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根据对恒河盆地西部的多振型宽频带面波频散资料的分析推断,该区的地壳结构不具有大陆地盾的特征,相反,却非常象某些海洋高地。这一异常的海洋型地壳与恒河盆地东部地盾地壳的分界线可能在阿拉瓦利山脉(Aravalli Ridge)。该处地壳的地质特征具有异常高的电导率,其走向垂直于喜马拉雅山脉。目前广为接受的假定认为是构造均匀的印度大陆岩石圈向喜马拉雅山下俯冲。本文的研究结果对此观点提出了置疑:在北部印度大陆内的地壳运动可能存在着差异。我们追溯印度-欧亚大陆的碰撞历史,这个因素恐怕是不容忽视的。
Based on the analysis of the multi-mode wide-band surface wave dispersion data in the western part of the Ganges basin, it is inferred that the crustal structure in this area does not have the characteristics of the continental shield, but rather resembles some oceanic highlands. The dividing line between this anomalous oceanic crust and the Earth’s crust in the eastern Ganges basin may be in the Aravalli Ridge. The geological features of the crust here have unusually high conductivity, which runs perpendicular to the Himalayas. The now widely accepted assumption is that a well-structured Indian lithosphere dive beneath the Himalayas. The findings of this paper raise questions about this view: There may be differences in crustal movement in the northern Indian continent. We trace the history of collision between India and Eurasia. This factor can not be ignored.