rocky outcrop on a sandy beach

rock rocky outcrop outcropping beach sand golden coast litoral erosion substrates paleobeach sedimentary rocks sediments deposition fossil fossilized siltstone aleurolite sandstone detritus weathering aptian albian cretaceous nature outdoors natural environment sustainability geology lithology layering fold synclinal eroded materials coastal bedding sea limestone liencres costa quebrada cantabria broken canallave valdearenas spain sandy dunes park