| water |
| Pzs - Sedimentary rocks |
| Qf - Falls River Basalt |
| Qgc- Basalt of Geode Creek |
| Qge - Gerrit Basalt |
| Qh - Hot-spring deposits |
| Qhe- Hydrothermal-explosion deposits |
| Qhi - Cemented ice |
| Qiw- Warm River Butte dome |
| Qlc - Lewis Canyon Rhyolite |
| Qm- Basalt of Mariposa Lake |
| Qmb- Big Bear Lake flow |
| Qmf- Flat Mountain flow |
|
| Qmh- Mount Haynes flow |
|
| Qml- Harlequin lake flow |
|
| Qmm- Moose Creek Butte flow |
| Qmr- Madison River Basalt |
|
| Qmw- Wapiti Lake flow |
| Qo- Osprey Basalt |
| Qpca- Aster Creek flow |
|
| Qpcb- Buffalo Lake flow |
|
| Qpcc- Spring Creek flow |
|
| Qpcc?- Spring Creek flow, queried |
|
| Qpcd- Dry Creek flow |
|
| Qpce- Elephant Back flow |
|
| Qpcf- Solfatara Plateau flow |
|
| Qpcg- Grants Pass flow |
|
| Qpch- Hayden Valley flow |
|
| Qpck- Douglas Knob dome |
| Qpcl- Tuff of Bluff Point |
|
| Qpcm- Mary Lake flow |
|
| Qpcmf- Moose Falls flow |
|
| Qpcn- Nez Perce Creek flow |
|
| Qpcn?- Nez Perce Creek flow, queried |
|
| Qpco- Tuff of Cold Mountain flow |
|
| Qpcp- Pitchstone Plateau flow |
|
| Qpcr- Bechler River flow |
|
| Qpcs- Summit Lake flow |
|
| Qpct- Trischman Knob flow |
|
| Qpcu- Spruce Creek flow |
|
| Qpcu?- Spruce Creek flow, queried |
|
| Qpcw- West Thumb flow |
|
| Qpcy- West Yellowstone flow |
| Qpm- Mallard Lake flow |
| Qpoa- Apollinaris Spring dome |
| Qpog- Rhyolite-basalt mixed lavas of Gardiner River |
| Qpoh- Gibbon Hill dome |
|
| Qpol- Landmark dome |
|
| Qpop- Paintop Hill dome |
|
| Qpow- Willow Park dome |
|
| Qpoz- Rhyolite- basalt mixed lavas of Grizzly Lake |
| Qprc- Cougar Creek dome |
|
| Qprg- Gibbon River flow |
|
| Qpro- Obsidian Cliff flow |
| Qprr- Riverside flow |
|
| Qprs- Crystal Spring flow |
| Qpub- Biscuit Basin flow |
| Qpuc- Canyon flow |
| Qpud- Dunraven Road flow |
| Qpul- Scaup Lake flow |
| Qpus- Tuff of Sulphur Creek |
| Qput- Tuff of Uncle Tom's Trail |
| Qs- Detrital Deposits |
| Qsl- Swan Lake Flat Basalt |
| Qso- Sediments |
| Qtn- Sediments and basalts of The Narrows |
| Quf- Undine Falls Basalt |
| Qw- Basalt of Warm River |
| Qyla- Lava Creek Tuff Member A |
| Qylb- Lava Creek Tuff Member B |
| Qym- Mesa Falls Tuff |
| TMzs- Sedimentary rocks |
| Tcc- Conant Creek Tuff and tuff of Kilgore |
| Te- Gravel of Mount Everts |
| Thl- Heart Lake Conglomerate |
| Ti- Intrusive rocks |
| Tj- Junction Butte Basalt |
| Tv- Volcanic rocks |
| Tyha- Huckleberry Ridge Tuff Member A |
| Tyhb- Huckleberry Ridge Tuff Member B |
| Tyhb?- Huckleberry Ridge Ruff Member B, queried |
| Tyhc- Huckleberry Ridge Tuff Member C |
| pCm - Metamorphic rocks |
| water |
|
| Qa- Alluvium |
| Qbb- Bishop Mountain flow |
|
| Qbb?- Bishop Mountain flow, queried |
| Qbg- Green Canyon flow |
| Qbh- Headquarters flow |
| Qbl- Blue Creek flow |
| Qbt- Ash-flow tuff of Lyle Spring |
| Qd- Glacial drift |
| Qe- Dune sand |
|
| Qfr- Falls River Basalt |
|
| Qge- Gerrit Basalt |
|
| Qie- Elk Butte dome |
|
| Qil- Lookout Butte dome |
|
| Qio- Osborne Butte dome |
|
| Qis- Silver Lake dome |
|
| Qiw- Warm River Butte dome |
|
| Qmm- Moose Creek Butte dome |
| Qpcb- Buffalo Lake flow |
|
| Qpcs- Summit Lake flow |
|
| Qpcy- West Yellowstone flow |
|
| Qsr- Basalts of the Snake River Group |
| Qws- Basalts of Warm River and Shotgun Valley |
|
| Qylb- Member B, Lava Creek Tuff |
|
| Qym- Mesa Falls Tuff |
|
| Tcc- Conant Creek Tuff and tuff of Kilgore |
| Tr- Rhyolite of Sheridan Resevoir |
| Trs- Rhyolite of Snake River Butte |
| Ts- Silt and Sand |
|
| Tyha- Member A, Huckleberry Ridge Tuff |
|
| Tyhb- Member B, Huckleberry Ridge Tuff |
|
| Tyhc- Member C, Huckleberry Ridge Tuff |
| pTr- Sedimentary rocks |
|
| water |
| QTbo- Basalts contemporaneous with first and second volcanic cycles |
| Qbbl- Big Bend Ridge Rhyolite, lower flows |
|
| Qbbu- Big Bend Ridge Rhyolite, upper flows |
| Qby- Post-Lava Creek Tuff plateau- marginal basalts |
|
| Qi- Island Park Rhyolite |
| Qml- Mount Jackson and Lewis Canyon Rhyolites |
|
| Qp- Plateau Rhyolite |
|
| Qs- Surficial deposits |
|
| Qsr- Basalts of the Snake River Group |
|
| Quf- Undine Falls Basalt |
| Qyl- Lava Creek Tuff |
|
| Qym- Mesa Falls Tuff |
| Tb- Basalts |
| TpCu- Sedimentary, igneous and metamorphic rocks |
| Tr- Rhyolites, including Conant Creek Tuff and tuff of Kilgore |
| Ts- Sedimentary rocks |
| Tsb- Rhyolite of Snake River Butte |
|
| Tyh- Huckleberry Ridge Tuff |
