Magma mixing occurred from both basaltic magma and felsic magma. Nanmulin granite with MME was formed. This study provides isotope age evidence on the time of the closure of the Tethyan Ocean and Indian-Asian continental collision. Moreover, it enriches the diagenetic model and geochemical characteristics of Gangdise rock.
|
潘桂棠, 刘玉平, 郑来林, 等.青藏高原碰撞构造与效应[M].广州:广东科技出版社, 2013:1-3.
|
|
莫宣学, 赵志丹, 周肃, 等.印度-亚洲大陆碰撞的时限[J].地质通报, 2007, 26(10):1240-1244. doi: 10.3969/j.issn.1671-2552.2007.10.002
|
|
莫宣学.岩浆作用与青藏高原演化[J].高校地质学报, 2011, 17(3):351-367. doi: 10.3969/j.issn.1006-7493.2011.03.001
|
|
马昭雄, 张彤, 黄波, 等.西藏错龙错晚三叠世粗粒巨斑二长花岗岩锆石U-Pb年龄和地球化学特征[J].地质通报, 2018, 37(7):1202-1212. http://dzhtb.cgs.cn/gbc/ch/reader/view_abstract.aspx?file_no=20180705&flag=1
|
|
莫宣学, 董国臣, 赵志丹, 等.西藏冈底斯带花岗岩的时空分布特征及地壳生长演化信息[J].高校地质学报, 2005, (3):281-290. doi: 10.3969/j.issn.1006-7493.2005.03.001
|
|
孟元库, 许志琴, 高存山, 等.藏南冈底斯带中段始新世岩浆作用的厘定及其大地构造意义[J].岩石学报, 2018, (3):513-546. http://d.old.wanfangdata.com.cn/Periodical/ysxb98201803001
|
|
纪伟强, 吴福元, 锺孙霖, 等.西藏南部冈底斯岩基花岗岩时代与岩石成因[J].中国科学(D辑), 2009, 39(7):849-871. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=zgkx-cd200907002
|
|
张宏飞, 徐旺春, 郭建秋, 等.冈底斯南缘变形花岗岩错石U-Pb年龄和Hf同位素组成:新特提斯洋早侏罗世俯冲作用的证据[J].岩石学报, 2007, 23(6):1347-1353. doi: 10.3969/j.issn.1000-0569.2007.06.011
|
|
王玉净, 松冈笃.藏南泽当雅鲁藏布缝合带中的三叠纪放射虫[J].微体古生物学报, 2002, 19(3):215-227. doi: 10.3969/j.issn.1000-0674.2002.03.001
|
|
李化启, 蔡智慧, 陈松永, 等.拉萨地体中的印支期造山事件及年代学证据[J].岩石学报, 2008, 24(7):1595-1604. http://www.cnki.com.cn/Article/CJFDTotal-YSXB200807016.htm
|
|
李化启, 许志琴, 杨经绥, 等.拉萨地体内松多榴辉岩的同碰撞折返:来自构造变形和40Ar/39Ar年代学的证据田[J].地学前缘, 2011, 18(3):66-78. http://d.old.wanfangdata.com.cn/Periodical/dxqy201103008
|
|
张雨轩, 解超明, 于云鹏, 等.早侏罗世新特提斯洋俯冲作用[J].地质通报, 2018, 37(8):1387-1399. http://dzhtb.cgs.cn/gbc/ch/reader/view_abstract.aspx?file_no=20180803&flag=1
|
|
董国臣, 莫宣学, 赵志丹, 等.冈底斯带西段那木如岩体始新世岩浆作用及构造意义[J].岩石学报, 2011, (7):1983-1992. http://d.old.wanfangdata.com.cn/Periodical/ysxb98201107007
|
|
夏斌, 李建峰, 张玉泉, 等.藏南冈底斯带西段麦拉花岗岩锆石SHRIMP定年及地质意义[J].大地构造与成矿学, 2008, (2):243-246. doi: 10.3969/j.issn.1001-1552.2008.02.014
|
|
喻思斌.冈底斯中段始新世复式花岗岩体的成因及其对构造演化的启示[D].南京大学硕士学位论文, 2017. http://cdmd.cnki.com.cn/Article/CDMD-10284-1017097533.htm
|
|
丁小稀.西藏南冈底斯东部新生代侵入岩地球化学与年代学[D].中国地质大学(北京)硕士学位论文, 2016. http://cdmd.cnki.com.cn/Article/CDMD-11415-1016068154.htm
|
|
周斌, 韩奎, 乔新星, 等.西藏日多地区古近纪双峰式脉岩年代学、地球化学及其揭示的伸展背景[J].矿产勘查, 2018, (9):1746-1757. doi: 10.3969/j.issn.1674-7801.2018.09.014
|
|
杜等虎, 杨志明, 李秋耘, 等.西藏厅宫矿区始新世斑岩的厘定及其地质意义[J].矿床地质, 2012, (4):745-757. doi: 10.3969/j.issn.0258-7106.2012.04.007
|
|
邓晋福, 冯艳芳, 狄永军, 等.岩浆弧火成岩构造组合与洋陆转换[J].地质论评, 2015, (3):473-484. http://d.old.wanfangdata.com.cn/Periodical/dzlp201503001
|
|
叶丽娟.西藏拉萨地块南木林-羊八井岩浆岩的年代学和地球化学[D].中国地质大学(北京)硕士学位论文, 2013.
|
|
徐峰, 丁枫, 李跃, 等.西藏措勤县诺仓地区始新世花岗岩岩石学特征及找矿方向[J].矿床地质, 2014, (S1):1037-1038. http://d.old.wanfangdata.com.cn/Conference/8450782
|
|
王莉.青藏高原南部冈底斯岩基东南缘晚侏罗世-早始新世岩浆作用[D].中国地质科学院硕士学位论文, 2013. http://cdmd.cnki.com.cn/Article/CDMD-82501-1016056696.htm
|
|
朱弟成, 王青, 赵志丹, 等.大陆边缘弧岩浆成因与大陆地壳形成[J].地学前缘, 2018, 25(6):67-77. http://d.old.wanfangdata.com.cn/Periodical/dxqy201806007
|
|
孟元库, 许志琴, 陈希节, 等.冈底斯中段碱长花岗岩锆石UPb-Hf同位素特征及地质意义[J].中国地质, 2015, 42(5):1202-1213. doi: 10.3969/j.issn.1000-3657.2015.05.003
|
|
莫宣学, 赵志丹, 邓晋福, 等.印度-亚洲大陆主碰撞过程的火山作用响应[J].地学前缘, 2003, (3):135-148. doi: 10.3321/j.issn:1005-2321.2003.03.013
|
|
Mo X X, Niu Y L, Dong G C, et al. Contribution of syncollisional felsic magmatism to continental crust growth:A case study of the Paleogene Linzizong volcanic succession in southern Tibet[J]. Chemical Geology, 2008, 250(1/4):49-67. http://www.sciencedirect.com/science/article/pii/S0009254108000582
|
|
Wen D R, Liu D Y, Chung S L, et al. Zircon SHRIMP U-Pb ages of the Gangdese batholith and implications for Neotethyan subduction in southern Tibet[J]. Chemical Geology, 2008, 252(3/4):191-201. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=cd28a636c37d32c8fd2204619791d3d9
|
|
Ji W Q, Wu F Y, Chung S L, et al. Zircon U-Pb geochronology and Hf isotopic constraints on petrogenesis of the Gangdese batholith, southern Tibet[J]. Chemical Geology, 2009, 262(3/4):229-245. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=89901bb6b2d2c6c295afc354190fe548
|
|
Zhu D C, Wang Q, Zhao Z D, et al. Magmatic record of IndiaAsia collision[J]. Scientific Reports, 2015, 5:14289. doi: 10.1038/srep14289
|
|
董国臣, 莫宣学, 赵志丹, 等, 冈底斯岩浆带中段岩浆混合作用:来自花岗杂岩的证据[J].岩石学报, 2006, (4):835-844. http://d.old.wanfangdata.com.cn/Periodical/ysxb98200604007
|
|
李皓揚, 锺孙霖, 王彦斌, 等.藏南林周盆地林子宗火山岩的时代、成因及其地质意义:锆石U-Pb年龄和Hf同位素证据[J].岩石学报, 2007, (2):493-499. http://d.old.wanfangdata.com.cn/Periodical/ysxb98200702025
|
|
Zhu D C, Zhao Z D, Niu Y L, et al. The origin and preCenozoic evolution of the Tibet Plateau[J].Gondwana Research, 2013, (4):1429-1454. http://www.sciencedirect.com/science/article/pii/S1342937X1200041X
|
|
潘桂棠, 莫宣学, 侯增谦, 等.冈底斯造山带的时空结构及演化[J].岩石学报, 2006, 22(3):521-533. http://d.old.wanfangdata.com.cn/Periodical/ysxb98200603001
|
|
Han Y C, Ghang S H, Pirajno F, et al. Evolution of the Mesozoic Granites in the Xiong'ershan-Waifangshan Region, Western Henan Province, China, and Its Tectonic Implications[J]. Acta Geologica Sinica, 2007, 81(2):253-256. doi: 10.1111/j.1755-6724.2007.tb00949.x
|
|
Liu Y S, Hu Z C, Zong K Q, et al. Reappraisement and refinement of zircon U-Pb isotope and trace element analyses by LA-ICP-MS[J]. Chinese Science Bulletin, 2010, 55(15):1535-1546. doi: 10.1007/s11434-010-3052-4
|
|
Liu Y S, Hu Z C, Gao S, et al. In situ analysis of major and trace elements of anhydrous minerals by LA-ICP-MS without applying an internal standard[J]. Chemical Geology, 2008, 257:34-43. doi: 10.1016/j.chemgeo.2008.08.004
|
|
Ludwig K R. User's Manual for Isoplot 3.00, a geochronological Toolkit for Microsoft Excel[J]. Berkeley Geochronological Center Special Publication, 2003, 4:25-32.
|
|
Maitre R W L. A alassification of Igneous Rocks and Glossary of Terms[M]. Blackwell Scientific Publications, 1989.
|
|
Peccerillo A, Taylor S R. Geochemistry of Eocene Calc-Alkaline Volcanic Rocks from the Kastamonu Area, Northern Turkey[J]. Contributions to Mineralogy & Petrology, 1976, 58(1):63-81. doi: 10.1007/BF00384745
|
|
Middlemost E A K. Naming Materials in the Magma/Igneous Rock System[J]. Annual Review of Earth & Planetary Sciences, 1994, 37(3/4):215-224. http://www.sciencedirect.com/science/article/pii/0012825294900299
|
|
Molnar P, Tapponnier P. Cenozoic Tectonics of Asia:Effects of A Continental Collision:Features of Recent Continental Tectonics in Asia Can Be Interpreted as Results of the India-Eurasia Collision[J]. Science, 1975, 189(4201):419-426. doi: 10.1126/science.189.4201.419
|
|
Sun S S, Mc Donough W F. Chemical and isotope Systematics of Oceanic Basalts: implications for Mantle Composition and Processes[C]//Saunders A D, Norry M J. Geological Society London, Special Pulications, 1989, 12: 313-345.
|
|
Rudnick R L, Gao S. Composition of the continental crust[C]//Rudnick R L. The Crust: Treaties on Geochemistry. Oxford Elsevier Pergamon, 2003: 1-64.
|
|
Hoskin P W O, Schaltegger U. The composition of zircon and igneous and metamorphic petrogenesis[J]. Reviews in Mineralogy and Geochemistry, 2003, 53(1):27-62. doi: 10.2113/0530027
|
|
孟元库, 许志琴, 陈希节, 等.藏南冈底斯中段谢通门始新世复式岩体锆石U-Pb年代学、Hf同位素特征及其地质意义[J].大地构造与成矿学, 2015, 39(5):933-948. http://d.old.wanfangdata.com.cn/Periodical/ddgzyckx201505015
|
|
Mo X X, Dong G C, Zhao Z D, et al. Timing of magma mixing in the Gangdisê magmatic belt during the India-Asia collision:Zircon SHRIMP U-Pb dating[J]. Acta Geologica Sinica, 2005, 79(1):66-76. doi: 10.1111/j.1755-6724.2005.tb00868.x
|
|
董国臣, 莫宣学, 赵志丹, 等.西藏冈底斯南带辉长岩及其所反映的壳幔作用信息[J].岩石学报, 2008, 24(2):203-210. http://d.old.wanfangdata.com.cn/Periodical/ysxb98200802002
|
|
Dong G C, Mo X X, Zhao Z D, et al. Geochronologic constraints on the magmatic underplating of the Gangdisê belt in the IndiaEurasia collision:Evidence of SHRIMP Ⅱ zircon U-Pb dating[J]. Acta Geologica Sinica, 2005, 79(6):787-794. doi: 10.1111/j.1755-6724.2005.tb00933.x
|
|
丛源, 肖克炎, 翟庆国, 等.西藏南木林普洛岗岩体锆石定年和Hf同位素特征及其地质意义[J].吉林大学学报(地球科学版), 2012, 42(6):1783-1795. http://www.cqvip.com/QK/91256B/201206/44695107.html
|
|
李洪梁, 李光明, 刘洪, 等.拉萨地体西段达若地区古新世花岗斑岩成因:锆石U-Pb年代学、岩石地球化学和Sr-Nd-Pb-Hf同位素的约束[J].地球科学, 2019:1-27.doi: 10.3799/dqkx.2019.034.
|
|
邓晋福, 赵海玲, 莫宣学, 等.大陆根柱构造——大陆动力学的钥匙[M].北京:地质出版社, 1996.
|
|
Kelemen P B, Hangh K, Greenem A R.On view of the geochemistry of subduction-related magmatic arcs, with an emphasis on primitive andesite and lower crust[C]//Rudnick R L. Treatise on Geochemistry, 2003, 3: 593-659.
|
|
钟华明, 童劲松, 鲁如魁, 等.西藏日土县松西地区过铝质花岗岩的地球化学特征及构造背景[J].地质通报, 2006, 25(1/2):185. http://dzhtb.cgs.cn/gbc/ch/reader/view_abstract.aspx?file_no=20060129&flag=1
|
|
武鹏飞, 孙德有, 王天豪, 等.延边和龙地区闪长岩的年代学、地球化学特征及岩石成因研究[J].高校地质学报, 2013, 19(4):607. http://d.old.wanfangdata.com.cn/Periodical/gxdzxb201304006
|
|
Harris N B W, Lnger S. Trace element modeling of pelite-derived granites[J]. Contributions to Mineralogy and Petrology, 1992, 110:46-56. doi: 10.1007/BF00310881
|
|
Pearce J A, Harris N B W, Tindle A G. Trace-element discrimination diagrams for the tectonic interpretation of granitic rocks[J]. J. Petrol., 1984, 25(4):956-983 doi: 10.1093/petrology/25.4.956
|
|
Julian Pearce. Sources and settings of granitic rocks[J].Episodes, 1996. 19(4):120-125. doi: 10.18814/epiiugs/1996/v19i4/005
|
|
Liegeoiset J P. Some words on the post-collisional magmatism[J]. Lithos, 1998, 45:ⅩⅤ-ⅩⅤⅡ. doi: 10.1016-S0024-4937(98)00023-1/
|
|
Zorpi M J, Coulon C, Orsini J B. Hybridization between felsic and mafic magmas in calc-alkaline granitoids:A case study in northern Sardinia, Italy[J]. Chemical Geology, 1991, 92(1/3):45-86. http://www.sciencedirect.com/science/article/pii/000925419190049W
|
|
Sylvester L. Post-collisional strongly peraluminous granites[J]. Lithos, 1998, 45:29-44. doi: 10.1016/S0024-4937(98)00024-3
|
|
吴才来, 郜源红, 雷敏, 等.南阿尔金茫崖地区花岗岩类锆石SHRIMP U-Pb定年、Lu-Hf同位素特征及岩石成因[J].岩石学报, 2014, 30(8):2297-2323. http://d.old.wanfangdata.com.cn/Periodical/ysxb98201408014
|
|
Collins W J, Beams S D, White A J R, et al. Nature and Origin of A-type Granites with Particular Reference to Southeastern Australia[J]. Contributions To Mineralogy and Petrology, 1982, 80(2):189-200. doi: 10.1007/BF00374895
|
|
Batchelor R A, Bowden P. Petrogenetic interpretation of granitoid rock series using multicationic parameters[J]. Chem. Geol., 1985, (48):43-55. doi: 10.1016/0009-2541(85)90034-8
|
|
Bowden P. Oversaturated alkaline rocks: granites pantellerites and comendites[C]//The alkaline rocks. New York: Wiley, 1974: 622.
|
|
张旗, 冉眸, 李承东.A型花岗岩的实质是什么?[J].岩石矿物学杂志, 2012, 31(4):621-626. doi: 10.3969/j.issn.1000-6524.2012.04.014
|
|
侯增谦, 郑远川, 杨志明, 等.大陆碰撞成矿作用:Ⅰ.冈底斯新生代斑岩成矿系统[J].矿床地质, 2012, (4):647-670. doi: 10.3969/j.issn.0258-7106.2012.04.002
|
|
许志琴, 杨经绥, 李海兵, 等.印度-亚洲碰撞大地构造[J].地质学报, 2011, 85(1):1-33. http://d.old.wanfangdata.com.cn/Periodical/dizhixb201101001
|
|
Klootwijk C T, Gee J S, Peirce J W, et al. An early India-Asia contact:paleomagnetic constraints from Ninetyeast Ridge, ODP Leg 121[J]. Geology, 1992, 20:395-398. doi: 10.1130/0091-7613(1992)020<0395:AEIACP>2.3.CO;2
|
|
李国彪.西藏南部古近纪微体古生物及盆地演化特征[D].中国地质大学(北京)博士学位论文, 2004: 171. http://med.wanfangdata.com.cn/Paper/Detail?id=DegreePaper_Y721277
|
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| LI Yong, ZHOU Yong-zhang, DOU Lei, DU Hai-yan, HUANG Yu-hui, LAI Qi-hong, FAN Rui, DU Min, HE Xiang, WEI Zhi-chao. 2010: Prediction and early-warning for health safety of lead in soil and vegetable system，the Pearl River Delta Plain, southern China. Geological Bulletin of China, 29(11): 1662-1676. DOI: 10.12097/gbc.20101109 | |
| XIA Jun, WANG Lu-tai, ZHONG Hua-ming, TONG Jin-song, LU Ru-kui, WANG Ming. 2009: Discovery of large-scale Silurian ancient delta deposition system in Longmu Co area, Qinghai-Tibet Plateau, China and its significance. Geological Bulletin of China, 28(9): 1267-1275. DOI: 10.12097/gbc.20090915 | |
| HA Chengyou, ZHU Jinqi, YE Nianjun, HUANG Jingjun, GONG Jianshi, LU Hua. 2005: Formation and evolution of a forgotten Delta--the Huaihe River delta, eastern China. Geological Bulletin of China, 24(12): 1094-1106. DOI: 10.12097/gbc.2005012220 |
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