The Lady Slipper Granulite Gneiss, here named, is a sequence of metavolcanic rocks in the Pedlar massif in the western parts of the Buena Vista and Cornwall quadrangles, VA. It consists of light-gray, medium-grained layered to massive gneiss with quartz, plagioclase, hypersthene, garnet, and biotite. Intruded by the Pedlar River Charnockite Suite. Age is Middle Proterozoic, based on a concordia intercept age of 1130 Ma.
Source: GNU records (USGS DDS-6; Reston GNULEX).
Used as Lady Slipper Gneiss in table 6. Isotopic ages include 207Pb/206Pb age of 1069 Ma (Sinha and Bartholomew, 1984) and a U-Pb zircon upper intercept age of 1111 Ma (calculated by T.W. Stern from existing data).
Source: GNU records (USGS DDS-6; Reston GNULEX).
For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.
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