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

• 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

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.