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ZHENG Jilin, LIU Tao, XU Liming, LIANG Zhongkai, GUO Xiaoyu, WANG Dake, SUN Jingyao. Geochemical and chronologic characteristics of ultramafic rocks in Gaxian ophiolitic mélange of the Da Hinggan Mountains and their geological significance[J]. Geological Bulletin of China, 2020, 39(4): 480-490.
Citation: ZHENG Jilin, LIU Tao, XU Liming, LIANG Zhongkai, GUO Xiaoyu, WANG Dake, SUN Jingyao. Geochemical and chronologic characteristics of ultramafic rocks in Gaxian ophiolitic mélange of the Da Hinggan Mountains and their geological significance[J]. Geological Bulletin of China, 2020, 39(4): 480-490.
shu

Geochemical and chronologic characteristics of ultramafic rocks in Gaxian ophiolitic mélange of the Da Hinggan Mountains and their geological significance

  • 1.

    The ex-No.3 Gold Detachment of Chinese Armed Police Force, Harbin 150086, Heilongjiang, China

  • 2.

    The ex-No.1 Gold Brigade of Chinese Armed Police Force, Harbin 150086, Heilongjiang, China

Received Date:  19 January 2019
Revised Date:  27 February 2019
Publish Date:  15 April 2020
    Abstract

  • The Gaxian ophiolitic melange belt is located in the middle of Xinlin-Gaxian-Jifeng ophiolitic melange belt.This ophiolite mainly consists of ultramafic and mafic rocks, mixed with metamorphic fine clastic rock matrix in the tectonic block form.This paper focuses on the systematic petrology, geochemistry and chronology of ultramafic rocks.The result shows that, in the ultramafic rock, the average value of SiO2 is 44.87%, the average value of Mg# is 87.06, and the zircon U-Pb age is 649.6±4.2 Ma, suggesting Neo-proterozoic.The curve of REE is of flat type, which shows MORB's transition to OIB.Geochemical data of the sample show depletion of Nb, Ta, Ti and enrichment of Th, U, Zr, Hf, exhibiting characteristics of the arc magma.In the Nb/Yb-Th/Yb tectonic environment discrimination diagram, it is located at the intersection of E-MORB and OIB.A comparison with the rock association of the regional tectonic and geochemical characteristics shows that the magma source area of the Gaxian ultramafic magma may be an enriched mantle replaced by subductive fluid, belonging to the SSZ type ophiolite, and its emplacement mechanism might have been related to the continuous intra-ocean subduction.

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    • References
  • [1] 刘永江, 张兴洲, 金巍, 等.东北地区晚古生代区域构造演化[J].中国地质, 2010, 37(4):943-951. doi: 10.3969/j.issn.1000-3657.2010.04.010

    CrossRef Google Scholar

    [2] 叶慧文, 张兴洲, 周裕文.牡丹江地区蓝片岩中脉状青铝闪石40Ar-39Ar年龄及其地质意义[J].长春地质学院学报, 1994, 24(4):369-372.

    Google Scholar

    [3] 李瑞山.新林蛇绿岩[J].黑龙江地质, 1991, 2(1):19-31.

    Google Scholar

    [4] 周建波, 曾维顺, 曹嘉麟, 等.中国东北地区的构造格局与演化:从500 Ma到180Ma[J].吉林大学学报(地球科学版), 2012, 45(5):1299-1329.

    Google Scholar

    [5] 葛文春, 吴福元, 周长勇, 等.大兴安岭北部塔河花岗岩体的时代及对额尔古纳地块构造归属的制约[J].科学通报, 2005, 50(12):1239-1247. doi: 10.3321/j.issn:0023-074X.2005.12.015

    CrossRef Google Scholar

    [6] 胡道功, 谭成轩, 张海.内蒙古阿里河地区中元古代蛇绿岩[J].中国区域地质, 1995, 4:334-343.

    Google Scholar

    [7] 佘宏全, 李进文, 向安平, 等.大兴安岭中北段原岩锆石U-Pb测年及其与区域构造演化关系[J].岩石学报, 2012, 28(2):571-594.

    Google Scholar

    [8] 冯志强.大兴安岭北段古生代构造-岩浆演化[D].吉林大学博士学位论文, 2015.

    Google Scholar

    [9] 王玉往, 陈伟民, 李德东, 等.内蒙古嘎仙钴镍硫化物矿床的地质特征及成因探讨[J].矿产勘查, 2016, 7(1):72-81. doi: 10.3969/j.issn.1674-7801.2016.01.009

    CrossRef Google Scholar

    [10] 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(s1/2):34-43.

    Google Scholar

    [11] Winchester J A, Floyd P A.Geochemical magma type discrimination:application to altered and metamorphosed basic igneous rocks[J].Earth & Planetary Science Letters, 1976, 28(3):459-469.

    Google Scholar

    [12] Boynton W V.Geochemistry of the rare earth elements: Meteorite studies[C]//Henderson P.Rare Earth Element Geochemistry.Elsevier, 1984: 63-114.

    Google Scholar

    [13] Sun S S, McDonough W F.Chemical and isotopic systematics of ocean basalts: Implications for mantle composition and processes[C]//Saunders A D, Norry M J.Magmatism in Oceanic Basins.Geological Society, London, Special Publications, 1989, 42: 313-345.

    Google Scholar

    [14] Volpe A M, Macdougall J D, Hawkins J W. Lau Basinbasalts (LBB):trace element and Sr-Nd isotopic evidence for heterogeneity in back arc basin mantle[J].Earth and Planetary Science Letters, 1988, 90(2):174-186.

    Google Scholar

    [15] 何琦, 肖龙, 魏启荣, 等.滇西吉义独蛇绿混杂岩的岩石地球化学特征、成因和构造环境探讨[J].岩石学报, 2009, 25(12):3229-40.

    Google Scholar

    [16] Mohr P A.Crustal contamination in mafic sheets: a summary[C]//Halls H, Fahrig W F.Mafic DykeSwarms.Geological Association of Canada Special Paper, 1987, 34: 75-80.

    Google Scholar

    [17] Robinson P T, Zhou M F, Hu X F, et al.Geochemical constraints on the origin of the Hegenshan ophiolite, Inner Mongolia, China[J].Journal of Asian Earth Sciences, 1999, 17:423-442. doi: 10.1016/S1367-9120(99)00016-4

    CrossRef Google Scholar

    [18] Barth M G, McDonough W F, Rudnick R L.Tracking the budget of Nb and Ta in the continental crust[J].Chemical Geology, 2000, 165(3):197-213.

    Google Scholar

    [19] 李昌年.火成岩微量元素岩石学[M].武汉:中国地质大学出版社, 1992:1-195.

    Google Scholar

    [20] Le Roex A P L, Dick H J B, Erlank A J, et al.Geochemistry, mineralogy and petrogenesis of lavas erupted along the southwest Indian Ridge between the Bouvet triple Junction and 11 degree east[J].J.Petrol., 1983, 24(3):267-318. doi: 10.1093/petrology/24.3.267

    CrossRef Google Scholar

    [21] Fitton J G, James D, Kempton P D, et al.The role of lithosphere mantle in the generation of Late Cenozoicbasic magmas in the western United States[J].J.Petrol., 1988, (Suppl.1):331-349.

    Google Scholar

    [22] Johnaon K T M.Experimental determination of partition coefficients for rare earth and high-field-strength elements betweenclinopyroxene, garnet, and basaltic melt at high pressures[J].Contributions to Mineralogy and Petrology, 1998, 133:60-68. doi: 10.1007/s004100050437

    CrossRef Google Scholar

    [23] Munker C.The isotope and trace element budgel of the Cambrian Devil River Are System, New Zealand:lentification of four source components[J].J.Petrol., 2000, 41:759-788. doi: 10.1093/petrology/41.6.759

    CrossRef Google Scholar

    [24] Kinzler R J.Melting of mantle peridotite at pressures approaching the spinel to garnet transition:Application to mid-ocean ridge basalt petrogenesis[J]. J.Geophys.Res., 1997, 102:853-874. doi: 10.1029/96JB00988

    CrossRef Google Scholar

    [25] Walter M J.Melting of garnet peridotite and the origin of komatiite and depleted lithosphere[J].J.Petrol., 1998, 39:29-60. doi: 10.1093/petroj/39.1.29

    CrossRef Google Scholar

    [26] Miyashiro A.The Troodos ophiolite complex was probably formed in and island arc setting[J].Earth and Planetary Science Letters, 1973, 19:218-224. doi: 10.1016/0012-821X(73)90118-0

    CrossRef Google Scholar

    [27] Pearce J A, Lippard S J, Roberts S.Charactesitcs and tectonic significance of supra subducion zone ophiolites[C]//Marginal basin geology.London: Blackwell Scientific Publications, 1984: 7-94.

    Google Scholar

    [28] 张旗, 周国庆.中国蛇绿岩[M].北京:科学出版社, 2001:1-180.

    Google Scholar

    [29] Wood D A.The application of a Th-Hf-Ta diagram toproblems of tectonmagmatic classification and to establis-hing the nature of crustal contanmination of basaltic lavas of the British Tertiary volcanic province[J].Earth and Planetary Science Letters, 1980, 50:11-30. doi: 10.1016/0012-821X(80)90116-8

    CrossRef Google Scholar

    [30] Cabanis B, Lecolle M.The La/10-Y/15-Nb/8 diagram; a tool for distinguishing volcanic series and discovering crustal mixing and/or contamination[M].Compte Rendus de I'Académie des Sciences Series Ⅱ, 1989: 2023-2029.

    Google Scholar

    [31] Pearce J A.Trace element characteristics of lavas from destructive plate boundaries[C]//Orogenic Andesites & Related Rocks.Chichester, Wiley, 1982: 528-548.

    Google Scholar

    ① 黑龙江省区域地质调查所.内蒙古1: 25万加格达奇、新林镇幅区域地质调查修测报告.2016.

    Google Scholar

    ② 北京矿产地质研究院.内蒙古自治区鄂伦春自治旗嘎仙地区镍钴铅锌矿普查报告.2009.

    Google Scholar

    ③ 中国地质科学院矿产资源研究所.大兴安岭关键构造-岩浆-成矿时间研究报告.2014.

    Google Scholar

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