南天山冲断带与帕米尔冲断带构造接触关系探讨
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摘要
南天山冲断带与帕米尔冲断带位于塔里木盆地西北缘,在乌恰以北地区两大冲断系统在地表交接。本文综合利用地震剖面解释和地面地质资料分析,通过对研究区三条区域地质剖面的结构分析,取得以下一些研究成果:1.帕米尔冲断系统的前锋成为一个弧形构造带,与南天山冲断系统形成了交错叠置的关系;南天山冲断带大多形成深层次的冲断褶皱作用;2.从地理上划分了南天山和帕米尔冲断系统的构造分界线;3.从东往西,帕米尔冲断系统往北逆冲推覆作用逐渐加强,到达西部弧形构造带顶端,其与南天山冲断系统直接在地表相互交汇,塔里木盆地在此处到达西北端尽头。4.划分出两大冲断系统的次级构造单元。
South Tienshan thrust belt and Pamir thrust belt are located in Tarim basin,and they join together on the surface in the north of Wuqia county.This paper uses various data such as 2D seismic profile and field geologic survey,through the study of three regional geological sections,obtains the following results:1.The pamir thrust system forword has become arc structural belt,and formed a cross superimposed relationship with South Tienshan thrust system;the South Tienshan thrust system forms deep-level fold-thrust effect;2.From the geographically,construction line has been divided between South Tienshan and Pamir thrust system;3.The thrusting nappe structure to the north of the pamir thrust system has increased from east to west,Pamir thrust system and South Tienshan thrust system intersection together on the surface when Pamir thrust system reached to the top of west arc structural belt,and it has reached the end of the northwestern Tarim basin;4.This paper divided sub-structural units of two thrust system
South Tienshan thrust belt and Pamir thrust belt are located in Tarim basin,and they join together on the surface in the north of Wuqia county.This paper uses various data such as 2D seismic profile and field geologic survey,through the study of three regional geological sections,obtains the following results:1.The pamir thrust system forword has become arc structural belt,and formed a cross superimposed relationship with South Tienshan thrust system;the South Tienshan thrust system forms deep-level fold-thrust effect;2.From the geographically,construction line has been divided between South Tienshan and Pamir thrust system;3.The thrusting nappe structure to the north of the pamir thrust system has increased from east to west,Pamir thrust system and South Tienshan thrust system intersection together on the surface when Pamir thrust system reached to the top of west arc structural belt,and it has reached the end of the northwestern Tarim basin;4.This paper divided sub-structural units of two thrust system
引文
[1]钱俊锋,肖安成,程晓敢,等.喀什北缘南天山冲断带构造变形分析[J].中国矿业大学学报(中文版),2008,37(4):538-544.
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[6]陈杰,丁国瑜,Burbank,等.中国西南天山山前的晚新生代构造与地震活动[J].中国地震,2001,17(2):134-154.
[7]沈军,汪一鹏,赵瑞斌.帕米尔东北缘及塔里木盆地西北部弧形构造的扩展特征[J].地震地质,2001,23(3):381-389.
[8]Molnar and Tapponnier,P.,1975,Cenozoic tectonics ofAsia:effects on a continental collision[J].Science,189:419-426.
[9]周新源,罗金海,买光荣,等.塔里木盆地喀什凹陷及其周边地区构造特征与油气地质[M].北京:石油工业出版社,2005.
[10]薛崇武.喀什及邻区区域构造体系特征[J].新疆地质,2001,19(1):74-74.
[11]伍秀芳.塔里木盆地西南缘前陆褶皱冲断带构造几何学和运动学分析[D].浙江大学,博士论文,2003.
[2]钱俊锋,塔里木盆地西北缘中、新生代构造特征及演化[D].浙江大学,博士论文,2008.
[3]钱俊锋,肖安成,张微,等.南天山西段前陆褶皱冲断带平衡剖面分析[J].科技通报,2009,25(4):402-406.
[4]肖安成,贾承造,杨树锋,等.中国南天山西部冲断褶皱系前缘区的运动学特征[J].沉积学报,2000,18(3):439-444.
[5]尚新璐,陈新卫,吴超,等,塔里木盆地西部喀什地区的新生代冲断构造[J].地质科学,2004,39(4):543-550.
[6]陈杰,丁国瑜,Burbank,等.中国西南天山山前的晚新生代构造与地震活动[J].中国地震,2001,17(2):134-154.
[7]沈军,汪一鹏,赵瑞斌.帕米尔东北缘及塔里木盆地西北部弧形构造的扩展特征[J].地震地质,2001,23(3):381-389.
[8]Molnar and Tapponnier,P.,1975,Cenozoic tectonics ofAsia:effects on a continental collision[J].Science,189:419-426.
[9]周新源,罗金海,买光荣,等.塔里木盆地喀什凹陷及其周边地区构造特征与油气地质[M].北京:石油工业出版社,2005.
[10]薛崇武.喀什及邻区区域构造体系特征[J].新疆地质,2001,19(1):74-74.
[11]伍秀芳.塔里木盆地西南缘前陆褶皱冲断带构造几何学和运动学分析[D].浙江大学,博士论文,2003.
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