Close up of gabbro boulder associated with the Farmington Gabbro. Photograph taken at the Davie County rest area on west bound I-40
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According to Goldsmith et al. (1988), rocks are part of the DScgb unit: Gabbro of Concord plutonic suite (Devonian and Silurian) – Gabbro, norite, gabbronorite, and hornblende gabbro. Major minerals are plagioclase, both clinopyroxene and orthopyroxene, and hornblende, biotite, and olivine or quartz.
Formation or Unit: Gabbro of the Concord plutonic suite
Association: Example of intrusive rocks within Charlotte terrane
Terrane: Charlotte terrane |