Beneath the Ghawar Field, the basement is found about 7 km beneath the
surface. It is covered with sediments (3 km is carbonates and the other part is
clastics). Calculate the crustal
thickness by assuming Airy Isosticy method.
Support your answer with drawing.
Compensating depth is
Initial crustal thickness is
Clastics sediments density is
Carbonate sediment density is 2.80 gm/cm3
Crust density is
Repeat the above calculation using densities 2.5, 2.7, 3.0, and 3.2
respectively. Also assume the compensating depth and the initial crustal
thickness are 80 km. Compare between the two answers. What is your opinion of this comparison?
You have a piece of sandstone whose fractional porosity is 0.25 and whose
water-saturated velocity is 4000 m/s.
Calculate the sandstone velocity at zero porosity, its air-saturated
velocity, and its ice-saturated velocity.
of Air is