Геоморфологические признаки пластических разрывов литосферы

Аннотация

Geomorphological indications of plastic ruptures in lithosphere are discussed. The ruptures formation is supposed to proceed similar to the theoretical scheme «neck in two-dimensional band»; they determine the developm.ent of some oceanic and continental zones of riftogenesis. The identification of the plastic ruptures in lithosphere is suggested using geometric criterion: general strike of the morphostructures within the rupture zone forms the angle about 550 with the tension direction, and the angle between conjugate plastic ruptures is about 1 100. Some cases are discussed and geomorphological consequences are considered of certain deviation from the theoretical scheme of two-dimensional plastic deformation.