DBPapers
DOI: 10.5593/sgem2012/s14.v3008

SEISMICITY AND MUD VOLCANISM: BLACK SEA, BULGARIA

A. VASILEV, E. KOZHUHAROV
Wednesday 1 August 2012 by Libadmin2012

References: 12th International Multidisciplinary Scientific GeoConference, www.sgem.org, SGEM2012 Conference Proceedings/ ISSN 1314-2704, June 17-23, 2012, Vol. 3, 987 - 992 pp

ABSTRACT

Sediment samples from the Bulgarian Exclusive Economic Zone (BEEZ) of the Black
Sea rarely show indirect evidences for mud volcanoes existence – mud breccia. The
analysis of seismicity in the area and studied mud volcanoes in the Black Sea allows the
formulation of important hypotheses for a future study:
• The Black Sea mud volcanoes are at older stage of their evolution – they are not
erupted during the last century but their necks are still main pathways for deep
strata degasation. The eruption process is too slow – let name it “snail eruption”,
and thus is invisible for onshore seismic stations.
• Hypothetical mud volcanoes in the area of Bulgarian offshore obey to the same
general rule of distribution according seismicity as known in the Black Sea (30
objects), as well as some other rules, determined by the sedimentation rate.

Keywords: mud volcanoes, “snail” eruption, seismicity, Black Sea, Bulgaria