甘肃金川矿区构造应力场与构造演化研究
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摘要
文章统计分析了金川矿区内地层和侵入体中的节理构造,对矿区内的共轭剪节理进行配套、分期,综合区域构造演化史后分析了矿区构造应力场。研究表明,金川矿区从新太古代到古生代至少受到4期古构造应力的作用。第一期构造应力场为NS向的挤压,由阴山陆块与鄂尔多斯陆块碰撞形成华北古陆西部陆块引起。第二期构造应力场为NE-SW向的挤压,与华北克拉通东、西陆块碰撞拼合并参与Columbia超大陆拼合事件有关;其后阿拉善陆块与华南陆块参与Rodinia超大陆拼合事件,应力场持续作用。第三期构造应力场为近NS向的挤压,由祁连洋不断向北俯冲引起。第四期构造应力场为NNE-SSW向的挤压,与祁连造山带发生的强烈造山运动有关。
This paper makes statistics and analysis of joints in strata and intrusions in Jinchuan mining district.The conjugate shear joints are fit in sets and staged then the structural stress field is analyzed combined with the regional tectonic evolution history.From Neo-Archean to palaeozoic era here is at leas`t exposed to four phases of palaeo-tectonic stress.The first one is NS compression caused by the Yinshan block and Ordos block collision with formation of western block of the palaeo-north China continent.The second one is NE-SW compression caused by the collage of the eastern and western blocks of the north China craton and the involvement in collage of the Columbia supercontinent.Then Alashan block and the southern China block participated in Rodinia supercontinent collage and the stress field continues to play role.The third phase of tectonic stress field is near NS compression caused by continuously northward subduction of the Qilian ocean.The last is NNE-SSW compression related to the strong orogenesis in the Qilian orogenic belt.
This paper makes statistics and analysis of joints in strata and intrusions in Jinchuan mining district.The conjugate shear joints are fit in sets and staged then the structural stress field is analyzed combined with the regional tectonic evolution history.From Neo-Archean to palaeozoic era here is at leas`t exposed to four phases of palaeo-tectonic stress.The first one is NS compression caused by the Yinshan block and Ordos block collision with formation of western block of the palaeo-north China continent.The second one is NE-SW compression caused by the collage of the eastern and western blocks of the north China craton and the involvement in collage of the Columbia supercontinent.Then Alashan block and the southern China block participated in Rodinia supercontinent collage and the stress field continues to play role.The third phase of tectonic stress field is near NS compression caused by continuously northward subduction of the Qilian ocean.The last is NNE-SSW compression related to the strong orogenesis in the Qilian orogenic belt.
引文
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[22]闫海卿,刘巧峰,汤中立,等.龙首山地块的构造属性---来自U-Pb锆石年龄的约束[J].中国工程科学,2015,17(2):59-72.
[23]李三忠,赵国春,孙敏.华北克拉通早元古代拼合与Columbia超大陆形成研究进展[J].科学通报,2016,61(9):919-925.
[24]Hoffman P F.United Plates of America,The Birth of a Craton:Early Proterozoic Assembly and Growth of Laurentia[J].Annual Review of Earth&Planetary Sciences,1988,16(1):543-603.
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[26]Tung K A,Yang H Y,Liu D Y,et al.SHRIMP U-Pb geochronology of the detrital zircons from the Longshoushan Group and its tectonic significance[J].科学通报(英文版),2007,52(10):1414-1425.
[27]汤中立.华北古陆西南缘(龙首山-祁连山)成矿系统及成矿构造动力学[M].北京:地质出版社,2002.
[28]Condie K C,Aster R C.Episodic zircon age spectra of orogenic granitoids:The supercontinent connection and continental growth[J].Precambrian Research,2010,180(3):227-236.
[29]Zhao G C,Cawood P A.Precambrian geology of China[J].Precambrian Research,2012,222:13-54.
[30]Yan W,Wang L K,Yang L Y,et al.The Alashan Terrane was not part of North China by the Late Devonian:Evidence from detrital zircon U-Pb geochronology and Hf isotopes[J].Gondwana Research,2015,27(3):1270-1282.
[31]Zhang J,Zhang Y,Xiao W,et al.Linking the Alxa Terrane to the eastern Gondwana during the Early Paleozoic:Constraints from detrital zircon U-Pb ages and Cambrian sedimentary records[J].Gondwana Research,2015,28(3):1168-1182.
[32]汤中立,白云来.华北板块西南边缘大型、超大型矿庆地质构造背景[J].甘肃地质,2000(1):1-15.
[33]魏俏巧,郝立波,陆继龙,等.甘肃河西堡花岗岩LA-MC-ICP-MS锆石U-Pb年龄及其地质意义[J].矿物岩石地球化学通报,2013,32(6):729-735.
[34]吴才来,徐学义,高前明,等.北祁连早古生代花岗质岩浆作用及构造演化[J].岩石学报,2010,26(4):1027-1044.
[35]Song S G,Niu Y L,Su L,et al.Tectonics of the North Qilian orogen,NW China[J].Gondwana Research,2013,23(4):1378-1401.
[2]黄满湘.金川矿床构造体系研究[R].长沙:中南大学,2013.
[3]李佐.甘肃金川铜镍硫化物矿床控矿构造研究[D].长沙:中南大学,2009.
[4]马佳虹.金川矿区韧性剪切带特征及其意义[D].西安:长安大学,2012.
[5]廖文建.金川铜镍矿区构造岩相填图、应力场分析和深部成矿预测[D].北京:中国地质大学,2016.
[6]曾认宇,赖健清,毛先成,等.金川铜镍矿床中断裂系统的形成演化及对矿体的控制[J].中国有色金属学报,2013,23(9):2574-2583.
[7]高亚林.金川矿区地质特征、时空演化及深边部找矿研究[D].兰州:兰州大学,2009.
[8]汤中立,李文渊.金川铜镍硫化物(含铂)矿床成矿模式及地质对比[M].北京:地质出版社,1995.
[9]Wan Y S,Liu D Y,Dong C Y,et al.The Precambrian Khondalite Belt in the Daqingshan area,North China Craton:evidence for multiple metamorphic events in the Palaeoproterozoic era[J].Geological Society,London,Special Publications,2009,323(1):73-97.
[10]曾认宇,赖健清,毛先成,等.金川铜镍硫化物矿床两个主要矿体的母岩浆在岩浆演化过程中的关系[J].中国有色金属学报,2015,25(3):761-775.
[11]Zeng R Y,Lai J Q,Mao X C,et al.Geochemistry,zircon U-Pb dating and Hf isotopies composition of Paleozoic granitoids in Jinchuan,NW China:Constraints on their petrogenesis,source characteristics and tectonic implication[J].Journal of Asian Earth Sciences,2016,121:20-33.
[12]Zhang M J,Kamo S L,Li C S,et al.Precise U-Pb zirconbaddeleyite age of the Jinchuan sulfide ore-bearing ultramafic intrusion,western China[J].Mineralium Deposita,2010,45(1):3-9.
[13]曾认宇,赖健清.甘肃龙首山地区构造-岩浆事件及其地球动力学意义[D].长沙:中南大学,2017.
[14]焦建刚,刘欢,段俊,等.金川铜镍硫化物矿床Hf同位素地球化学特征与岩浆源区[J].地球科学与环境学报,2014,36(1):58-67.
[15]李献华,苏犁,宋彪,等.金川超镁铁侵入岩SHRIMP锆石U-Pb年龄及地质意义[J].科学通报,2004,49(4):401-402.
[16]田毓龙,武栓军,孟蓉,等.金川超镁铁质岩体LA-ICPMS锆石U-Pb年龄[J].矿物学报,2007,27(2):211-217.
[17]Keays R R,Ihlenfeld C,Mcinnes B I,et al.Re-Os isotope dating of the Jinchuan Ni-Cu-PGE sulfide deposit,China[J].Recent advances in magmatic ore systems of mafic-ultramafic rocks,proceedings of the IGCP,2004,479:41-42.
[18]Yang S H,Qu W J,Tian Y L,et al.Origin of the inconsistent apparent Re-Os ages of the Jinchuan Ni-Cu sulfide ore deposit,China:Post-segregation diffusion of Os[J].Chemical Geology,2008,247(3):401-418.
[19]王锡勇,张庆龙,王良书,等.鄂尔多斯盆地东缘中-新生代构造特征及构造应力场分析[J].地质通报,2010,29(8):1168-1176.
[20]万天丰.古构造应力场[M].北京:地质出版社,1988:22-35.
[21]宫江华.西阿拉善地块早前寒武纪变质基底组成、性质、年代格架及归属[D].北京:中国地质科学院,2013.
[22]闫海卿,刘巧峰,汤中立,等.龙首山地块的构造属性---来自U-Pb锆石年龄的约束[J].中国工程科学,2015,17(2):59-72.
[23]李三忠,赵国春,孙敏.华北克拉通早元古代拼合与Columbia超大陆形成研究进展[J].科学通报,2016,61(9):919-925.
[24]Hoffman P F.United Plates of America,The Birth of a Craton:Early Proterozoic Assembly and Growth of Laurentia[J].Annual Review of Earth&Planetary Sciences,1988,16(1):543-603.
[25]陆松年,杨春亮,李怀坤,等.华北古大陆与哥伦比亚超大陆[J].地学前缘,2002,9(4):225-233.
[26]Tung K A,Yang H Y,Liu D Y,et al.SHRIMP U-Pb geochronology of the detrital zircons from the Longshoushan Group and its tectonic significance[J].科学通报(英文版),2007,52(10):1414-1425.
[27]汤中立.华北古陆西南缘(龙首山-祁连山)成矿系统及成矿构造动力学[M].北京:地质出版社,2002.
[28]Condie K C,Aster R C.Episodic zircon age spectra of orogenic granitoids:The supercontinent connection and continental growth[J].Precambrian Research,2010,180(3):227-236.
[29]Zhao G C,Cawood P A.Precambrian geology of China[J].Precambrian Research,2012,222:13-54.
[30]Yan W,Wang L K,Yang L Y,et al.The Alashan Terrane was not part of North China by the Late Devonian:Evidence from detrital zircon U-Pb geochronology and Hf isotopes[J].Gondwana Research,2015,27(3):1270-1282.
[31]Zhang J,Zhang Y,Xiao W,et al.Linking the Alxa Terrane to the eastern Gondwana during the Early Paleozoic:Constraints from detrital zircon U-Pb ages and Cambrian sedimentary records[J].Gondwana Research,2015,28(3):1168-1182.
[32]汤中立,白云来.华北板块西南边缘大型、超大型矿庆地质构造背景[J].甘肃地质,2000(1):1-15.
[33]魏俏巧,郝立波,陆继龙,等.甘肃河西堡花岗岩LA-MC-ICP-MS锆石U-Pb年龄及其地质意义[J].矿物岩石地球化学通报,2013,32(6):729-735.
[34]吴才来,徐学义,高前明,等.北祁连早古生代花岗质岩浆作用及构造演化[J].岩石学报,2010,26(4):1027-1044.
[35]Song S G,Niu Y L,Su L,et al.Tectonics of the North Qilian orogen,NW China[J].Gondwana Research,2013,23(4):1378-1401.