GEODYNAMIC ACTIVITY OF MODERN STRUCTURES AND TECTONIC STRESS FIELDS IN NORTHEAST ASIA

Based on the analysis of changes in the stress-strain state of the crust at the boundary of the Eurasian and North American tectonic plates, we develop a dynamic model of the main seismogenerating structures inNortheast Asia. We have established a regularity in changes of geodynamic regimes within t...

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Bibliographic Details
Published in:Geodynamics & Tectonophysics
Main Authors: L. P. Imaeva, G. S. Gusev, V. S. Imaev, S. V. Ashurkov, V. I. Melnikova, A. I. Seredkina
Format: Article in Journal/Newspaper
Language:English
Russian
Published: Russian Academy of Sciences, Siberian Branch, Institute of the Earth's crust 2017
Subjects:
regional segments
active faults
parageneses of active structures
paleoseismogenic structures
late cenozoic deformation
earthquake focal mechanism
seismotectonic deformation
gps data
crustal stress-strain state
Science
Q
Laptev Sea
Pacific
Kolyma
Gakkel Ridge
Kharaulakh
Chukotka
Koryak
laptev
Aleutian Islands
Online Access:https://doi.org/10.5800/GT-2017-8-4-0315
https://doaj.org/article/bf48be9363e5461384e80079a21e39f4
Description
Summary:Based on the analysis of changes in the stress-strain state of the crust at the boundary of the Eurasian and North American tectonic plates, we develop a dynamic model of the main seismogenerating structures inNortheast Asia. We have established a regularity in changes of geodynamic regimes within the interplate boundary between the Kolyma-Chukotka crustal plate and the Eurasian, North American and Pacific tectonic plates: spreading in the Gakkel Ridge area; rifting in the Laptev Sea shelf; a mixture of tectonic stress types in the Kharaulakh segment; transpression in the Chersky seismotectonic zone, in the segment from the Komandor to the Aleutian Islands, and in the Koryak segment; and crustal stretching in the Chukotka segment.

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