Answer: pore or fluid
Explanation: The pore or fluid pressure is the pressure of the fluid within the pores of a given rock. The pore pressure can result in a situation known as overpressure or high pore pressure when the pore pressure becomes higher than the hydrostatic pressure.
Sedimentary materials are particles which have been accumulating over a long time and have been cemented together through temperature and pressure etc.
Deltas, because volcanoes are a build up of composites, glaciers are from ice melting and leaving behind composites. Deltas are when composites are washed away until there is a whole or trench.
