Czuba, Wojciech

Dannowski, Anke

Flueh, E. R.

Grad, Marek

Gryn, Dmytro

Guterch, Aleksander

Janik, Tomasz

Kolomiyets, Katerina

Legostaeva, Olga

Lysynchuk, Dmytro

Omelchenko, Victor

Starostenko, Vitaly

Stephenson, Randell

Sydorenko, Grigoriy

Thybo, Hans

Tolkunov, Anatoliy

Środa, Piotr

English

OceanRep

Geophysical Research AbstractsVol. 15, EGU2013-7728, 2013EGU General Assembly 2013© Author(s) 2013. CC Attribution 3.0 License.Velocity model of the crust and upper mantle at the southern margin ofthe East European Craton (Azov Sea-Crimea-Black Sea area), DOBRE-2& DOBRE’99 transectVitaly Starostenko (1), Tomasz Janik (2), Randell Stephenson (3), Dmytro Gryn (1), Anatoliy Tolkunov (4),Wojciech Czuba (2), Piotr S´roda (2), Grigoriy Sydorenko (4), Dmytro Lysynchuk (1), Victor Omelchenko (1),Marek Grad (5), Aleksander Guterch (2), Katerina Kolomiyets (1), Hans Thybo (6), Anke Dannowski (7), ErnstR. Flu˝h (7), and Olga Legostaeva (1)(1) Institute of Geophysics, National Academy of Sciences of Ukraine, Kiev, Ukraine, (2) Institute of Geophysics, PolishAcademy of Sciences, Warsaw, Poland, (3) School of Geosciences, King’s College, University of Aberdeen, (4) StateGeophysical Enterprise “Ukrgeofizika”, Kiev, Ukraine, (5) Institute of Geophysics, University of Warsaw, Poland, (6)Department of Geography and Geology, University of Copenhagen, Denmark, (7) IFM-Geomar, University of Kiel, GermanyThe southern part of the eastern European continental landmass consists mainly of a thick platform of Vendianand younger sediments overlying Precambrian basement, part of the East European Craton (EEC). The ScythianPlatform (SP) lies between the EEC and the (mainly Alpine) deformed belt running from Dobrudja (Romania) toCrimea (Ukraine) and the Greater Caucasus (Russia), along the northern margin of the Black Sea. Hard constraintson the Palaeozoic history on the SP are very sparse and little is known of its crustal structure in this area. The posterpresents the seismic results of a multidisciplinary project that fills some of this gap. The project is called DOBRE-2 (as it forms a prolongation of the successful DOBRE project executed in 1999-2001). The main objectivesof DOBRE-2 were to elucidate the deep-seated structure of the lithosphere and geodynamic setting of the shelfzones of the Azov and Black seas and the Crimean peninsula and to study the deep controls on the structure ofbasement and sedimentary cover. DOBRE-2 traverses a number of major faults and suture zones separating theEEC from the SP, the Crimean Mountains, and the Black Sea depression. Significant hydrocarbon reserves occurin the basins traversed by DOBRE-2. Deep seismic reflection profiling (30 second, Vibroseis) has been completedon a 100-km segment of the profile on the Azov massif (part of the Ukrainian Shield) as well as a 47-km segmentin Crimea. These are complemented by refraction profiling on the shelf zones of the Azov (∼53 km) and Black(∼160 km) seas and coincident near-vertical (CDP) in the Black Sea, using a combination of onshore seismographstations, ocean-bottom seismometers, onshore explosive energy sources (6 shot points), as well as ship-borneseismic acquisition. We present a 2-D seismic velocity model (Vp in the crust, depth to the Moho and depth tothe intracrustal reflectors) along (∼780 km) the DOBRE-2 & DOBRE’99 transect. Our model extends the modelpublished for the DOBRE’99 profile (The DOBREfraction’99 Working Group, 2003) to the southwest. The Mohodips in this direction, from a depth of 40 km below the Azov Sea to ∼47 km, below Crimea. A short segment of areflector interpreted to represent Moho was detected at a depth of ∼37 km in the Black Sea part of the profile. Wealso present a comparison of the DOBRE-2 velocity model with an interpretation of a coincident CDP profile.

Velocity model of the crust and upper mantle at the southern margin of the East European Craton (Azov Sea-Crimea-Black Sea area), DOBRE-2 & DOBRE'99 transect

Velocity model of the crust and upper mantle at the southern margin of the East European Craton (Azov Sea-Crimea-Black Sea area), DOBRE-2 & DOBRE'99 transect

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