The Cuckold Formation is a stratigraphic unit of the Ediacaran Signal Hill Group, cropping out on eastern Newfoundland; it comprises red pebble to cobble conglomerate (geology), conglomerates and sandstones.
References
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Ediacaran Newfoundland and Labrador
Geologic formations of Newfoundland and Labrador
Conglomerate formations of Canada
Sandstone formations of Canada