Abstract

New results of a detailed study of the deep structure of the Central Tien Shan along the Son-Kul magnetotelluric (MT) profile crossing the Son-Kul Lake are reported. Based on the results of magnetotelluric data modeling, the regional and local geoelectric anomalies in the lithosphere are studied and their quantitative characteristics are given. Geological interpretation of the geoelectric cross-section was carried out, which supported the existing ideas about the block–hierarchical structure of the upper part of the Earth’s crust. This corresponds to the tectonophysical concepts of the sequential inserted subordination of large and smaller elements of the zone–block structure consisting of stable blocks and limiting mobile zones, which are distinguished by the high dislocation of the geological substrate. The integral pattern of the distribution and morphology of zones of high electrical conductivity in this segment of the Central Tien Shan crust may reflect discretely localized palm tree–type structures associated with the evolution of transgressive suture zones of localized deformation during the Hercynian and Alpine tectogenesis.

中文翻译：

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Son-Kul大地电磁测深剖面中天山中层岩石圈的深层结构

摘要

据报道，详细的研究结果表明，中山的中部沿Son-Kul大地电磁（MT）剖面穿过Son-Kul湖的深部结构。根据大地电磁数据建模的结果，研究了岩石圈的区域和局部地电异常，并给出了其定量特征。进行了对地电断面的地质解释，这支持了有关地壳上部的块状分层结构的现有观念。这对应于由稳定块和有限活动带组成的区域-块结构的较大和较小元素的顺序插入从属的构造物理概念，其特征是地质基质的高度错位。