The Great Duck Island Formation is interpreted to correlate with thick-bedded, purple quartz-pebble conglomerate
exposed at The Dock in Long Island Bay on Grand Manan Island (Fyffe and Grant 2003).
The new staking extends the known strike length of the sulphide-bearing quartzite and quartz-pebble conglomerate
on the Hearne property to approximately 11 kilometres.
For example, in areas underlain by the Meguma Supergroup, basal conglomerate of the Horton Group is composed primarily of quartz-pebble conglomerate
derived from quartz veins that are ubiquitous in metasedimentary strata, whereas in areas flanked by granitic basement the basal conglomerate is typically arkosic granite-pebble conglomerate.