Abstract:

Based on field measurements and experimental analyses of underwater shrinkage cracks, we discuss formation processes of the cracks, sedimentary models of their filling, factors that influence them. and propose theoretical models. There are four steps that lead to the formation of cracks: (1) the primary muddy state of underwater sediments in low-lying areas; (2) sedimentary compacting processes; (3) the forming of shrinkage cracks after falling water levels and increasing salinity; (4) the filling of cracks...

Key words:

underwater shrinkage crack, filling, geological model, abnormal pressure, biological layer,