TERTIARY (continued)

-     Silicic to intermediate volcanic rocks; mainly quartz latite and 
         rhyolite Neogene; may locally include flows interbedded with 
         Santa Fe Group
-     Neogene volcanic rocks; primarily in Jemez Mountains 
-     Chuska Sandstone; restricted to Chuska Mountains 
-     Middle Tertiary volcanic rocks, undifferentiated
-     Middle Tertiary felsic shallow-intrusive rocks; phonolites and 
         trachytes of northeastern N.M.; includes the rhyolite of Ash Mountain 
-     Volcanic and some volcaniclastic rocks, undifferentiated; lower 
         Miocene and Upper Oligocene (younger than 29 Ma)
-     Lower Oligocene and Eocene volcanic rocks, undifferentiated; 
         dominantly intermediate composition, with interbedded volcaniclastic 
         rocks; (31-44 Ma)
-     Lower Miocene and uppermost Oligocene basaltic andesites (22-26 Ma).
         Includes Bearwallow Mountain Andesite and basaltic andesite of Mangas
         Mountain
-     Upper Oligocene andesites and basaltic andesites (26-29 Ma); includes
         La Jara Peak Basaltic Andesite, Uvas Basalt, the basaltic andesite of 
         Poverty Creek, and Squirrel Springs Andesite, the Razorback, Bear 
         Springs Canyon, Salt Creek, Gila Flat, and Middle Mountain Formations, 
         and the Alum Mountain Group; locally includes more silicic flows 
-     Upper Oligocene rhyolitic pyroclastic rocks (ash-flow tuffs); includes 
         Davis Canyon Tuff, South Crosby Peak Formation, La Jencia, Vick's Peak, 
         Lemitar, South Canyon, Bloodgood Canyon, Shelley Peak Tuffs, tuff of 
         Horseshoe Canyon, Park Tuff, Rhyolite Canyon Tuff, Apache Springs Tuff, 
         Diamond Creek, Jordan Canyon, Garcia Camp Tuffs, the Turkey Springs 
         Tuff, the tuff of Little Mineral Creek, the Amalia Tuff, and others. 
         Some contain volcaniclastic and reworked volcaniclastic rocks, and 
         eolian sandstone; (24-29 Ma)
-     Lower Oligocene silicic pyroclastic rocks (ash-flow tuffs); includes 
         Hell's Mesa, Kneeling Nun, lower part of Bell Top Formation, Caballo 
         Blanco, Datil Well, Leyba Well, Rock House Canyon, Blue Canyon, Sugarlump 
         and Tadpole Ridge Tuffs, the tuffs of the Organ cauldron, Treasure 
         Mountain Tuff (now known as Chiquito Peak Tuff), Bluff Creek Tuff, Oak 
         Creek Tuff, tuff of Steins Mountain, tuff of Black Bill Canyon, tuff of Farr 
         Ranch, Woodhaul Canyon, Gillespie and Box Canyon Tuffs, Cooney Tuff, and 
         other volcanic and interbedded fluvial and pumiceous units; (31-36.5 Ma)
-     Upper Oligocene silicic (or felsic) flows and masses and associated 
         pyroclastic rocks; includes Taylor Creek, Fanney, and Rocky Canyon 
         Rhyolites 
-     Lower Oligocene silicic (or felsic) flows, domes, and associated 
         pyroclastic rocks and intrusions; includes Mimbres Peak Formation
-     Tertiary intrusive rocks; undifferentiated
-     Miocene to Oligocene silicic to intermediate intrusive rocks; dikes, 
         stocks, plugs, and diatremes 
-     Upper and Middle Tertiary mafic intrusive rocks
-     Quartz monzonites (Eocene) in the Silver City and Los Pinos Range, 
         intermediate intrusives of the Cooke's Range (Oligocene), and other 
         intermediate to felsic dikes and plugs of Oligocene and Eocene age
-     Lower Tertiary, (Lower Oligocene and Eocene) andesite and basaltic 
         andesite flows, and associated volcaniclastic units.  Includes Rubio 
         Peak Formation, and andesite of Dry Leggett Canyon
-     Paleogene sedimentary units; includes Baca, Galisteo, El Rito, Blanco 
         Basin, Love Ranch, Lobo, Sanders Canyon, Skunk Ranch, Timberlake, and 
         Cub Mountain Formations
-     San Jose Formation; Eocene, San Juan Basin
-     Nacimiento Formation; Paleocene, San Juan Basin
-     Ojo Alamo Formation; Paleocene, San Juan Basin
-     Poison Canyon Formation; Paleocene, Raton Basin
 
                   TERTIARY and CRETACEOUS

-     Raton Formation; in Raton Basin; unit contains conformable K/T boundary
-     Poison Canyon and Raton Formations; undivided 
-     Animas Formation; in northeast San Juan Basin 
-     Andesitic volcanics    
-     Paleogene and Upper Cretaceous intrusive rocks; includes Hanover, Fierro, 
         Tyrone, and Lordsburg granodiorite-quartz monzonite porphyries