Geology

1. Chapter two Isostasy
Isostasy is vertical movement of crust to attain its buoyancy in the mantle.
There are 2 hypothesis:
1. PRATT ISOSASTY: Mountain range supported by density variationswithin
the crust.
2. AIRY ISOSTASY: Mountain range supported by changes in crustal
thickness; crustal density relatively constant.
Either way, the plate is relatively light and 'floats' on a fluid layer beneath.

2. Layered floating blocks and gravity
1. Why do only oceans get subducted?

5. Free-air/Bouguer/Airy-isostatic gravity with and without compensation

6. Gravity deficient and the Himalaya’s

7. OCEANIC ISOSTASY