Detail of Crushed Seashell Fragments and Beach Gravel

macro overhead view of a dense layer of tiny crushed seashell fragments, coarse sand and small pebbles completely filling the frame, natural beach gravel texture, irregular granular surface, thousands of varied chips and specks, off-white shell pieces mixed with tan, beige, brown, ochre and charcoal grains, dry rough mineral texture, highly detailed photorealistic texture study, flat top-down composition, no horizon, no objects, even natural daylight, sharp focus across entire image, realistic micro shadows between grains