西天山造山带双变质带变质变形序列分析——以新疆昭苏县察汗乌苏一带为例
The Analysis of Metamorphism-deformation Sequence for the Paired Metamorphic Belt in West Tianshan Orogen:An Example from Chahanwusu Area, Zhaosu County, Xinjiang
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摘要: 西天山造山带中双变质带以新疆昭苏察汗乌苏一带较为典型,根据变质作用的不同,划分出绿片岩相绢云母-绿泥石带、绿片岩相蓝闪石带、角闪岩相黑云母-普通角闪石带、角闪岩相矽线石-铁铝榴石带等变质相带;按其变质作用以及构造变形程度分为上部层次脆性性构造层、中上部层次、深部层次3种构造层次。根据之间的相互叠加关系,确立了造山带内的岩石主要存在着3期以上构造变形特征;在主要的3期构造变形过程中见有相应的变质矿物,并根据生成的矿物组合与变形之间的相互关系,通过变质矿物先后生成关系与岩石的结构、构造建立了变质与变形序列关系,确立了变质与变形非简单一一对应,而是具有渗透叠加和循环往复的特点。Abstract: The paired metamorphic belt of West Tianshan Orogen is more typical in Chahanwusu Area, Xinjiang. According to the difference of metamorphism, this paired metamorphic belt can be divided into several metamorphic facies zone, including sericite-chlorite zone with greeanschistfacies, glaucophane zone with greenschist facies,biotite-hornblende zone with amphibolite facies belt and sillimanite-almandite zone with amphibolite facies. Based on the degree of metamorphism and tectonic deformation, this paired metamorphic belt can be divided into three kinds of structural levels:the brittle structural layer in the upper level, the structural layers in the middle-upper level and the ones in the lower level. After analyzing the superimposed relationship among these structural levels, more than threetimes of tectonic deformation characteristics have been distinguished in the rocks of West Tianshan Orogen. And the corresponding metamorphic minerals for these three tectonic stages in the process of deformation can be observed. And then, the interrelationship between generated mineral association and deformation has been discussed, the relationship between metamorphism and deformation sequence has been established according on analyzing the produce order of metamorphic mineral, the rocks' textures and tectonic. Finally, it's certain that the relationship between metamorphism and deformation is not a simple one-to-one relationship, but has the characteristics of penetration superposition and circulation.
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王宝瑜,郎智君,李向东,等.中国天山西段地质剖面综合研究[M].北京:科学出版社,1994.
WANG Baoyu,LANG Zhijun,LI Xiangdong,et al. Mountain geological profile comprehensive research in westernTianshan China[M]. Beijing:Science Press, 1994.
王作勋,邬继易,吕喜朝,等.天山多旋回构造演化及成矿[M].北京:科学出版社,1990:103-128.
WANG Zuoxun, WU Jiyi, LU Xichao, et al. Tianshan polycyclic tectonic evolution and mineralization[M]. Beijinag:Science Press, 1990:103-128.
肖序常,汤耀庆,冯益民,等.新疆维吾尔自冶区区域地质志[M].北京:地质出版社,1992:1-11.
XIAO Xuchang, TANG Yaoqing,FENG Yimin, et al.Regional geology of Xinjiang uighur Autonomous Region[M]. Beijing:Geological Publishing House, 1992:1-11.
高俊,何国琦,李荗松,等.西天山造山带的古生代造山过程[J].地球科学,1997,22(1):27-32.
GAO Jun,HE Guoqi,LI Maoseng,et al. Paleozoic orogenic process of Western Tianshan Orogenic[J]. Earth Science, 1997,22(1):27-32.
高俊,钱青,龙灵利,等.西天山的增生造山过程[J].地质通报,2009,28(12):1804-1816.
GAO Jun,QIAN Qing,LONG Lingli,et al. Accretionary of orogenic process Western Tianshan[J]. Geological Bulletin of China, 2009, 28(12):1804-1816.
魏永峰,邓泽锦,李建兵,等.西天山木扎尔特群长英质岩地球化学特征及U-Pb年龄的地学意义[J].新疆地质,2010,28(2):125-129.
WEI Yongfeng,DENG Zejin,LI Jianbing, et al. The geochemical behavior and geological significance of the U-Pb age dating on qurtz-felddspathic rocks in Western muzhaerte,southwest Tianshan[J]. Xinjiang Geology, 2010,28(2):125-129.
于海峰,王福君,潘明臣,等.西天山古元古代木扎尔特岩群地质特征及时代厘定[J].新疆地质,2010,29(1):20-25.
YU Haifeng,WANG Fujun, PAN Mingchen, et al. Geolgical Characteristics and Ages Assurance of the Muzhaerte Group Complex of Palaeoprote Rozoic in Western Tianshan Mountain[J]. Xinjiang Geology, 2010,29(1):20-25.
中国科学院登山斜学考察队.天山托木儿峰地区的地质与古生物[M].乌鲁木齐:新疆人民出版社,1985.
Academy of sciences expedition Climbing inclined Scientific expedition team of the China. Tianshan tomsk son peak areas of geology and paleontology[M]. Urumqi:Xinjiang People's Publishing House, 1985.
于海峰,王福君,潘明臣,等.西天山造山带区域构造演化及其大陆动力学解析[J].西北地质,2011,44(2):25-40.
YU Haifeng,WANG Fujun, PAN Mingchen, et al. Tectonic Division and Rettectonic Tectonic Evolution of West Tianshan Orogenic Belt[J]. Northwestern Geology, 2011, 44(2):25-40.
朱志新,董连慧,王克桌,等.西天山造山带构造单元划分与构造演化[J].地质通报,2013,32(2):297-306. ZHU Zhuxin, DONG Lianhui,WANG Kezhuo,et al. Some thoughts on the characteristics of Paleozoic ocean-continent transition from Tianshan mountains[J]. Geological Bulletin of China, 2013,32(2):297-306.
夏林圻,夏祖春,徐学义,等.天山古生代洋陆转化特点的几点思考[J].西北地质,2002,35(4):9-20. XIA Linqi, XIA Zuchun, XU Xueyi,et al. Some thoughts on the characteristics of Paleozoic ocean-continent transition from Tianshan mountains[J]. Northwestern Geology, 2002, 35(4):9-20.
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