新疆西天山伊犁地区石炭纪火山—沉积序列及盆地性质
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摘要
新疆西天山伊犁地区作为中天山微板块的一部分,呈"倒三角形"被缝合带或断裂带所围限。其上广泛出露的石炭纪火山—沉积岩系,是研究西天山石炭纪盆地性质和天山古生代造山作用演化过程最为直接的载体。本文通过对石炭纪火山—沉积剖面的岩石组合、地层序列、构造环境及盆地演化过程研究表明:伊犁地区石炭纪火山—沉积岩与下伏地层(前寒武纪结晶基底或前石炭纪褶皱基底)之间呈广泛的区域性角度不整合接触;火山—沉积岩系由下到上可以划分为2个序列,分别对应于盆地伸展—裂陷演化的两个旋回:序列Ⅰ:大哈拉军山组底部扇三角洲相、向上出现2次爆发相—喷溢相的火山喷发旋回,阿克沙克组底部扇三角洲相,向上过渡为滨浅海相—开阔台地相;序列Ⅱ:伊什基里克组由下到上由3次爆发相—喷溢相的火山喷发旋回构成,东图津河组为浅海陆棚相。西天山伊犁地区石炭纪火山—沉积序列反映了后碰撞伸展环境下的裂谷盆地充填演化过程。
The Ili area,as a part of the Central Tianshan micro-continent,is a inverse-triangular area bordered by sutures and zones in the Tianshan belt.Carboniferous volcanic—sedimentary rocks widely outcropping in Ili area is the most direct carrier in the study of Carboniferous basin properties of western Tianshan and Paleozoic orogenic evolution of Tianshan.According to the rock assemblage,stratigraphic sequence,tectonic setting and basin evolution of the Carboniferous volcanic—sedimentary section,we can draw the following conclusions:there is a wide regional angular unconformity between the Lower Carboniferous and its underlying strata(the Precambrian crystalline basemen or pre-Carboniferous folded basement).From bottom to top,Carboniferous volcanic—sedimentary rocks can be divided into two sequences respectively corresponding to two cycles of extensional—rift evolution in the basin.Sequence I consists of Dahalajunshan Formation with fan delta facies in the bottom,upward transition as two cycles from volcano explosive facies to effusive facies and Akeshake Formation with fan delta facies in the bottom,upward transition as from shore—-shallow sea facies to open platform facies.Sequence Ⅱ consists of Yishijilike Formation with three cycles by volcano explosive facies to effusive facies and Dongtujinhe Formation with neritic shelf facies.It is believed that the fill sequences in Carboniferous volcanic—sedimentary basin reflected the process of rift basin filling and evolution in post-collision extensional setting.
The Ili area,as a part of the Central Tianshan micro-continent,is a inverse-triangular area bordered by sutures and zones in the Tianshan belt.Carboniferous volcanic—sedimentary rocks widely outcropping in Ili area is the most direct carrier in the study of Carboniferous basin properties of western Tianshan and Paleozoic orogenic evolution of Tianshan.According to the rock assemblage,stratigraphic sequence,tectonic setting and basin evolution of the Carboniferous volcanic—sedimentary section,we can draw the following conclusions:there is a wide regional angular unconformity between the Lower Carboniferous and its underlying strata(the Precambrian crystalline basemen or pre-Carboniferous folded basement).From bottom to top,Carboniferous volcanic—sedimentary rocks can be divided into two sequences respectively corresponding to two cycles of extensional—rift evolution in the basin.Sequence I consists of Dahalajunshan Formation with fan delta facies in the bottom,upward transition as two cycles from volcano explosive facies to effusive facies and Akeshake Formation with fan delta facies in the bottom,upward transition as from shore—-shallow sea facies to open platform facies.Sequence Ⅱ consists of Yishijilike Formation with three cycles by volcano explosive facies to effusive facies and Dongtujinhe Formation with neritic shelf facies.It is believed that the fill sequences in Carboniferous volcanic—sedimentary basin reflected the process of rift basin filling and evolution in post-collision extensional setting.
引文
白建科,李智佩,徐学义,茹艳娇,李婷.2011.西天山伊犁地块北缘早石炭世硅化木的发现及其意义.地质通报,30(10):1557~1562.
车自成,刘良,刘洪福,罗金海.1996.论伊犁古裂谷.岩石学报,12(3):478~490.
程春华,张芳荣,余泉,楼法生.2010.西天山乌孙山地区大哈拉军山组火山岩形成的构造背景.华东理工大学学报(自然科学版),33(1):22~28.
高俊,钱青,龙灵利,张喜,李继磊,苏文.2009.西天山的增生造山过程.地质通报,28(12):1804~1816.
顾连兴,胡受奚.于春水,吴昌志,严正富.2001.论博格达俯冲撕裂型裂谷的形成与演化.岩石学报,17(4):585~597.
李大鹏,杜杨松,庞振山,涂其军,张永平,葛松生,沈立军,王开虎.2013.西天山阿乌拉勒石炭纪火山岩年代学和地球化学研究.地球学报,34(2):176~192.
李凤鸣,彭湘萍,石福品,周昌平,陈建中.2011.西天山石炭纪火山—沉积盆地铁锰矿成矿规律浅析.新疆地质,29(1):55~60.
李锦轶,何国琦,徐新,李华芹,孙桂华,杨天南,高立明,朱志新.2006.新疆北部及邻区地壳构造格架及其形成过程的初步探讨.地质学报,80(1):148~168.
李永军,李注苍,佟丽莉,高占华,佟黎明.2010a.论天山古洋盆关闭的地质时限——来自伊宁地块石炭系的新证据.岩石学报,25(6):2905~2912.
李永军,金朝,胡克亮,葛海影,李鸿,林列全.2010b.西天山尼勒克北于赞—带下石炭统阿克沙克组扇三角洲相沉积的发现及意义.地质学报,84(10):1470~1478.
林畅松.2009.沉积盆地的层序和沉积充填结构及过程响应.沉积学报,27(5):849~862.
刘静,李永军,王小刚,郭文杰.2006.西天山阿乌拉勒一带伊什基里克组火山岩地球化学特征及构造环境.新疆地质,24(2):105~108.
刘伟,徐永波,衡星,赵同阳.2009.赛里木地块北缘古元古界变质杂岩地质特征及构造意义.新疆地质,27(3):201~206.
龙灵利,高俊,钱青,熊贤明,王京彬,王玉往,高立明.2008.西天山伊犁地区石炭纪火山岩地球化学特征及构造环境.岩石学报,24(4):699~710.
钱青,高俊,熊贤明,龙灵利,黄德志.2006.西天山昭苏北部石炭纪火山岩的岩石地球化学特征、成因及形成环境.岩石学报,22(5):1307~1323.
沙德铭,董连慧,毋瑞身,田昌烈,贾斌.2003.西天山浅成低温金矿容矿火山岩地球化学及成矿环境初探.地质与资源,12(4):206~214.
邵济安,孟庆任,魏海泉,张履桥,王佩瑛.2003.冀西北晚侏罗世火山—沉积盆地的性质及构造环境.地质通报,22(10):751~761.
舒良树,卢华复,印栋浩,马瑞士,夏飞,卢汉.2001.新疆北部古生代大陆增生构造.新疆地质,19(1):59~63.
王博,舒良树,Cluzel D,Faure M,Charvet J.2007.伊犁北部博罗霍努岩体年代学和地球化学研究及其大地构造意义.岩石学报,23(8):1885~1900.
夏林圻,李向民,夏祖春,徐学义,马中平,王立社.2006.天山石炭一二叠纪大火成岩省裂谷火山作用与地幔柱.西北地质,39(1):1~49
杨菲,汪正江,王剑,杜秋定,邓奇,伍皓,周小琳.2012.华南西部新元古代中期沉积盆地性质及其动力学分析——来自桂北丹洲群的沉积学制约.地质论评,58(5):854~864.
杨鑫,王亚东,刘兴旺,郑建京.2012.后碰撞伸展环境下的盆地特征与成盆机制.地质论评,58(3):444~450.
张天继,李永军,王晓刚,栾新东,王谣培,刘静,李鸿,杨高学.2006.西天山伊什基里克山一带东图津河组的确定.新疆地质,24(1):13~15.
张作衡,洪为,蒋宗胜,段士刚,王志华,李凤鸣,石福品,赵军,郑仁乔.2012.新疆西天山晚古生代铁矿床的地质特征、矿化类型及形成环境.矿床地质,31(5):941~964.
朱永峰,张立飞,古丽冰,郭璇,周晶.2005.西天山石炭纪火山岩SHRIMP年代学及微量元素地球化学研究.科学通报,50(18):2004~2014.
朱志新,董连慧,刘淑聪,李锦轶,王克卓,赵同阳,李平,靳留圆.2012.新疆西天山伊犁地块晚古生代火山岩地质特征及构造意义.新疆地质,30(3):258-263.
Coleman R G.1989.Continental growth of northwest China.Tectonics,8(3):621-635.
Dickinson W R,Suczek C.1979.Plate tectonics and sandstone compositions.America Association of Petroleum Geologists Bulletin,63:2164-2182.
Dickinson W R.1985.Interpreting provenance relations from detrital modes of sandstones//Zuff G G.Provenance of Arenites.Dordrecht,The Netherlands,Reidel D,333-361.
Foley S F,Venturelli G,Green D H,Toscani L.1987.The ultrapotassic rocks:characteristics,classification and constraints for pertrogenetic models.Earth-science reviews,24(2):81-134.
Gao Jun,Li Maosong,Xiao Xuchang,Tang Yaoqing,He Guoqi.1998.Paleozoic tectonic evolution of the Tianshan orogen,northwestern China.Tectonophysics,287:216-231.
Jahn B M,Griffin W L,Windley B F.2000.Continental growth in the Phanerozoic;Evidence from Central Asia.Tectonophysics,328:1-227.
Xiao Wenjiao,Han Chunming,Yuan Chao,Sun Min,Lin Shoufa,Chen Hanlin,Li Zilong,Li Jiliang,Sun Shu.2008.Middle Cambrian to Permian subduction-related accretionary orogenesis fo Northern Xinjiang,NW China:implications for the tectonic evolution of central Asia.Journal of Asian Earth Sciences,32:102-117.
Xu Xueyi,Wang Hongliang,Li Ping,Chen Junlun,Ma Zhongping,Zhu Tao,Wang Ning,Dong Yunpeng.2013.Geochemistry and geochronology of Paleozoic intrusions in the Nalati(Narati)area in western Tianshan,Xinjiang,China:implications for Paleozoic tectonic evolution.Journal of Asian Earth Sciences,72:33-62.
Zhang Lifei,Ai Yongliang,Li Xuping,Rubatto D,Song Biao,Williams S,Song Shuguang,Ellis D and Liou J G.2007.Triassic collision of western Tianshan orogenic belt,China:evidence from SHRIMP UPb dating of zircon from HP/UHP eclogitic rocks.Lithos,96:266-280.
车自成,刘良,刘洪福,罗金海.1996.论伊犁古裂谷.岩石学报,12(3):478~490.
程春华,张芳荣,余泉,楼法生.2010.西天山乌孙山地区大哈拉军山组火山岩形成的构造背景.华东理工大学学报(自然科学版),33(1):22~28.
高俊,钱青,龙灵利,张喜,李继磊,苏文.2009.西天山的增生造山过程.地质通报,28(12):1804~1816.
顾连兴,胡受奚.于春水,吴昌志,严正富.2001.论博格达俯冲撕裂型裂谷的形成与演化.岩石学报,17(4):585~597.
李大鹏,杜杨松,庞振山,涂其军,张永平,葛松生,沈立军,王开虎.2013.西天山阿乌拉勒石炭纪火山岩年代学和地球化学研究.地球学报,34(2):176~192.
李凤鸣,彭湘萍,石福品,周昌平,陈建中.2011.西天山石炭纪火山—沉积盆地铁锰矿成矿规律浅析.新疆地质,29(1):55~60.
李锦轶,何国琦,徐新,李华芹,孙桂华,杨天南,高立明,朱志新.2006.新疆北部及邻区地壳构造格架及其形成过程的初步探讨.地质学报,80(1):148~168.
李永军,李注苍,佟丽莉,高占华,佟黎明.2010a.论天山古洋盆关闭的地质时限——来自伊宁地块石炭系的新证据.岩石学报,25(6):2905~2912.
李永军,金朝,胡克亮,葛海影,李鸿,林列全.2010b.西天山尼勒克北于赞—带下石炭统阿克沙克组扇三角洲相沉积的发现及意义.地质学报,84(10):1470~1478.
林畅松.2009.沉积盆地的层序和沉积充填结构及过程响应.沉积学报,27(5):849~862.
刘静,李永军,王小刚,郭文杰.2006.西天山阿乌拉勒一带伊什基里克组火山岩地球化学特征及构造环境.新疆地质,24(2):105~108.
刘伟,徐永波,衡星,赵同阳.2009.赛里木地块北缘古元古界变质杂岩地质特征及构造意义.新疆地质,27(3):201~206.
龙灵利,高俊,钱青,熊贤明,王京彬,王玉往,高立明.2008.西天山伊犁地区石炭纪火山岩地球化学特征及构造环境.岩石学报,24(4):699~710.
钱青,高俊,熊贤明,龙灵利,黄德志.2006.西天山昭苏北部石炭纪火山岩的岩石地球化学特征、成因及形成环境.岩石学报,22(5):1307~1323.
沙德铭,董连慧,毋瑞身,田昌烈,贾斌.2003.西天山浅成低温金矿容矿火山岩地球化学及成矿环境初探.地质与资源,12(4):206~214.
邵济安,孟庆任,魏海泉,张履桥,王佩瑛.2003.冀西北晚侏罗世火山—沉积盆地的性质及构造环境.地质通报,22(10):751~761.
舒良树,卢华复,印栋浩,马瑞士,夏飞,卢汉.2001.新疆北部古生代大陆增生构造.新疆地质,19(1):59~63.
王博,舒良树,Cluzel D,Faure M,Charvet J.2007.伊犁北部博罗霍努岩体年代学和地球化学研究及其大地构造意义.岩石学报,23(8):1885~1900.
夏林圻,李向民,夏祖春,徐学义,马中平,王立社.2006.天山石炭一二叠纪大火成岩省裂谷火山作用与地幔柱.西北地质,39(1):1~49
杨菲,汪正江,王剑,杜秋定,邓奇,伍皓,周小琳.2012.华南西部新元古代中期沉积盆地性质及其动力学分析——来自桂北丹洲群的沉积学制约.地质论评,58(5):854~864.
杨鑫,王亚东,刘兴旺,郑建京.2012.后碰撞伸展环境下的盆地特征与成盆机制.地质论评,58(3):444~450.
张天继,李永军,王晓刚,栾新东,王谣培,刘静,李鸿,杨高学.2006.西天山伊什基里克山一带东图津河组的确定.新疆地质,24(1):13~15.
张作衡,洪为,蒋宗胜,段士刚,王志华,李凤鸣,石福品,赵军,郑仁乔.2012.新疆西天山晚古生代铁矿床的地质特征、矿化类型及形成环境.矿床地质,31(5):941~964.
朱永峰,张立飞,古丽冰,郭璇,周晶.2005.西天山石炭纪火山岩SHRIMP年代学及微量元素地球化学研究.科学通报,50(18):2004~2014.
朱志新,董连慧,刘淑聪,李锦轶,王克卓,赵同阳,李平,靳留圆.2012.新疆西天山伊犁地块晚古生代火山岩地质特征及构造意义.新疆地质,30(3):258-263.
Coleman R G.1989.Continental growth of northwest China.Tectonics,8(3):621-635.
Dickinson W R,Suczek C.1979.Plate tectonics and sandstone compositions.America Association of Petroleum Geologists Bulletin,63:2164-2182.
Dickinson W R.1985.Interpreting provenance relations from detrital modes of sandstones//Zuff G G.Provenance of Arenites.Dordrecht,The Netherlands,Reidel D,333-361.
Foley S F,Venturelli G,Green D H,Toscani L.1987.The ultrapotassic rocks:characteristics,classification and constraints for pertrogenetic models.Earth-science reviews,24(2):81-134.
Gao Jun,Li Maosong,Xiao Xuchang,Tang Yaoqing,He Guoqi.1998.Paleozoic tectonic evolution of the Tianshan orogen,northwestern China.Tectonophysics,287:216-231.
Jahn B M,Griffin W L,Windley B F.2000.Continental growth in the Phanerozoic;Evidence from Central Asia.Tectonophysics,328:1-227.
Xiao Wenjiao,Han Chunming,Yuan Chao,Sun Min,Lin Shoufa,Chen Hanlin,Li Zilong,Li Jiliang,Sun Shu.2008.Middle Cambrian to Permian subduction-related accretionary orogenesis fo Northern Xinjiang,NW China:implications for the tectonic evolution of central Asia.Journal of Asian Earth Sciences,32:102-117.
Xu Xueyi,Wang Hongliang,Li Ping,Chen Junlun,Ma Zhongping,Zhu Tao,Wang Ning,Dong Yunpeng.2013.Geochemistry and geochronology of Paleozoic intrusions in the Nalati(Narati)area in western Tianshan,Xinjiang,China:implications for Paleozoic tectonic evolution.Journal of Asian Earth Sciences,72:33-62.
Zhang Lifei,Ai Yongliang,Li Xuping,Rubatto D,Song Biao,Williams S,Song Shuguang,Ellis D and Liou J G.2007.Triassic collision of western Tianshan orogenic belt,China:evidence from SHRIMP UPb dating of zircon from HP/UHP eclogitic rocks.Lithos,96:266-280.