Lower Marble formation in the Northwest Adirondack Mountains subdivided into several informal members. Maple Ridge member, a calc-silicate layered gneiss at the top of the formation, may be in structural (tectonic slide) contact with the overlying Popple Hill Gneiss. Overlies a thin, unnamed quartz-diopside carbonate member.
Source: GNU records (USGS DDS-6; Reston GNULEX).
For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.
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