Young landforms created by earthquakes in the foothills of the Kurai Range (Gorny Altai)
1 Schmidt Institute of Physics of the Earth, Russian Academy of Sciences
2 Novosibirsk State University
3 Trofimuk Institute of Petroleum Geology and Geophysics of the Siberian Branch of the Russian Academy of Sciences
Journal: Problems of Engineering Seismology
Tome: 49
Number: 1
Year: 2022
Pages: 52-71
UDK: 551.2/3
DOI: 10.21455/VIS2022.1-4
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Korzhenkov
E.V A.M. Young landforms created by earthquakes in the foothills of the Kurai Range (Gorny Altai) // . 2022. Т. 49. № 1. С. 52-71. DOI: 10.21455/VIS2022.1-4
@article{Korzhenkov
E.VYoung2022,
author = "Korzhenkov
E.V, A. M.",
title = "Young landforms created by earthquakes in the foothills of the Kurai Range (Gorny Altai)",
journal = "Problems of Engineering Seismology",
year = 2022,
volume = "49",
number = "1",
pages = "52-71",
doi = "10.21455/VIS2022.1-4",
language = "English"
}
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Keywords: paleoseismology, fault scarp, forberg, paleoearthquake, Kurai Fault Zone, Gorny Altai
Аnnotation: Structural and geomorphological studies were carried out in the foothills of the Kurai Range in the southeast of Gorny Altai. It is shown that the structure of the Kurai Fault Zone here is determined by the north-dipping reverse faults and thrusts, along which the Kurai Range thrusts onto the deposits of the Chuya and Kurai basins. They are feathered by south-dipping backthrusts. Displacements along these fault systems lead to the growth of forbergs in front of the range front and the separation of smaller negative morphostructures from the Chuya and Kurai basins. Numerous fault scarps are established along the faults, which are the outlets of seismic sources of paleo-earthquakes to the surface. For a number of scarps, along with the vertical one, the shear component of the displacements is also read in the relief. Some fault scarps have an age within the first hundreds of years and arose in the sources of paleoearthquakes with minimal MW = 6.7–7.3.