solifluction
/ˌsɒlɪˈflʌkʃən/noun
mass noun
- Geology the gradual movement of wet soil or other material down a slope, especially where frozen subsoil acts as a barrier to the percolation of water【地质】泥流。
词源
early 20th cent.: from Latin solum 'soil'+fluctio（n-） 'flowing'， from the verb fluere.