Feuerbach, D.L., Smith, E.I., Shafiqullah, Muhammed, and Damon, P.E., 1991, New K-Ar dates for late Miocene to early Pliocene mafic volcanic rocks in the Lake Mead area, Nevada and Arizona: Isochron/West, no. 57, p. 17-20.
Isochron/West, no. 57, p. 17-20.
Volcanic, Geochronology, Muddy Creek Fm - sedimentary rocks of the Grand Wash Trough and Mesquite Basin - Pleistocene and Miocene, [Fortification Basalt Mbr][Fortification Hill basalt][basalt of Fortification Hill], basalt of Callville Mesa - Miocene,