Inversion is turning the sole of the foot or ankle medially, and eversion is turning it laterally.
Metamorphic rock. Metamorphic rocks arise from the transformation of existing rock types, in a process called metamorphism, which means change in form. The original rock is subjected to heat and pressure, causing profound physical and/or chemical change.The protolith may be sedimentary rock, igneous rock or another older metamorphic rock.he original rock is subjected to heat and pressure, causing profound physical and/or chemical change. The protolith may be sedimentary rock, igneous rock or another older metamorphic rock.
Â· just now. Report Abuse. Metamorphic rocks are rocks that have undergone metamorphism, or change in form.. What this means is that a pre-existing rock type, the protolith, is exposed to heat greater than 150 C. The protolith can be igneous or sedimentary rock, or just some older metamorhpic rock.eport Abuse. Metamorphic rock is the result of the transformation of a pre-existing rock type, the protolith, in a process called metamorphism, which means change in form.