I.S.Chuvashova1,2, S.V. Rasskazov 1,2
1Irkutsk State University, Irkutsk, Russia
2Institute of the Earth's Crust SB RAS, Irkutsk, Russia
Chuvashova Irina Sergeevna,
candidate of geological and mineralogical sciences,
664003 Irkutsk, Lenin str., 3,
Irkutsk State University, Faculty of Geology,
Associate Professor of the Dynamic Geology chair,
664033 Irkutsk, Lermontov str., 128,
Institute of the Earth's Crust SB RAS,
Senior Researcher,
tel.: (3952) 51–16–59,
email: chuvashova@crust.irk.ru.
Rasskazov Sergei Vasilievich,
doctor of geological and mineralogical sciences, professor,
664003 Irkutsk, Lenin str., 3,
Irkutsk State University, Faculty of Geology,
Head of Dynamic Geology Chair,
664033 Irkutsk, Lermontov str., 128,
Institute of the Earth's Crust SB RAS,
Head of the Laboratory for Isotopic and Geochronological Studies
tel.: (3952) 51–16–59,
email: rassk@crust.irk.ru.
Abstract. From instrumental measurements in southeastern Mongolia and adjacent China, weak seismicity is determined. However, 7.5-kilometer long system of ditches, probably of seismic nature, was detected in the western part of the Dariganga volcanic field, on the edge of the Ashate Plateau that resulted from erosional dissection of the 4.8–4.3 Ma shield edifice. We propose that the modern seismotectonic reactivation of the Askhate volcano is related to tectonic motions in the Late Cenozoic Tamtsag foredeep of the Nukut-Daban range, spatially associated with neotectonic reactivation of the Solonker suture.
Keywords: Volcanism, Cenozoic, Asia, Mongolia, geodynamics, recent tectonics, present-day motions.
P. 60–74
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