{"title":"Young Landforms Created by Earthquakes in the Foothills of the Kurai Range (Gorny Altai)","authors":"A. M. Korzhenkov, E. V. Deev, N. I. Pozdnyakova","doi":"10.3103/S0747923922040065","DOIUrl":null,"url":null,"abstract":"<p>Structural and geomorphological studies were carried out in the foothills of the Kurai Range in southeast Gorny Altai. It is shown that the structure of the Kurai Fault Zone here is governed by north-dipping reverse faults and thrusts, along which the Kurai Range thrusts onto deposits of the Chuya and Kurai depressions. They are feathered by south-dipping backthrusts. Displacements along these fault systems lead to growth of forbergs in front of the range front and separation of smaller negative morphostructures from the Chuya and Kurai depressions. Numerous fault scarps have been revealed along the faults, which are outlets of seismic sources of paleoearthquakes to the surface. For a number of scarps, in addition to the vertical component, the strike-slip component of displacements is also read in the relief. Some fault scarps have an age of a few hundred years and arose in the sources of paleoearthquakes with minimal magnitude: <i>M</i><sub><i>W</i></sub> = 6.7–7.3.</p>","PeriodicalId":45174,"journal":{"name":"Seismic Instruments","volume":null,"pages":null},"PeriodicalIF":0.3000,"publicationDate":"2022-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"3","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Seismic Instruments","FirstCategoryId":"1085","ListUrlMain":"https://link.springer.com/article/10.3103/S0747923922040065","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"GEOCHEMISTRY & GEOPHYSICS","Score":null,"Total":0}
引用次数: 3
Abstract
Structural and geomorphological studies were carried out in the foothills of the Kurai Range in southeast Gorny Altai. It is shown that the structure of the Kurai Fault Zone here is governed by north-dipping reverse faults and thrusts, along which the Kurai Range thrusts onto deposits of the Chuya and Kurai depressions. They are feathered by south-dipping backthrusts. Displacements along these fault systems lead to growth of forbergs in front of the range front and separation of smaller negative morphostructures from the Chuya and Kurai depressions. Numerous fault scarps have been revealed along the faults, which are outlets of seismic sources of paleoearthquakes to the surface. For a number of scarps, in addition to the vertical component, the strike-slip component of displacements is also read in the relief. Some fault scarps have an age of a few hundred years and arose in the sources of paleoearthquakes with minimal magnitude: MW = 6.7–7.3.
期刊介绍：
Seismic Instruments is a journal devoted to the description of geophysical instruments used in seismic research. In addition to covering the actual instruments for registering seismic waves, substantial room is devoted to solving instrumental-methodological problems of geophysical monitoring, applying various methods that are used to search for earthquake precursors, to studying earthquake nucleation processes and to monitoring natural and technogenous processes. The description of the construction, working elements, and technical characteristics of the instruments, as well as some results of implementation of the instruments and interpretation of the results are given. Attention is paid to seismic monitoring data and earthquake catalog quality Analysis.
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