Large rounded pebbles of weathered basalt close to the base of Unit VI suggest a regolith formed by weathering of volcanic basement.
(Large rounded pebbles of weathered basalt close to the base of Unit VI; suggest; a regolith formed by weathering of volcanic basement) (a regolith; formed; by weathering of volcanic basement)
Large rounded pebbles of weathered basalt close to the base of Unit VI a regolith
suggest formed
a regolith formed by weathering of volcanic basement
by weathering of volcanic basement