“…Applicable to rift zones and more rarely to marginal seas or the Mediterranean, this concept was presented by BELOUSOV (1978), GRACHOV (1977), LEVIN (1979), MILANOVSKY (1976, KROPOTKIN and SHAKHVARSTOVA (1965), HAIN (1973), and others. The mechanism of forming mantle diapirs was considered by BELOUSOV (1975) and is not discussed here.…”