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Geologic formation in Rhode Island From Wikipedia, the free encyclopedia
Dating to the Carboniferous period, the Purgatory Conglomerate is a geologic formation in Rhode Island.[1][2][3][4][5][6]
This article relies largely or entirely on a single source. (March 2021) |
Purgatory Conglomerate | |
---|---|
Stratigraphic range: Carboniferous (Pennsylvanian) | |
Type | Formation |
Unit of | Narragansett Bay Group Informal: Rhode Island Group (RI)[1] |
Lithology | |
Primary | "near metamorphic" conglomerate |
Location | |
Region | New England (Rhode Island)[1] |
Country | United States |
Type section | |
Named for | Purgatory, Middletown, Newport, RI |
Purgatory Chasm, at the intersection of Tuckerman Avenue and Purgatory Road in Middletown (often mis-identified as being in Newport), is a narrow cleft on the east side of Easton Point which splits the Purgatory Conglomerate in a dramatic fashion.[7][8] The chasm is 120 feet long, 10 feet wide at the top, and over 150 feet deep.[9]
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