{"title":"Structural-Density Model of the Earth’s Crust within the Sakhalin Western Shelf and Its Geological Interpretation","authors":"Z. N. Proshkina, M. G. Valitov, I. A. Sigeev","doi":"10.1134/s1819714024700106","DOIUrl":null,"url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Structural-density modeling of the Earth’s crust carried out using a deep seismic sounding profile previously tested along the western shelf of Sakhalin Island offered a clearer view of the layered block structure of the main tectonic faults and their system within the crust of the region, which accumulate a large number of strong crustal earthquakes. The density structures of the resulting model were compared with geological data on the adjacent territory of Sakhalin Island. Our structural-density model made it possible to separate volcanic blocks and blocks of basified sialic crust and to trace the submarine prolongation of the largest geological complexes of the western margin of Sakhalin Island to the shelf. A spatial correlation between seismic events and some tectonic faults is observed.</p>","PeriodicalId":49583,"journal":{"name":"Russian Journal of Pacific Geology","volume":"13 1","pages":""},"PeriodicalIF":0.9000,"publicationDate":"2024-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Russian Journal of Pacific Geology","FirstCategoryId":"89","ListUrlMain":"https://doi.org/10.1134/s1819714024700106","RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"GEOSCIENCES, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
Structural-density modeling of the Earth’s crust carried out using a deep seismic sounding profile previously tested along the western shelf of Sakhalin Island offered a clearer view of the layered block structure of the main tectonic faults and their system within the crust of the region, which accumulate a large number of strong crustal earthquakes. The density structures of the resulting model were compared with geological data on the adjacent territory of Sakhalin Island. Our structural-density model made it possible to separate volcanic blocks and blocks of basified sialic crust and to trace the submarine prolongation of the largest geological complexes of the western margin of Sakhalin Island to the shelf. A spatial correlation between seismic events and some tectonic faults is observed.
期刊介绍：
Russian Journal of Pacific Geology publishes the results of research on the Earth crust and mantle composition and provides articles on the geological structure and patterns of distribution of mineral deposits in the Pacific Ocean, marginal seas and continental margins. It discusses the topics of stratigraphy, sedimentology, magmatic activity, and seismicity. The journal deals with the problems of lithosphere plates tectonics, and offers the results of neotectonic, geomorphological, geodesic, environmental and mining studies in the Pacific region. The journal accepts theoretical, methodical and philosophical articles covering general issues of geology, geophysics, geochemistry, geoecology and mining. The journal also publishes critical notes and comments, and reviews.
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