东天山晚古生代成矿地质背景分析
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摘要
东天山地区处于哈萨克斯坦与塔里木两大板块之间,地质构造极为复杂,成矿条件有利。本文在总结前人相关分析的基础上,通过研究地层及岩石化学组合特征分析了东天山晚古生代成矿地质背景,得出的主要结论如下:
(1)地层特征分析得出:泥盆-石炭世显示出岛弧海沟系的特征;早二叠世显示出拉张环境的沉积特征;晚二叠世该区结束了岛弧环境,转为陆相沉积。
(2)侵入岩岩石化学成分分析得出:东天山地区在泥盆纪晚期进入碰撞阶段;石炭纪该区处于一个挤压环境;石炭纪晚期到二叠纪,该区由拉张环境向松弛环境转换。
(3)火山岩岩石化学分析结果表明:泥盆纪显示太平洋型钙碱性钠质系列,贫钾的岛弧火山岩特征;石炭纪时期,该区构造环境十分复杂,即有岛弧(IAG)和大陆弧(CAG)的火山岩又有碰撞带(CCG)的火山岩;二叠纪火山岩显示出造山期后(POG)的特征。
(4)构造单元构造应力环境分析得出:泥盆纪火山岩为钙碱性火成岩系列,古生代岛弧,处于挤压应力状态;石炭系的三组酸性火山岩成分中有两组处于挤压应力状态,一组处于应力拉张状态。
Eastern Tianshan Mountain lies between Kazakhstan plate and Tarim plate, its geologic structure is extremely complex, and mineralization condition is advantageous. On basis of some predecessors' correlative study, the metallogenic settings are analyzed in the area during late Paleozoic Era in this article, by studying the characteristics of stratum and the chemical composition of magma. The main conclusions are as follow:
(1) The analysis of stratum's characteristics indicated that the Devonian and Carboniferous showed the characteristic of arc island-oceanic trench. The early Permian demonstrated the sedimentary characteristics of extension environment; this area's environment transferred from Arc Island into continental deposit in Late Permian.
(2) The analysis of chemical composition of intrusive rock indicated that the eastern Tianshan entered into the collision stage in Late Devonian, it was in extrusive environment in Carboniferous, and had a conversion from extensive environment into relaxed from Late Carboniferous to Permian.
(3) The analysis of petrochemistry of volcanic rock indicated: the volcanic rock in Devonian showed characteristics of calcium-alkaline-sodium series and arc island rock; in Carboniferous, the tectonic setting of the area was very complicated, that was, not only the volcanic rock which formed in arc-shaped archipelago (IAG) and mainland arc (CAG) but also formed in collusive belts were all existed. The volcanic rocks in Permian showed characteristic of postorogenic.
(4) The analysis of tectonic stress environment of tectonic units indicated: the volcanic rock in Devonian belonged to calcium-alkaline-sodium series, arc-shaped archipelago of Paleozoic, and it was at the crushing stress condition; two of three group's acidic volcanic rock's elements in Carboniferous were in tension stress, the one was in extensive environment.
(1)地层特征分析得出:泥盆-石炭世显示出岛弧海沟系的特征;早二叠世显示出拉张环境的沉积特征;晚二叠世该区结束了岛弧环境,转为陆相沉积。
(2)侵入岩岩石化学成分分析得出:东天山地区在泥盆纪晚期进入碰撞阶段;石炭纪该区处于一个挤压环境;石炭纪晚期到二叠纪,该区由拉张环境向松弛环境转换。
(3)火山岩岩石化学分析结果表明:泥盆纪显示太平洋型钙碱性钠质系列,贫钾的岛弧火山岩特征;石炭纪时期,该区构造环境十分复杂,即有岛弧(IAG)和大陆弧(CAG)的火山岩又有碰撞带(CCG)的火山岩;二叠纪火山岩显示出造山期后(POG)的特征。
(4)构造单元构造应力环境分析得出:泥盆纪火山岩为钙碱性火成岩系列,古生代岛弧,处于挤压应力状态;石炭系的三组酸性火山岩成分中有两组处于挤压应力状态,一组处于应力拉张状态。
Eastern Tianshan Mountain lies between Kazakhstan plate and Tarim plate, its geologic structure is extremely complex, and mineralization condition is advantageous. On basis of some predecessors' correlative study, the metallogenic settings are analyzed in the area during late Paleozoic Era in this article, by studying the characteristics of stratum and the chemical composition of magma. The main conclusions are as follow:
(1) The analysis of stratum's characteristics indicated that the Devonian and Carboniferous showed the characteristic of arc island-oceanic trench. The early Permian demonstrated the sedimentary characteristics of extension environment; this area's environment transferred from Arc Island into continental deposit in Late Permian.
(2) The analysis of chemical composition of intrusive rock indicated that the eastern Tianshan entered into the collision stage in Late Devonian, it was in extrusive environment in Carboniferous, and had a conversion from extensive environment into relaxed from Late Carboniferous to Permian.
(3) The analysis of petrochemistry of volcanic rock indicated: the volcanic rock in Devonian showed characteristics of calcium-alkaline-sodium series and arc island rock; in Carboniferous, the tectonic setting of the area was very complicated, that was, not only the volcanic rock which formed in arc-shaped archipelago (IAG) and mainland arc (CAG) but also formed in collusive belts were all existed. The volcanic rocks in Permian showed characteristic of postorogenic.
(4) The analysis of tectonic stress environment of tectonic units indicated: the volcanic rock in Devonian belonged to calcium-alkaline-sodium series, arc-shaped archipelago of Paleozoic, and it was at the crushing stress condition; two of three group's acidic volcanic rock's elements in Carboniferous were in tension stress, the one was in extensive environment.
引文
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[24]郭召杰,马瑞士.东天山晚古生代康古尔弧间盆地研究.南京大学学报(地球科学),1990(3):103-113.
[25]李锦轶,王克卓,李文铅等.东天山晚古生代以来大地构造与矿产勘查.新疆地质,2002,20(4):295-301.
[26]李文明,任秉琛,杨兴科等.东天山中酸性侵入岩浆作用及其地球动力学意义[J].西北地质,2002,35(4):41-64
[27]何国琦,李茂松,刘德权等.中国新疆古生代地壳演化与成矿[M].乌鲁木齐:新疆人民出版社,1994,437
[28]徐湘康,李新峰.康古尔塔格韧性剪切带变质作用研究[J].新疆地质,1994,12(3):259-264
[29]刘成德,邬继易,吕喜朝等.中国天山花岗岩类的时空分布及构造意义.新疆地质,1989,7(2):1-12.
[30]R.A.Batchelor,Groves D I.Sopercontinent Cycles and the distribution of metal deposit through timeGeology,1992,20:291-294
[31]吴泰然.花岗岩及其形成的大地构造环境[J].北京大学学报,1995,31(3):358-364
[32]姜立丰,姬厚贵,郑勇.新疆东天山区域构造演化与矿产资源潜力分析.东天山铜多金属矿床成矿过程和成矿动力学及找矿预测新技术新方法会议,2001,73-77.
[33]邓晋福,莫宣学,罗照华等.火成岩构造组合与壳幔成矿系统.地学前缘,1999,6(2):259-270.
[34]李永军,佟丽莉,杜志刚等.东天山库姆塔格垄东岩体岩石地球化学特征及构造意义[J].地质科技情报,2007,26(6):25-35
[35]陈文明.新疆小热泉子铜(锌)矿床同位素研究.地球学报,1999,20(4):349-356.
[36]李凤鸣,王宗社,侯文斌.东天山小热泉子铜矿床综合找矿模型的建立.新疆地质,2002,20(1):38-43.
[37]W.L.Petro.Active geothermal systems and hydrothermal ore deposite.Econ Geol,75th Anniv,1981,1:392-432.
[38]Wilson M.Lgneous petrogenesis.London:Unwin Hyman,1989,287-323
[39]刘德权,唐延龄,周汝洪.中国新疆矿床系列类型.矿床地质,1996.15(3):207-215.
[40]李文渊.西北地区矿产资源找矿潜力[M].北京:地质出版社,
[41]姜福芝,秦克章,方同辉等.东天山铁矿床类型、地质特征成矿规律与找矿方向[J].新疆地质,2002,20(4):379-383
[42]姜福芝.双峰式火山岩与块状硫化物矿床[J].矿床地质,2001,20(4):331-338
[43]王书来,秦克章,方同辉等.新疆东部金矿床类型、成矿特点及找矿方向[J].新疆地质,2002,20(4):375-378
[44]新疆维吾尔自治区地质矿产局.新疆维吾尔自治区区域地质志[M].北京:地质出版社,
[45]秦克章,孙枢,陈海泓.新疆北部金属矿床时空分布格局-古生代多岛海型碰撞造山带的标志[C].见陈海泓主编.中国碰撞造山带研究.1999.北京:地质出版社.183-196.
[2]王作勋,邬继易,吕喜朝等.天山多旋回构造演化与成矿[M].北京:北京科学出版社,1990,217
[3]马瑞士,舒良树,孙家齐.东天山构造演化与成矿[M].北京:地质出版社,1997,202
[4]姬金生,陶洪祥,曾章仁等.东天山康古尔塔格金矿带地质与成矿[M].北京:地质出版社,1994,1-204
[5]周济元,张斌,张朝文等.东天山古大陆及其边缘银、铼钼、金和铜矿地质[M].北京:地质出版社,1996,1-191
[6]黄汲清.中国地质构造基本特征的初步总结[J].地质学报,1960(1):45-52
[7]程裕琪,陈毓川,赵一鸣等.再论矿床的成矿系列问题[J].中国地质科学院院报,1983,总第6号,1-64
[8]张良臣,吴乃元.天山地质构造演化史[J].新疆地质,1985,3(3):1-4
[9]肖序常,汤耀庆,冯益民等.新疆北部及其邻区大地构造[M].北京:地质出版社,1992,1-12
[10]马瑞士,王赐银,叶尚夫等.东天山构造格架及地壳演化[M].南京:南京大学出版社,1993,9-22
[11]周济元,茅燕石,黄志勋等.东天山古大陆边缘火山地质[M].成都:成都科技大学出版社,1994.1-280.
[12]冯益民,朱宝清,杨军录等.东天山大地构造及演化--1:50万东天山大地构造图简要说明[J].新疆地质,2002(4):21-26
[13]秦克章,方同辉,王书来.东天山板块构造分区、演化与成矿地质背景研究[J].新疆地质,2002,20(4):14-20
[14]韩春明,毛景文,杨建民等.东天山晚古生代内生金属矿床成矿系列合成矿规律[J].地质与勘探,2002,38(5):5-10
[15]杨兴科,程宏宾,姬金生等.东天山金铜成矿背景与成矿系统分析[J].西安工程学院学报,2000,22(2):7-13
[16]毛景文,杨建民,韩春明等.东天山铜金多金属矿床成矿系统和成矿地球动力学模型[J].地球科学,2002,27(4):413-424
[17]陈文明.论东天山土屋-延东铜矿的容矿岩.东天山铜多金属矿床成矿过程和成矿动力学及找矿预测新技术新方法会议[A],2001,65-67.
[18]李华芹,谢才富,常海亮等.新疆北部有色贵金属矿床成矿作用年代学[M].北京:地质出版社,1998,264
[19]姬金生,张连昌,曾章仁等.东天山康古尔塔格金矿带年代学研究[J].地质科学,1996,32(1):80-89
[20]新疆维吾尔自治区地质矿产局.新疆维吾尔自治区区域地质志[M].北京:地质出版社
[21]陈哲夫,成守德,梁云海等.新疆开合构造与成矿[M].乌鲁木齐:新疆科技卫生出版社,1997,394
[22]邓振球.东天山航空磁异常特征及地质解释[J].新疆地质,2002,20(4):320-324
[23]王福同,冯京,胡建卫等.新疆土屋大型斑岩铜矿床特征及发现意义[J].中国地质,2001,28(1):36-39.
[24]郭召杰,马瑞士.东天山晚古生代康古尔弧间盆地研究.南京大学学报(地球科学),1990(3):103-113.
[25]李锦轶,王克卓,李文铅等.东天山晚古生代以来大地构造与矿产勘查.新疆地质,2002,20(4):295-301.
[26]李文明,任秉琛,杨兴科等.东天山中酸性侵入岩浆作用及其地球动力学意义[J].西北地质,2002,35(4):41-64
[27]何国琦,李茂松,刘德权等.中国新疆古生代地壳演化与成矿[M].乌鲁木齐:新疆人民出版社,1994,437
[28]徐湘康,李新峰.康古尔塔格韧性剪切带变质作用研究[J].新疆地质,1994,12(3):259-264
[29]刘成德,邬继易,吕喜朝等.中国天山花岗岩类的时空分布及构造意义.新疆地质,1989,7(2):1-12.
[30]R.A.Batchelor,Groves D I.Sopercontinent Cycles and the distribution of metal deposit through timeGeology,1992,20:291-294
[31]吴泰然.花岗岩及其形成的大地构造环境[J].北京大学学报,1995,31(3):358-364
[32]姜立丰,姬厚贵,郑勇.新疆东天山区域构造演化与矿产资源潜力分析.东天山铜多金属矿床成矿过程和成矿动力学及找矿预测新技术新方法会议,2001,73-77.
[33]邓晋福,莫宣学,罗照华等.火成岩构造组合与壳幔成矿系统.地学前缘,1999,6(2):259-270.
[34]李永军,佟丽莉,杜志刚等.东天山库姆塔格垄东岩体岩石地球化学特征及构造意义[J].地质科技情报,2007,26(6):25-35
[35]陈文明.新疆小热泉子铜(锌)矿床同位素研究.地球学报,1999,20(4):349-356.
[36]李凤鸣,王宗社,侯文斌.东天山小热泉子铜矿床综合找矿模型的建立.新疆地质,2002,20(1):38-43.
[37]W.L.Petro.Active geothermal systems and hydrothermal ore deposite.Econ Geol,75th Anniv,1981,1:392-432.
[38]Wilson M.Lgneous petrogenesis.London:Unwin Hyman,1989,287-323
[39]刘德权,唐延龄,周汝洪.中国新疆矿床系列类型.矿床地质,1996.15(3):207-215.
[40]李文渊.西北地区矿产资源找矿潜力[M].北京:地质出版社,
[41]姜福芝,秦克章,方同辉等.东天山铁矿床类型、地质特征成矿规律与找矿方向[J].新疆地质,2002,20(4):379-383
[42]姜福芝.双峰式火山岩与块状硫化物矿床[J].矿床地质,2001,20(4):331-338
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