close up wrinkly hand pointing to striped and curvy rock pattern

abstract anatexis art artistic banding bands bedrock black boulder building climbing close cobble cobblestone constructed construction contrasting crystalline curves curvy decorative depth design diagenesis earth eutaxitic extreme feldspar feldspathic felsic folded folding folds foliation formation geologic geology geoscience gneiss gray greenland highly leucosome lyell mafic melanosome melting metamorphic metamorphosed mineral natural nature neosome orange partial pattern patterns penultimate pressure process recrystallization recrystallized rocky schist science sinuous squeezed stone striped stripes textural texture tiger tight umber unique veins vine wall white