库尔勒-吉木萨尔剖面Q值结构及其动力学意义
摘要
介绍了二维横向非均匀介质Q值结构反演方法,利用横跨天山造山带的库尔勒.吉木萨尔剖面人工地震宽角反射/折射资料实现了二维Q值结构反演,获得了库尔勒-吉木萨尔剖面岩石圈二维Q值结构.结果表明,库尔勒-吉木萨尔剖面的岩石圈二维Q值结构具纵向分层、横向分区的特点.纵向上可分为上、中、下地壳,Q值分布有规律地递增;横向上,剖面大体可分为塔里木盆地北缘、天山造山带和准噶尔盆地南缘.在塔里木盆地北缘,Q值由南向北逐渐增加,意味着塔里木盆地在向天山造山带的深部俯冲;天山造山带内部Q值在库米什附近发生跳跃,形成台阶状系统差异;准噶尔盆地南缘的Q值分布给出了准噶尔盆地向博格达山下俯冲的图像.库尔勒-吉木萨尔剖面所揭示的塔里木盆地与准噶尔盆地向天山造山带的对冲与沙雅-布尔津剖面所揭示的塔里木盆地向天山造山带“层间插入与俯冲消减”、准噶尔盆地与天山造山带主要以走滑接触形成明显的差异,为东西天山的分段提供了岩石圈尺度的动力学依据.
引文
1) 张先康,张成科,嘉世旭,等.地学大断面人工地震探测与研究.结题报告,1999
2) 徐新忠,等.可可托海-木垒-哈密-柳园-阿克塞综合地球物理测深剖面人工爆破地震测深成果报告.1990
1) 赵俊猛,张先康,王尚旭,等.准噶尔盆地、天山造山带、塔里木盆地、阿尔金造山带、柴达木盆地和昆仑造山带(北缘)地球动力学研究课题阶段总结报告.2001
1) 见207页脚注
2) 赵俊猛,徐 杰.准噶尔盆地地学断面Ⅳ.准噶尔盆地地球物理资料综合研究总结报告,2001
1 Burtman V S. Molnar Peter. Geological and Geophysical Evidence for Deep Subduction of Continental Crust Beneath the Pamir. Geological Society of America, Inc, 1993
2 赵俊猛,刘国栋,卢造勋,等.天山造山带与准噶尔盆地壳幔过渡带及其动力学含义.中国科学,D辑,2001,31(4) :272-282
3 Zhao Junmeng, Liu Guodong, Lu Zaoxun, et al. A geodynamic model for quickly uplifting of the Tianshan orogenic belt. '99 International Symposium on Tianshan Earthquakes: Organizing Committee of '99International Symposium on Tianshan Earthquakes, Urumqi, 1999． 175-177
4 Zhao Junmeng. Lithospheric structure and dynamic processes of the Tianshan orogenic belt and the Junggar basin. In: Second World Chinese Conference on Geological Sciences, 2000． A364-A368
5 赵俊猛,张先康,赵国泽,等.不同构造环境下的壳-幔过渡带结构,地学前缘,1999,6(3) :165-172
6 赵俊猛,张先康,王尚旭,等中国西部天山造山带、塔里木盆地、阿尔金造山带、柴达木盆地、昆仑造山带(北缘)地球动力学研究.中国地球物理年会会刊,2001,34～36
7 Aki K, Richards P G. Quantitative Seismology: Theory and Methods. San Francisco: W H Freeman Company, 1980
8 Haskell N A. Crustal reflection of plane p and sv waves. J Geophys Res, 1962, 67: 4746-4751
9 Jonathan M L, Lindleg G T. Three-dinensional attenuation tomgraphy at Loma Prieta: Inverting of t* for Q. J Geophys Res, 1994, 99(B4) : 6843-6863
2) 徐新忠,等.可可托海-木垒-哈密-柳园-阿克塞综合地球物理测深剖面人工爆破地震测深成果报告.1990
1) 赵俊猛,张先康,王尚旭,等.准噶尔盆地、天山造山带、塔里木盆地、阿尔金造山带、柴达木盆地和昆仑造山带(北缘)地球动力学研究课题阶段总结报告.2001
1) 见207页脚注
2) 赵俊猛,徐 杰.准噶尔盆地地学断面Ⅳ.准噶尔盆地地球物理资料综合研究总结报告,2001
1 Burtman V S. Molnar Peter. Geological and Geophysical Evidence for Deep Subduction of Continental Crust Beneath the Pamir. Geological Society of America, Inc, 1993
2 赵俊猛,刘国栋,卢造勋,等.天山造山带与准噶尔盆地壳幔过渡带及其动力学含义.中国科学,D辑,2001,31(4) :272-282
3 Zhao Junmeng, Liu Guodong, Lu Zaoxun, et al. A geodynamic model for quickly uplifting of the Tianshan orogenic belt. '99 International Symposium on Tianshan Earthquakes: Organizing Committee of '99International Symposium on Tianshan Earthquakes, Urumqi, 1999． 175-177
4 Zhao Junmeng. Lithospheric structure and dynamic processes of the Tianshan orogenic belt and the Junggar basin. In: Second World Chinese Conference on Geological Sciences, 2000． A364-A368
5 赵俊猛,张先康,赵国泽,等.不同构造环境下的壳-幔过渡带结构,地学前缘,1999,6(3) :165-172
6 赵俊猛,张先康,王尚旭,等中国西部天山造山带、塔里木盆地、阿尔金造山带、柴达木盆地、昆仑造山带(北缘)地球动力学研究.中国地球物理年会会刊,2001,34～36
7 Aki K, Richards P G. Quantitative Seismology: Theory and Methods. San Francisco: W H Freeman Company, 1980
8 Haskell N A. Crustal reflection of plane p and sv waves. J Geophys Res, 1962, 67: 4746-4751
9 Jonathan M L, Lindleg G T. Three-dinensional attenuation tomgraphy at Loma Prieta: Inverting of t* for Q. J Geophys Res, 1994, 99(B4) : 6843-6863
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