The discovery of Mesozoic overthrust nappe tectonics and an analysis of its control of mineralization in Shapoquan area, Ejin Banner, Inner Mongolia
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摘要:
北山地区发育中生代逆冲推覆构造及相关的成矿作用，但相应的研究工作一直薄弱，限制了找矿勘探进展。内蒙古额济纳旗沙坡泉地区的大比例尺地质填图及钻探工作发现，该区存在一条北西向逆冲推覆构造带。地层层序关系表明，逆冲推覆作用发生在早侏罗世-早白垩世之间，逆冲推覆构造及其派生构造控制了多金属矿体的形成和分布，其中北东向网状断裂裂隙系统是最主要的导矿、容矿构造。该推覆构造的发现指示了沙坡泉地区还有较大的找矿潜力，同时也启示在研究中应注意北山中南带中生代的逆冲推覆构造及相关的成矿作用。
Abstract:The Mesozoic overthrust nappe structures were found by more and more geologists, and the correlated mineralization in Beishan area has become a key problem; nevertheless, the related study and knowledge are very insufficient. This situation has hindered the progress in mineral survey and exploration. Lower Cretaceous strata, overthrust faults, klippen and tectonic windows can be recognized. The sequences of stratigraphic units suggest that the overthrust nappe structures were formed between the Early Jurassic and the Early Cretaceous, the overthrust nappe tectonics and the lower order structures derived from this overthrust nappe tectonics controlled the formation and distribution of orebodies, in which the NE-trending network faults-fractures system was the main ore fluid channels and hosted orebodies. Based on a study of the overthrust nappe tectonics, the authors hold that there is a great potential for prospecting in the Shapoquan ore district, and that more attention should be paid to the overthrust nappe tectonics and correlated mineralization in middle and south metallogenic belt in Beishan area.
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Key words:
- overthrust nappe tectonics /
- klippe /
- Mesozoic /
- structural ore-control /
- Shapoquan
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[1] 王明, 李才, 董永胜, 等.西藏谢通门斯弄多地区新生代逆冲推覆构造的基本特征[J].地质通报, 2010, 29(12): 1851-1856. doi: 10.3969/j.issn.1671-2552.2010.12.013 http://dzhtb.cgs.cn/ch/reader/view_abstract.aspx?file_no=20101213&flag=1
[2] 邱骏挺, 余心起, 吴淦国, 等.北武夷篁碧矿区逆冲推覆构造及其与钼、铅-锌成矿作用关系[J].地学前缘, 2011, 18(5):243-255. http://www.cnki.com.cn/Article/CJFDTOTAL-TYGC201306016.htm
[3] 杨兴科, 程宏宾, 姬金生, 等.东天山碰撞造山与金铜成矿系统分析[J].大地构造与成矿学, 1999, 23(4): 315-322. http://d.wanfangdata.com.cn/Periodical_xagcxyxb200002002.aspx
[4] 左国朝, 冯永忠, 刘春燕, 等.甘蒙北山中南带新发现燕山早期走滑挤压推覆构造带[J].地质科学, 1992, (4): 309-316. http://cpfd.cnki.com.cn/Article/CPFDTOTAL-ZGDW200710001066.htm
[5] 苗来成, 朱明帅, 张福勤.北山地区中生代岩浆活动与成矿构造背景分析[J].中国地质, 2014, 41(4): 1190-1204. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=zgdizhi201404013
[6] 杨合群, 赵国斌, 李英, 等.新疆-甘肃-内蒙古衔接区古生代构造背景与成矿的关系[J].地质通报, 2012, 31(2/3): 413-421. http://dzhtb.cgs.cn/ch/reader/view_abstract.aspx?file_no=2012020326&flag=1
[7] 冯罡, 张善明, 苏胜民, 等.内蒙古额济纳旗沙坡泉金多金属矿地质特征与构造控矿作用[J].内蒙古科技与经济, 2015, 24: 42-45. http://www.cqvip.com/QK/91119X/201524/667727868.html
[8] 杜玉良, 殷先明, 冯治汉, 等.北山地区中生代构造-岩浆活动与成矿[J].西北地质, 2009, 42(2): 48-54. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=zgdizhi201404013
[9] 杨建国, 杨合群, 杨林海, 等.北山地区北东向构造对金钨锡钼(稀土)矿床控制作用初探[J].大地构造与成矿学, 2004, 28(4): 404-412. http://cpfd.cnki.com.cn/Article/CPFDTOTAL-BJCX201003001024.htm
[10] 汪昌亮, 颜丹平, 张冰, 等.雪峰山西部中生代厚皮逆冲推覆构造样式与变形特征研究[J].现代地质, 2011, 25(6): 1021-1031. https://www.wenkuxiazai.com/doc/1609671d5f0e7cd184253627.html
[11] 朱志澄.逆冲推覆构造[M].武汉:中国地质大学出版社, 1989: 140-150.
[12] 郭庆银, 陈祖伊, 刘红旭, 等.北山-走廊地区中-新生代构造演化及盆地产铀远景评价[J].铀矿地质, 2006, 22(6): 321-335. http://industry.wanfangdata.com.cn/dl/Detail/Periodical?id=Periodical_ykdz200606001
[13] 何治亮, 高山林, 郑孟林.中国西北地区沉积盆地发育的区域构造格局与演化[J].地学前缘, 2015, 22(3):227-240. http://www.cqvip.com/QK/98600X/201503/664726853.html
[14] 戴霜, 张明震, 彭栋祥, 等.中国西北地区中-新生代构造与气候格局演化[J].海洋地质与第四纪地质, 2013, 33(4): 153-168. http://www.doc88.com/p-1582343400424.html
[15] 刘训.中国西北盆山地区中-新生代古地理及地壳构造演化[J].古地理学报, 2004, 6(4):448-458. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=gdlxb200404007
[16] Bonini M. Deformation patterns and structural vergence in brittleeductile thrust wedges:An additional analogue modelling perspective[J]. Journal of Structural Geology, 2007, 29:141-158. doi: 10.1016/j.jsg.2006.06.012
[17] Mao J W, Wang Y T, Lehmann B, et al. Molybdenite Re-Os and albite 40Ar/39Ar dating of Cu-Au-Mo and magnetite porphyry systems in the Yangtze River valley and metallogenic implications[J]. Ore Geology Reviews, 2006, 29: 307-324. doi: 10.1016/j.oregeorev.2005.11.001
[18] Zweigel P, Ratschbacher L, Frisch W. Kinematics of an arcuate foldthrust belt:The southern Eastern Carpathians(Romania)[J]. Tectonophysics, 1998, 297:177-207. doi: 10.1016/S0040-1951(98)00168-1
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