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.
Metamorphic and sedimentary rocks are two of the three classifications of rocks found on the earth, the third being extrusive igneous rocks. The word metamorphic is derived from the Greek roots meta, meaning change, and morphe, meaning shape..Thus metamorphic rocks are those that have changed their shape.etamorphic and sedimentary rocks are two of the three classifications of rocks found on the earth, the third being extrusive igneous rocks. The word metamorphic is derived from the Greek roots meta, meaning change, and morphe, meaning shape..