Glaciers moved out of the north, skimming the surface and pushing together a giant pile of boulders, cobbles, pebbles, sand, silt and clay.
(Glaciers; moved; out of the north) (Glaciers; skimming; the surface) (Glaciers; pushing; together; a giant pile of boulders, cobbles, pebbles, sand, silt and clay)
Glaciers Glaciers Glaciers
moved skimming pushing
out of the north
the surface
together a giant pile of boulders, cobbles, pebbles, sand, silt and clay