Intrusive volcanic phenomena in southern and central Arizona, in Titley, S.R., ed., Southern Arizona Guidebook III

Mineral District, Granitoid, Igneous Petrology, Volcanic, (Mount Lord Ignimbrite)Cat Mountain Tuff - Cretaceous, Recreation Red Beds - Jurassic(?) or Triassic(?) - Artesa sequence, (Tucson Mountain Chaos), Cat Mountain Tuff(Cat Mountain Rhyolite), [Silver Bell Fm][Silver Bell andesite][Silver Bell volcanics][Silver Bell welded tuff],