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利用小波分析方法对天山造山带与准噶尔盆地壳幔过渡带的反射波进行处理,获得了来自各个爆炸点亮幔过渡带反射波走时曲线.计算结果表明,沙雅-布尔津地学断面的壳幔过渡带根据其特点可以分为三段:塔里木盆地北缘、断天山造山带与准噶尔盆地.塔里木盆地北缘的壳幔过渡带比较简单,主要由一级间断面构成;准噶尔盆地的壳幔过渡带也比较简单,除个别地段外皆以一级速度间断面过渡;天山造山带(尤其是北天山)的壳幔过渡带十分复杂,它由7~8个薄层叠合而成,层厚度2~3km不等,层速度高低相间,总厚度近20km.天山造山带与准噶尔盆地壳幔过渡带的结构特点及其两者之间的差异特征是天山造山带地球动力学“层间插入消减”模型建立的重要依据之一.
Wavelet analysis method was used to process the reflected waves in the crust-mantle transitional zone of the Tianshan orogenic belt and the Junggar Basin, and the time-lapse curves of the reflected waves from the bright-mantle transitional zone were obtained. The calculation results show that the crust-mantle transitional zone of the Shaya-Burqin geostatistics section can be divided into three sections according to its characteristics: the northern margin of Tarim Basin, the fault Tianshan orogenic belt and the Junggar Basin. The crust-mantle transitional zone in the northern margin of the Tarim Basin is relatively simple and consists mainly of first-order intercepts. The crust-mantle transitional zone in the Junggar Basin is relatively simple, with transitional velocities at first velocity except for individual areas. The Tianshan orogen North Tianshan) crust-mantle transitional zone is very complex, it consists of 7 to 8 laminated layers, the thickness of 2 ~ 3km range, the level of velocity between the phase, the total thickness of nearly 20km. The structural characteristics of the crust-mantle transitional zone between the Tianshan orogenic belt and the Junggar basin and the difference between them are one of the important bases for the establishment of the model of “inter-layer insertional abatement” of the Tianshan orogenic belt.