The weight of overlying sediments compacts the clay and squeezes water out of the clay until equilibrium is reached with the pore pressure in the clay.
(The weight of overlying sediments compacts the clay; squeezes; water; out of the clay; T:until equilibrium is reached with the pore pressure in the clay) (equilibrium; is reached; )
The weight of overlying sediments compacts the clay equilibrium
squeezes is reached
water out of the clay T:until equilibrium is reached with the pore pressure in the clay