Geologic Unit: Tsankawi

Usage:

Tsankawi Pumice Bed of Tshirege Member of Bandelier Tuff of Tewa Group (NM*)

Geologic age:

Quaternary (Pleistocene)*

Type section, locality, area and/or origin of name:

Type locality: in vicinity of Tsankawi Ruin on Pajarito Plateau, Espanola 15-min quadrangle, Los Alamos Co., north-central NM (Bailey and others, 1969).
Type area: along south side of Tsankawi Ruin mesa, in secs. 20 and 21, T. 19 N., R. 7 E., [Bandelier National Monument, White Rock 7.5-min quadrangle, Los Alamos Co.]; along Los Alamos truck route [East Jemez Road] in Sandia Canyon, in center of sec. 24, T. 19 N., R. 6 E., [Frijoles 7.5-min quadrangle, 1984 ed., Los Alamos Co.; and in roadcuts along NM Route 4 where it crosses Potrillo and Ancho Canyons, [Los Alamos National Laboratory area, White Rock and Frijoles 7.5-min quadrangles, Los Alamos Co.] (Bailey and others, 1969).

AAPG geologic province:

Estancia basin*
San Juan basin*
San Luis basin*