Holocenic Geological and Seismic Activity of the Fault System in Northeastern Bulgaria by the Complex of Geological-Geomorphological and Archeoseismological Methodsстатья
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Дата последнего поиска статьи во внешних источниках: 28 февраля 2020 г.
Аннотация:The structure of the fault system of northeastern Bulgaria and, in particular, of the Intramoesianfault, is examined in order to assess their current activity. The Intramoesian fault and its branch disjunctiveshave not been sufficiently studied from the geological-geomorphological and seismological points ofview. The authors conduct a complex of geophysical investigations and obtain an idea of their deep structure.The system of these faults is a key element in solving the problem of assessing the seismic hazard ofthe region, since recent studies of this territory indicate the existence of traces of relatively young seismotectonicprocesses. There is also an opinion that the zone of the two Intramoesian faults disturbs the easternpart of the tectonic plate, which is subducted under the Carpathian fold system in the region of theVrancea Mountains. The results of the field study of the southeastern Bulgarian part of these fault systemsby a complex of geological-geomorphological, paleoseismological, and archeoseismological methods arepresented. The zone of the Intramoesian fault is structurally segmented and the features of its intersectionwith the disjunctives of another structural orientation are revealed based on this. The data that determinethe degree of its geological and seismic activity are discussed.