The recognition of Baiyunshan ophiolitic mélanges belt in Beishan orogenic belt, Inner Mongolia and its indication for the subduction of the Beishan ocean
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摘要:
白云山蛇绿混杂岩带位于内蒙古北山造山带中部，呈北西西向展布，向东延伸至月牙山-洗肠井蛇绿混杂岩带，向西延伸至牛圈子-红柳园蛇绿混杂岩带。白云山蛇绿混杂岩带内发育俯冲期的糜棱面理褶皱、拼贴期逆冲断层系及隆升期走滑断层系3期构造变形，由不同类型的岩块与基质组成，岩块主要包括纯橄岩、辉橄岩、橄辉岩、辉石岩、碳酸盐化超基性岩、辉长岩、玄武岩、斜长花岗岩蛇绿岩岩块及硅质岩、灰岩和砂岩岩块，基质主要为蛇纹岩、绿泥片岩及砂板岩。在蛇绿混杂岩带中部发现保存较完整的洋壳残片，由南向北依次出露堆晶超镁铁质岩、堆晶辉长岩及变质玄武岩。结合大洋中脊玄武岩、洋岛玄武岩及晚寒武世岛弧钙碱性辉长岩的识别，认为白云山蛇绿混杂岩带寒武纪发育MOR型、OIB型、SSZ型等不同构造环境的蛇绿岩岩块，俯冲作用持续到晚志留世。
Abstract:The NWW-striking Baiyunshan ophiolitic mélanges belt is exposed in the central part of Beishan orogenic belt, which extends from Hongliuhe-Niujuanzi in the west to Xichangjing in the east.There are three stages of structural deformation in the Baiyunshan ophiolitic mélanges belt, i.e., mylonite fold in subduction period, thrust fault system in collage period and strike-slip fault system in uplift period.The Baiyunshan ophiolitic mélanges are composed of different types of blocks and matrix.The ophiolitic blocks include rocks of chassignites, pyroxene peridotites, olivine pyroxenolites, pyroxenites, carbonated ultramafic rocks, gabbros, basalts, plagiogranites, and the blocks include rocks of siliceous rocks, limestones and sandstones.The matrix is composed of serpentine matrix, green-schist matrix and sand-slate matrix.In the center of the ophiolitic mélanges belt, the fragments of intact oceanic crust from south to north were found, which are composed of cumulate ultramafic rocks, cumulate gabbros, basalts.Based on the identification of MORBs, OIBs and Late Cambrian island arc-calc alkaline gabbros, the authors believe that the ophiolite blocks of MOR type, OIB type and SSZ type were developed in the Cambrian in the Baiyunshan ophiolitic mélanges belt, and the subduction of the Hongliuhe-Xichangjiang Ocean lasted until late Silurian.
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Key words:
- Beishan orogenic belt /
- ophiolitic mélanges /
- types of the ophiolite /
- Inner Mongolia /
- Baiyunshan area
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表 1 白云山蛇绿混杂岩构造岩石单元划分
Table 1. The partition scheme of different types of block and matrix in the Baiyunshan ophiolite mélanges belt
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[1] Xiao W J, Mao Q G, Windley B F, et al.Paleozoic multiple accretionary and collisional processes of the Beishan orogenic collage[J].Am.J.Sci., 2010, 310:1553-1594. doi: 10.2475/10.2010.12
[2] 于福生, 李金宝, 王涛.东天山红柳河地区蛇绿岩U-Pb同位素年龄[J].地球学报, 2006, 27(3):213-216. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=dqxb200603004
[3] 张元元, 郭召杰.甘新交界红柳河蛇绿岩形成和侵位年龄的准确限定及大地构造意义[J].岩石学报, 2008, 24(4):803-809. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=ysxb98200804019
[4] Wu T R, Zheng R G, Zhang W, et al.Tectonic framework of Beishan Mountain-Northern Alxa Area and the time constraints for the closing of the Paleo-Asian Ocean[C]//Proceedings of the Fifth Workshop on 1: 5000000 International Geological Map of Asia.Beijing, 2011: 95-98.
[5] 武鹏, 王国强, 李向民, 等.甘肃北山地区牛圈子蛇绿岩的形成时代及地质意义[J].地质通报, 2012, 31(12):2032-2037. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=zgqydz201212012
[6] 侯青叶, 王忠, 刘金宝, 等.北山月牙山蛇绿岩地球化学特征及SHIMP定年[J].现代地质, 2012, 26(5):174-184. http://www.cnki.com.cn/Article/CJFDTotal-XDDZ201205023.htm
[7] 李向民, 余吉远, 王国强, 等.甘肃北山地区芨芨台子蛇绿岩LA-ICP-MS锆石U-Pb测年及其地质意义[J].地质通报, 2012, 31(12):2025-2031. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=zgqydz201212011
[8] 余吉远, 李向民, 王国强, 等.甘肃北山地区辉铜山和帐房山蛇绿岩LA-ICP-MS锆石U-Pb年龄及地质意义[J].地质通报, 2012, 31(12):2038-2045. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=zgqydz201212013
[9] Ao S J, Xiao W J, Han C M, et al.Cambrian to early Silurian ophiolite and accretionary processes in the Beishan collage, NW China:implications for the architecture of the Southern Altaids[J].Geological Magazine, 2012, 149, 606-625. doi: 10.1017/S0016756811000884
[10] Tian Z H, Xiao W J, Windley B F, et al.Structure, age, and tectonic development of the Huoshishan-Niujuanzi ophiolitic mélange, Beishan, southernmost Altaids[J].Gondwana Research, 2014, 25(2):820-841. doi: 10.1016/j.gr.2013.05.006
[11] 王国强, 李向民, 徐学义, 等.甘肃北山红石山蛇绿岩锆石U-Pb年代学研究及构造意义.岩石学报[J].2014, 30(6):1685-1694. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=ysxb98201406011
[12] 胡新茁, 赵国春, 胡新悦, 等.内蒙古北山地区月牙山蛇绿质构造混杂岩带地质特征、形成时代及大地构造意义[J].地质通报, 2015, 34(2/3):205-216. http://dzhtb.cgs.cn/gbc/ch/reader/view_abstract.aspx?file_no=2015020318&flag=1
[13] 孙立新, 张家辉, 任邦方, 等.北山造山带白云山蛇绿混杂岩的地球化学特征、时代及地质意义[J].岩石矿物学杂志, 2017, 36(2):131-147. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=yskwxzz201702001
[14] Shi Y R, Zhang W, Kröner A, et al.Cambrian ophiolite complexes in the Beishan area, China, southern margin of the Central Asian Orogenic Belt[J].Journal of Asian Earth Sciences, 2018, 153:193-205. doi: 10.1016/j.jseaes.2017.05.021
[15] Windley B F, Allen M B, Zhang C, et al.Paleozoic accretion and Cenozoic redeformation of the Chinese Tian Shan range, Central Asia[J].Geology, 1990, 18(2):128-131. http://adsabs.harvard.edu/abs/1990Geo....18..128W
[16] Windley B F, Alexeiev D, Xiao W J, et al.Tectonic models for accretion of the Central Asian Orogenic Belt[J].Journal of the Geological Society, 2007, 164(1):31-47. doi: 10.1144/0016-76492006-022
[17] Coleman R G.Continental growth of Northwest China[J].Tectonics, 1989, 8(3):621-635. http://onlinelibrary.wiley.com/doi/10.1029/TC008i003p00621/full
[18] Sengör A M C, Natalin B A, Burtman V S.Evolution of the Altaid tectonic collage and Palaeozoic crustal growth in the Eurasia[J].Nature, 1993, 364:299-304. doi: 10.1038/364299a0
[19] Jahn B M, Griffin W L, Windley B F.Continental growth in the Phanerozoic:Evidence from Central Asia[J].Tectonophysics, 2000, 328(1):157-182. http://www.onacademic.com/detail/journal_1000035475283410_858f.html
[20] Xiao W J, Windley B F, Badarch G, et al.Palaeozoic accretionary and convergent tectonics of the southern Altaids:Implications for the growth of Central Asia[J].Journal of the Geological Society, 2004, 161(3):339-342. doi: 10.1144/0016-764903-165
[21] 朱炜, 张正平, 孙璎姝, 等, 内蒙古北山北缘蓬勃山一带古亚洲洋闭合时间制约—来自黑红山二长花岗岩的证据[J].地质通报, 2019, 38(11):1846-1857. http://dzhtb.cgs.cn/gbc/ch/reader/view_abstract.aspx?file_no=20191108&flag=1
[22] 田健, 滕学建, 刘洋, 等, 内蒙古狼山地区早石炭世石英闪长岩U-Pb年龄、地球化学特征及其对古亚洲洋俯冲的指示[J].地质通报, 2020, 39(7):1035-1045. http://dzhtb.cgs.cn/gbc/ch/reader/view_abstract.aspx?file_no=20200710&flag=1
[23] 杨合群, 李英, 赵国斌, 等.北山蛇绿岩特征及构造属性[J].西北地质, 2010, 43(1):26-36. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=xbdz201001002
[24] 田健, 辛后田, 滕学建, 等.内蒙古北山造山带白云山地区上泥盆统墩墩山组火山岩的厘定及其构造意义[J].岩石学报, 2020, 36(2):509-525. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=ysxb98202002011
[25] 李向民, 余吉远, 王国强, 等.甘肃北山红柳园地区泥盆系三个井组和墩墩山群LA-ICP-MS锆石U-Pb测年及其意义[J].地质通报, 2011, 30(10):1501-1507. http://dzhtb.cgs.cn/gbc/ch/reader/view_abstract.aspx?file_no=20111003&flag=1
[26] Guo Q Q, Xiao W J, Hou Q L, et al.Construction of Late Devonian Dundunshan arc in the Beishan orogen and its implication for tectonics of southern Central Asian Orogenic Belt[J].Lithos, 2014, 184/187:361-378. doi: 10.1016/j.lithos.2013.11.007
[27] Guo Q Q, Chun S L, Xiao W J, et al.Petrogenesis and tectonic implications of Late Devonian arc volcanic rocks in southern Beishan orogen, NW China:Geochemical and Nd-Sr-Hf isotopic constraints[J].Lithos, 2017, 278-281:84-96. doi: 10.1016/j.lithos.2017.01.017
[28] Zhang W, Pease V, Wu T R, et al.Discovery of an adakite-like pluton near Dongqiyishan(Beishan, NW China)-its age and tectonic significance[J].Lithos, 2012, 142/143:148-160. doi: 10.1016/j.lithos.2012.02.021
[29] Song D F, Xiao W J, Han C M, et al.Geochronological and geochemical study of gneiss-schist complexes and associated granitoids, Beishan Orogen, southern Altaids[J].International Geology Review, 2013, 55(14):1705-1727. doi: 10.1080/00206814.2013.792515
[30] Song D F, Xiao W J, Han C M, et al.Progressive accretionary tectonics of the Beishan orogenic collage, southern Altaids:Insights from zircon U-Pb and Hf isotopic data of high-grade complexes[J].Precambrian Research, 2013, 227:368-388. doi: 10.1016/j.precamres.2012.06.011
[31] 史仁灯.蛇绿岩研究进展、存在问题及思考[J].地质论评, 2005, 51(6):681-693. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=dzlp200506010
[32] Li Y J, Wang G H, Santosh M, et al.Supra-subduction zone ophiolites from Inner Mongolia, North China:Implications for the tectonic history of the southeastern Central Asian Orogenic Belt[J].Gondwana Research, 2018, 59:126-143. doi: 10.1016/j.gr.2018.02.018
[33] Li Y J, Wang G H, Santosh M, et al.Subduction initiation of the SE Paleo-Asian Ocean:Evidence from a well preserved intra-oceanic forearc ophiolite fragment in central Inner Mongolia, North China[J].Earth and Planetary Science Letters, 2020, 535:116087. doi: 10.1016/j.epsl.2020.116087
[34] Hacker B R, Kelemen P B, Behn M D.Differentiation of the continental crust by relamination[J].Earth and Planetary Science Letters, 2011, 307(3/4):501-516. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=04c659eed5b3b6c46697f7a844266527
[35] Castro A, Vogt K, Gerya T.Generation of new continental crust by sublithospheric silicic-magma relamination in arcs:A test of Taylor's andesite model[J].Gondwana Research, 2013, 23(4):1554-1566. doi: 10.1016/j.gr.2012.07.004
[36] Le Maitre R W, Bateman P, Dudek A, et al.A classification of igneous rocks and glossary of terms[M].Oxford:Blackwell Scientific Publication, 1989.
[37] Miyashiro A, Shido F.Tholeiitic and calc-alkalic series in relation to the behaviors of titanium, vanadium, chromium, and nickel[J].American Journal of Science, 1975, 275(3):265-277. http://ci.nii.ac.jp/naid/80013105455
[38] Sun S S, McDonough W F.Chemical and isotopic systematics of oceanic basalts: Implications for mantle composition and processes[C]//Saunders A D, Norry M J.Magmatism in the Ocean Basins.Geological Society, London, Special Publications, 1989, 42(1): 313-345.
[39] Mullen E D.MnO/TiO2/P2O5:a minor element discriminant for basaltic rocks of oceanic environments and its implications for petrogenesis[J].Earth & Planetary Science Letters, 1983, DOI:10.1016/0012-821X(83)90070-5.
[40] Wood D A.The application of a Th-Hf-Ta diagram to problems of tectonomagmatic classification and to establishing the nature of crustal contamination of basaltic lavas of the british tertiary volcanic province[J].Earth Planet.Sci.Lett., 1980, 50(1):11-30. http://www.sciencedirect.com/science/article/pii/0012821X80901168
[41] Song D F, Xiao W J, Windley B F, et al.A Paleozoic Japan-type subduction-accretion system in the Beishan orogenic collage, southern Central Asian Orogenic Belt[J].Lithos, 2015, 224/225:195-213. doi: 10.1016/j.lithos.2015.03.005
[42] Yuan Y, Zong K Q, He Z Y, et al.Geochemical evidence for Paleozoic crustal growth and tectonic conversion in the Northern Beishan Orogenic Belt, southern Central Asian Orogenic Belt[J].Lithos, 2018, 302/303:189-202. doi: 10.1016/j.lithos.2017.12.026
[43] 舒良树, 邓兴梁, 马绪宣.中天山基底与塔里木克拉通的构造亲缘性[J].地球科学, 2019, 44(5):1585-1598. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=dqkx201905015
[44] Mao Q G, Xiao W J, Fang T H, et al.Late Ordovician to Early Devonian adakites and Nb-enriched basalts in the Liuyuan area, Beishan, NW China:Implications for Early Paleozoic slab-melting and crustal growth in the southern Altaids[J].Gondwana Research, 2012, 22(2):534-553. doi: 10.1016/j.gr.2011.06.006
[45] 牛亚卓, 宋博, 周俊林, 等.中亚造山带北山南部下泥盆统火山-沉积地层的岩相、时代及古地理意义[J].地质学报, 2020, 94(2):616-630. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=dizhixb202002017
① 田健, 辛后田, 段霄龙, 等.内蒙古1: 5万月牙山幅地质图.天津地质调查中心, 2018.
② 田健, 段霄龙, 程先钰, 等.内蒙古1: 5万月牙山、儿驼山幅区域地质调查报告.天津地质调查中心, 2019.
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