found: Work cat.: Kurz, K.R. Emplacement and compositional variations of the dikes at Sinker Butte Volcano, western Snake River Plain, Idaho, 2007:leaf 6 (located in the center of the western Snake River Plain; lies on the eastern edge of Owyhee County)
found: GNIS, Feb. 1, 2008(Sinker Butte; summit; Owyhee County)
found: Tectonic and magmatic evolution of the Snake River Plain volcanic province, 2002:p. 421 (type IIB volcano, Sinker Butte; largest tuff cone in the western Snake River Plain)
notfound: Columbia gazetteer of the world, c1998;Merriam-Webster's geographical dictionary, c1997;Boone, L.P. Idaho place names, c1988;Lentz, H.M. The volcano registry, c1999;Simkin, T. Volcanoes of the world, 1994;Volcanoes of North America, 1990
