Qal
Alluvium (Holocene)
Qf
Alluvial fan (Holocene)
Ql
Landslide deposits (Holocene and Pleistocene)
Tsc
Santa Fe Group, conglomeratic facies (Pliocene and Miocene)
Tbs
Servilleta Basalt (Pliocene)
Qfo
Older alluvial fan (Pleistocene)
Tb
Silicic-alkalic basalt and basaltic andesite (Miocene)
Qc
Colluvium (Holocene)
Unmapped
Unmapped area
Xu
Supracrustal and plutonic rocks (Early Proterozoic)
Tsv
Santa Fe Group, volcaniclastic facies (Pliocene and Miocene)
Trt
Amalia Tuff, main unit (Oligocene)
Ts
Santa Fe Group, fine-grained facies (Pliocene and Miocene)
Tac
Andesitic sedimentary rocks (Oligocene)
Twt
Treasure Mountain(?) Tuff (Oligocene)
Xqct
Quartz monzonite of Costilla Creek (Early Proterozoic)
Tbb
Basanitic basalt (Miocene)
Xfg
Felsic gneiss (Early Proterozoic)
Tps
Shale, sandstone, and conglomerate (Lower Oligocene or Eocene)
Tah
Hornblende andesite and dacite (Oligocene)
Trg
Rhyolite of Gonzales Ranch (Miocene)
Tqc
Latir Peak Quartz Latite, volcaniclastic rocks (Oligocene)
Tps?
Shale, sandstone, and conglomerate, uncertain (Lower Oligocene or Eocene)
Xqs
Muscovite-quartz schist and gneiss (Early Proterozoic)
Xa
Amphibolite (Early Proterozoic)
Tvs
Volcanic sedimentary rocks (Oligocene)
Tab
Basalitc andesite (Oligocene)
Xq
Quartzite (Early Proterozoic)
Tbs Slump
Taf
Alkali andesite and dacite (Oligocene)
Tax
Xenocrystic andesite and dacite (Oligocene)
Xp
Pegmatite (Early Proterozoic)
Xfa
Mixed unit of felsic gneiss (Xfg) and amphibolite (Xa) interlayered in subequal proportions (Early Proterozoic)
Tb3
Silicic-alkalic basalt and basaltic andesite, lava flow unit 3 (Miocene)
Tb4
Silicic-alkalic basalt and basaltic andesite, lava flow unit 4 (Miocene)
Tt
Tuff of Tetilla Peak (Oligocene)
Tb2
Silicic-alkalic basalt and basaltic andesite, lava flow unit 2 (Miocene)
Tb1
Silicic-alkalic basalt and basaltic andesite, lava flow unit 1 (Miocene)
Tap
Pyroxene andesite (Oligocene)
w
Open water
Tbm
Basaltic mixed lavas (Miocene)
Ta
Andesitic lava flows, undivided (Oligocene)
Tr
Rhyolitic lava flows (Oligocene)
Tai
Andesite (Miocene and Oligocene)
Qm
Moraine and till  (Pleistocene)
Tbx
Xenocrystic basaltic andesite (Miocene)
Trtl
Amalia Tuff, lithic-rich lower facies (Oligocene)
Tqi
Quartz latite (Miocene and Oligocene)
Trc
Rhyolite of Cordova Creek (Oligocene)
g
Gabbro (Early Paleozoic or late Proterozoic?)
Xmi
Mafic and ultramafic rocks (Early Proterozoic)
Xms
Biotite-muscovite schist and gneiss (Early Proterozoic)
Tri
Rhyolite (Miocene and Oligocene)
Tq
Latir Peak Quartz Latite, lava flows and domes (Oligocene)
Tapi
Porphyritic andesite and some dacite (Miocene and Oligocene)
Tsv?
Santa Fe Group, volcaniclastic facies, uncertain (Pliocene and Miocene)
Tc
Comendite of Ortiz Peak (Oligocene)
Qmo
Older moraine(?) (Pleistocene)
Xgd
Granodiorite of Jaracito Canyon (Early Proterozoic)
Trpp
Peralkaline rhyolite (Miocene and Oligocene)
Xfa shear
Mixed unit of felsic gneiss (Xfg) and amphibolite (Xa interlayered in subequal proportions, shear zone
Pz
Sangre de Cristo Formation, Magdalena Group, Terrerro Formation, and Espiritu Santo Formation (Paleozoic)
Xgd shear
Xvf
Felsic metavolcanic rocks (Early Proterozoic)
Qm?
Moraine and till, uncertain (Pliestocene)
Qt
Talus (Holocene)
Ts?
Santa Fe Group, fine-grained facies, uncertain (Piocene and Miocene)
Tg
Older biotite granite (Oligocene)
Qr
Rock glacier (Holocene)
Tp
Granitic pegmatite (Oligocene)
Tgp
Granite porphyry (Oligocene)
Trp
Porphyritic rhyolite (Miocene and Oligocene)
Xqct brecc
Quartz monzonite of Columbine Creek, brecciated area (Early Proterozoic)
Trtl?
Amalia Tuff, lithic-rich lower facies, uncertain (Oligocene)
Tm
Monzonite (Oligocene)
Td
Dacites of Gualaloupe Mountain and Cerro Negro (Pliocene)
Tqk
Potassium-feldspar quartz latite (Miocene and Oligocene)
Trpx
Coarsely porphyritic rhyolite (Miocene and Oligocene)
Xqo
Quartz monzonite of Old Mike Peak (Early Proterozoic)
Tgy
Younger granite and aplite (Miocene)
tp
Tailings ponds (Holocene)
ds
Mine dumps (Holocene)
Xbg
Biotite gneiss (Early Proterozoic)
Xqc
Quartz monzonite of Columbine Creek (Early Proterozoic)
Xvm
Mafic metavolcanic rocks (Early Proterozoic)
Xcg
Metaconglomerate (Early Proterozoic)
Tgd
Granodiorite and granite (Oligocene)
Xc
Chert (Early Proterozoic)
Trr
Rhyolite of Relica Peak (Miocene and Oligocene)
Xlg
Layered gneiss (Early Proterozoic)
Xi
Iron-formation (Early Proterozoic)
Xph
Phyllite (Early Proterozoic)
Xg
Greenstone (Early Proterozoic)
Xqo shear
Quartz monzonite of Old Mike Peak, shear zone (Early Proterozoic)
Xqc shear
Quartz monzonite of Columbine Creek, shear zone (Early Proterozoic)
Xtr
Tonalite of Red River (Early Proterozoic)
Xtr shear
Tonalite of Red River, shear zone (Early Proterozoic)
Xlg shear
Layered gneiss, shear zone (Early Proterozoic)
Xa shear
Amphibolite, shear zone (Early Proterozoic)