Geophysical Journal | 2007 volume 29 1

The structure of the Earth's crust of transitional zone of the north-western part of the Black Sea according to geophysical data

© Kozlenko Yu.V., Solovyov V.D., Kozlenko M.V.

Results of analysis and interpretation of geophysical data for transitional zone of the north-western part of the Black Sea in the area of the Lomonosov submarine paleovolcanic massif (LSM) have been presented. Fault zone with a shift of about 10 km has been identified in the eastern part of LSM according to the results of gravity field analysis directed across the continental slope - SSW-NNE. Density modeling proved that active tectono-magmatic activity within the limits of LSM was displayed as a series of blocks variable by density and obviously of different composition and age. The results of gravity modeling testify that transitional zone between the continental structure of Scythian platform and West-Black Sea depression includes not only the continental slope but extends southward under near-slope deep-sea part of the Black Sea basin. The results of magnetic simulation showed that special features of magnetoactive bodies location allow to conclude that in the Paleogene - Upper Cretaceous the areas of present-day shelf of LSM area were situated higher than the sea level and were subjected to erosion and weathering.

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