Abstract

The magnetotelluric sounding results obtained in three profiles in the northern part of the Southern Sikhote-Alin region across its strike have been considered. Geoelectric sections have been constructed to a depth of 150 km and a three-dimensional model of electrical resistivity of the study area has been calculated. Sections have been constructed for depths of 5.5, 9, 15, 20, 30, and 40 km. Based on the obtained materials, the geoelectric heterogeneities of the study area have been analyzed and their geological interpretation has been proposed. Low electrical resistivity anomalies of less than 100 Ohm m located at depths from the surface of up to 40 km have been identified within the earth’s crust, and their morphological features have been shown. Some of them are related to deep faults, while others are spatially correlated with known ore districts and record the regions with an anomalously high destruction and fluid saturation of the earth’s crust, which are likely areas enriched in conductive ore minerals. The spatial distribution of the coast effect and its influence on the magnetovariation parameters within the study area have been considered.

中文翻译：

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根据大地电磁测深数据显示南锡霍特-阿林地区北部岩石圈结构

摘要

已经考虑了在南锡霍特-阿林地区北部跨越其走向的三个剖面中获得的大地电磁探测结果。已构建了150公里深度的地电剖面，并计算了研究区的电阻率三维模型。已建造的部分深度为 5.5、9、15、20、30 和 40 公里。根据所获得的资料，对研究区的地电非均质性进行了分析，并提出了其地质解释。地壳内距地表深度达40公里处已发现小于100欧姆·米的低电阻率异常，并显示了其形态特征。其中一些与深层断层有关，而另一些则与已知矿区在空间上相关，并记录了地壳破坏和流体饱和度异常高的区域，这些区域可能富含导电矿石矿物。考虑了研究区内海岸效应的空间分布及其对磁变参数的影响。