Sedimentary rock is formed from particles of sand, shells, pebbles, and other fragments of material—other fragments such as … Strathmore canvas paper, Stanislaus #12 brush, Winsor & Newton Phthalo Blue Red Shade, Liquitex heavy body Titanium White,
Paper Mate Sharp Writer #2,
Speedball brayer with blue and white,
Liquitex soft body Payne's Gray with homemade yogurt lid stencil, brayer with white,
plastic paint knife with blue, and white,
mesh drywall tape stencil and gray acrylic,
Caran D'ache Neocolor II Aquarelle Prussian Blue and Black wax pastel sticks,
brayer with blue and white together,
and Paper Mate black felt tip pen
Together, all these particles are called sediment. Gradually the sediment accumulates in layers and, over a long period of time, hardens into rock.
The layers above will do some hardening overnight.