Pg. 52, 53, 54. Battleship Rock welded tuff flow. Rhyolite welded tuff and breccia. A post-Bandelier rhyolite. Banco Bonito flow (new) fills canyons cut in Battleship Rock welded tuff. Age is Pleistocene.
Named from Battleship Rock, [Lat. 35 deg. 49 min. 42 sec. N., Long. 106 deg. 38 min. 32 sec. W., bdry. btw. sec. 32, T. 19 N., R. 3 E., and sec. 5, T. 18 N., R. 3 E., Jemez Springs 7.5-min quadrangle, Sandoval Co.], Jemez Mountains, north-central NM. Rhyolite poured down San Diego Canyon from EI Cajete center to the northeast near southern base of Redondo Mountain. [Additional locality information from USGS GNIS database, USGS historical topographic map collection TopoView; accessed December 9, 2012.]
Source: US geologic names lexicon (USGS Bull. 1350, p. 49).
Pg. P17. Battleship Rock Member of Valles Rhyolite of Tewa Group is adopted by the USGS. Is a sequence of local rhyolitic ash-flow deposits. Thickness 400 feet near Battleship Rock. Rests unconformably on the Permian red beds of Abo Formation or the Pennsylvanian limestones of Magdalena Group. Disconformably underlies Banco Bonito Member of Valles Rhyolite. Source unknown; possibly issued from vent in vicinity of El Cajete, north-central New Mexico. Age is Pleistocene, based on stratigraphic relations.
Type section: Battleship Rock, in sec. 5, T. 18 N., R. 3 E., Jemez Springs 7.5-min quadrangle, Sandoval Co., north-central NM. Crops out at head of Canon de San Diego.
Source: Publication; Changes in stratigraphic nomenclature, 1969 (USGS Bull. 1324-A, p. A2).
For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.
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