Avalonian Orogeny  search
BTChronostratigraphic Units
 .Precambrian
 ..Avalonian Orogeny
UFAvalonian Orogenic Phase
RTorogeny
 North America
 Avalon Zone
SNUsed in connection with orogenic event near the end of Precambrian time along E border of North America. Named for the Avalon Peninsula in SE Newfoundland. Before 1978, search Avalonian AND orogeny.