Seismic Tomography Model for the Crust of Southern Crimea and Adjacent Northern Black Sea

摘要: This new seismic tomography study for the crust of southern Crimea and northeastern Black Sea based on low-magnitude (M ≤ 3) earthquakes indicates significant heterogeneity at depths 15–35 km. In present paper we discuss velocity distribution P- S-waves give geological tectonic interpretations in context collisional interaction between microplate Scythian plate. The joint use data both types waves (P- S-waves) increases reliability interpretation allows us to estimate crustal composition Mountainous (MC) subcrustal mantle Sea. We have detected high regions MC (Vp = 6.5‒6.8 km/s, Vs 3.7‒3.9 Vp/Vs 1.75‒1.9), which complex configurations can be deep sources mid-Mesozoic intrusions known (Ayu-Dag Castel). high-velocity area is separated from eastern by a linear nearly north–south low-velocity zone located cities Sudak Feodosiya. latter interpreted as weakened associated with Korsak–Feodosiya fault. region beneath (south Kerch Peninsula) 25–40 km most likely belongs (Vp/Vs 1.80–1.85) that underlies thin suboceanic East Basin. resulting model adjacent part consistent parameters other geophysical fields.