Lebanon granite assigned to Oliverian plutonic series. Age changed to Middle or Late Devonian(?). Consists of two mappable units: granite (a subporphyritic granulated biotite granite), and a border gneiss (varying from amphibolite to quartz monzonite).
Source: GNU records (USGS DDS-6; Reston GNULEX).
For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.
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