- Clastic rocks are composed of fragments, or clasts, of pre-existing minerals and rock. A clast is a fragment of geological detritus, chunks, and smaller grains of rock broken off other rocks by physical weathering. Geologists use the term clastic to refer to sedimentary rocks and particles in sediment transport, whether in suspension or as bed load, and in sediment deposits.
Art will remain the most astonishing activity of mankind born out of struggle between wisdom and madness, between dream and reality in our mind.
Magdalena Abakanowicz