1. Map showing potassium-argon ages from the Mount Katmai and adjacent parts of the Naknek and Afognak quadrangles, Alaska Peninsula, Alaska Author/Creator: Geological Survey (U.S.) Publication/Creation: Fairbanks, AK : For sale by Alaska Distribution Section Resource Type: Map Access & Availability: Loading
2. Map showing the relationship of selected mafic and ultramafic bodies in the crust of the eastern United States to seismically active areas Author/Creator: Geological Survey (U.S.) Publication/Creation: Reston, Va. : U.S. Geological Survey, 1991 Resource Type: Map Access & Availability: Loading
3. Mineral resource assessment of mafic and ultramafic rocks in the Greenville 1° x 2° quadrangle, South Carolina, Georgia, and North Carolina Author/Creator: Geological Survey (U.S.) Publication/Creation: Denver, CO : For sale by Map Distribution Resource Type: Map Access & Availability: Loading