Pg. 21-22 (table 2), 32-35. Conanicut Group. Metasedimentary sequence of dark phyllites and salmon-colored siltstones exposed in the Esmond-Dedham subterrane (Avalon terrane), on Conanicut Island, southern Narragansett Bay, southeastern Rhode Island. Divided into (descending): Dutch Island Harbor Formation, 100 m thick; Fort Burnside Formation, 30 m thick; and Jamestown Formation, 200 m thick. Lies above Pirate Cave Formation. The basal Jamestown may be equivalent to the East Passage Formation of the northwestern shores of Newport Neck. [East Passage Formation later included in Conanicut Group; see geologic map of Rhode Island (Hermes and others, 1994).] Fossils (trilobites, acritarchs). Age is considered Middle Cambrian(?) to Early Ordovician(?), based on fossils.
Named from the exposures in seacliffs on Conanicut Island, southern Narragansett Bay, southeastern RI.

Source: Publication.