Ingul megablock density the Earth’s crust Bezier curves Black Sea megadepression Black Sea region Earth’s crust Lag- range polynomial Scythian plate automation of geological-geophysical maps input into PC crystalline crust density sections diorite dioritic and basaltoid types of consolidated crust fault zones granite granitic granitic-diorite sedimentary cover sedimentary layers structures with an abnormally high density on the surface of the basement suture zone tectonic structures the Golovanevsk suture zone three-dimensional gravity modeling types of the consolidated crust «basalt» layers «diorite» «granite» рluto