TY - RPRT TI - K-Ar and fission-track zircon ages of Cerro Toledo rhyolite tephra units in the Jemez Mountains, north-central New Mexico AU - Glen Arthur Izett AU - J. D. Obradovich AU - C. W. Naeser AU - G. T. Cebula PY - 1978 DO - 10.3133/ofr78931 UR - https://pubs.usgs.gov/publication/ofr78931 ID - ofr78931 ER -