Тип публикации: статья из журнала

Год издания: 2015

Идентификатор DOI: 10.1016/j.rgg.2015.11.010

Ключевые слова: Estimation of the age of paleoearthquake, Paleoseismogenic dislocations, Trenching, age determination, dislocation, paleoseismicity, sedimentary basin, seismology, tectonics, uplift

Аннотация: In recent years, the Hustai, Gunji, and Kerulen paleoseismogenic structures have been discovered and examined within the Henteyn uplift. Their investigations revealed zones of probable earthquake foci, presenting a seismic hazard for Ulaanbaatar. We report the first data on the quantitative parameters of prehistoric earthquakes in Показать полностьюthe Meso-Cenozoic Upper Kerulen basin. The absolute age of two paleoevents determined by radiocarbon dating is within 1152-1702 BC and 5466-7201 BC. Seismogeological study of dislocations made it possible to estimate the type of tectonic stress during the formation of structures within the Henteyn uplift and to explain their nature. The horizontal-compression stress is mostly due to endogenous processes, which lead to the enlargement of the uplift area at the expense of the peripheral Mesozoic sedimentary basins. © 2015.

Журнал: Russian Geology and Geophysics

Выпуск журнала: Vol. 56, Is. 12

Номера страниц: 1780-1790

• Smekalin O.P. (Institute of the Earth's Crust, Siberian Branch of the Russian Academy of Sciences, ul. Lermontova 128, Irkutsk, Russian Federation)
• Chipizubov A.V. (Institute of the Earth's Crust, Siberian Branch of the Russian Academy of Sciences, ul. Lermontova 128, Irkutsk, Russian Federation)
• Imaev V.S. (Institute of the Earth's Crust, Siberian Branch of the Russian Academy of Sciences, ul. Lermontova 128, Irkutsk, Russian Federation, Technical Institute (Department) of Northeastern Federal State University, ul. Kravchenko 16, Neryungri, Russ)

• Scopus