Pg. 271, 288. Mount Holly conglomerate. On top of the hill at Mount Holly, Burlington County, southern New Jersey, is an identical conglomerate and gravel, composed of same materials as Bryn Mawr gravel in Pennsylvania. This conglomerate, which is named Mount Holly conglomerate, has the peculiar ferruginous glaze of Bryn Mawr gravel. It overlies Cretaceous marls and sands. From its abundance at Mount Holly, and in order to show its connection with the Pennsylvania deposits, we shall call the conglomerate of the Bryn Mawr gravel Mount Holly conglomerate. Age is Pliocene(?).
Source: US geologic names lexicon (USGS Bull. 896, p. 1435).
For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.
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