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REGIONAL ACTIVE FAULTS AS INTERPRETED ON CRUSTAL SEISMICITY, GRAVITY AND MAGNETIC DATA ACROSS THE MOESIAN PLATFORM AND THE NORTH DOBROGEAN OROGEN

Irina Stanciu

First published: 2018-06-20https://doi.org/10.5593/sgem2018/1.1/s05.117View metrics

Abstract

The tectonic interpretation of crustal seismicity data have been recently performed for the central part of the Moesian Platform, having as main target the in-depth development of the Intramoesian Fault[1]. Seismological data for Romania, Bulgaria and the western Black Sea, compiled from published local, regional and global earthquake catalogues and merged into a database, were used to analyze the crustal seismicity (0?40 km) on multiple N-S trending sections across the North Dobrogean Orogen and the eastern part of the Moesian Platform, within 45.5N - 43N latitude and 27E?30E longitude. The location of crustal faults, components of the geotectonic frame, was interpreted on regional gravity and aeromagnetic data. The N-S regional distribution of crustal seismicity illustrates the in-depth development of quasi-vertical clusters of hypocenters, interpreted as highly active fault segments, alternating with sectors of low seismicity. Among the Sfantu Gheorghe, Peceneaga-Camena, Capidava?Ovidiu and Intramoesian faults, the Peceneaga-Camena fault is best illustrated by crustal seismic events. When comparing the seismicity of the analyzed tectonic blocks, a decreasing seismicity was observed, starting from the North Dobrogean Orogen, as the most active; Central Dobrogea displays moderate seismicity, while Southern Dobrogea is characterized in the studied area by the lowest seismicity.

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Publication details

Title
REGIONAL ACTIVE FAULTS AS INTERPRETED ON CRUSTAL SEISMICITY, GRAVITY AND MAGNETIC DATA ACROSS THE MOESIAN PLATFORM AND THE NORTH DOBROGEAN OROGEN
Authors
Irina Stanciu
Proceedings
SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 18th International Multidisciplinary Scientific GeoConference SGEM2018, Science and Technologies in Geology, Exploration and Mining
Publisher
STEF92 Technology
Year
2018
Pages
939-946
SWS Citekey
Stanciu20185939946
ISSN
1314-2704
ISBN
978-619-7408-35-5
Language
en
Publication type
Conference Paper
Keywords
crustal seismicityregional active faultsgeophysical interpretationNorth Dobrogean OrogenMoesian Platform
References1

  1. Petya Trifonova; Dimcho Solakov; Stela Simeonova; Metodi Metodiev; Petar Stavrev (2013). Regional pattern of the earth's crust dislocations on the territory of Bulgaria inferred from gravity data and its recognition in the spatial distribution of seismicity. DOI: 10.5194/prp-1-25-2013

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