We generalise an extension theorem for terraces for abelian groups to apply to nonabelian groups with a central subgroup isomorphic to the Klein 4-group V . We also give terraces for three of the non-abelian groups of order a multiple of 8 that have a cyclic subgroup of index 2 that may be used in the extension theorem. These results imply the existence of terraces for many groups that were not...

We present a phase field model for the evolution of stepped surfaces with distinct material parameters across nanoscale terraces in surface diffusion. The model aims to capture the Burton-CabreraFrank (BCF)-type theory for the motion of decorated non-interacting steps separating composite terraces. Our work forms an extension of the phase field model by Hu et al. [Physica D 241, 77 (2012)]. The...

Sakarya River, which is the largest river in northwest Anatolia, drains waters from a large area known as Middle Plateau. The most striking geomorphological features of and its tributaries this area, are joining gorges connect basins terrace systems together. This study aims to reveal morphometric sedimentological between Inhisar, Gemiciköy settlements. has settled region Upper Pliocene, formed...

Geomorphological research in the Fann Mountains of Pamir-Alay has indicated that subnival processes are occurring. Contemporary sediments indicate complex relationships occur between snow patches, waters, and ground. Underneath a semi-permanent patch, melts slowly from direction ground, resulting hollow is filled with produced by wash-down river terraces. The energy waters washes away displaces...