Geology hub
Metamorphic
How rocks change without melting: foliation, recrystallization, metamorphic grade, and what textures reveal about pressure and heat.
Subtopics
Marble
Metamorphosed limestone—why it reacts with acid, how it takes polish, and what it says about its parent rock.
Schist & gneiss
Foliation and banding—how minerals align and segregate under deformation.
Metamorphic grade
Low to high grade: how mineral assemblages change with temperature and pressure.
Foliation & fabric
Cleavage, schistosity, gneissic banding—what fabric tells you about stress and flow.