IPA: /ˌaɪsəˈstætɪkli/
KK: /aɪˈsɑːstəˌtɪkli/
In a way that relates to isostasy, which is the equilibrium of the Earth's crust floating on the denser, underlying mantle.
The geological features were formed isostatically, showing the balance of forces in the Earth's crust.
Isostatically → It is formed from "iso-" (from Greek "isos", meaning equal) and "static" (from Greek "statikos", meaning causing to stand or stable). The term refers to a state of equal pressure or balance in a system, particularly in geology and physics.
Think of 'equal' ('iso-') and 'stable' ('static') to remember that isostatically refers to a state of balance or equilibrium.