pebbles collection and large white stone in stony beach environment

weathering erosion abrasion geology geologic natural resource rocky smoothed colorful teal rosy mauve green yellow citrine yellow gray grey erosion sea level wave action deposited deposition earth science petrology transported mineralogy minerals cobbles drainage permeable permeability porosity porous drainage washed sorted packed sorting packing gravel aggregate construction natural setting miniscule organized chaos chaotic disorganized daylight rockhound collection identification tumbled smoothed ovoid shaped elliptical triaxial ellipsoid geometry geometric shape mathematical mathematics affine transformation quadric surface spheroid set