Wikimedi'Òc

Hebgen Lake Landslide.jpg - MONGO

Hell Creek.jpg - Leptictidium

Lewis overthrust fault nh10f.jpg - H-stt

Giant ripple marks.jpg - דקי

Adel mountains montana hardybridge.jpg - Tim1965

Sleeping Giant 2010.jpg - Montanabw

State Highway 287 slumped into Hebgen Lake.jpg - File Upload Bot (Magnus Manske)

Sevierorogeny.jpg - Pinkcorundum

TransZ.jpg - Pinkcorundum

Medicine Rocks State Park.jpg - Oporto2

Limestone Butte Montana Laccolith.jpg - BotMultichillT

Bearpaws.jp.jpg - Montanabw

Square Butte, MT.jpg - Montanabw

Normal fault, MT.jpg - Rygel, M.C.

Eagle Butte, Bearpaw Mountains.jpg - Vsmith

Bearpaw Mtns.jpg - Vsmith

Harzburgite (Stillwater Complex, Neoarchean, 2.71 Ga; Beartooth Mountains, Montana, USA) (16601144800).jpg - Qtz arenite

HPC-000950.jpg (66b39d7ed0454b3bb371e4e7058ecd8a).jpg - BMacZeroBot

Quartz-sulfide hydrothermal vein in quartz monzonite (Butte Quartz Monzonite, Late Cretaceous; Continental Pit, Butte, Montana, USA) (30588174684).jpg - Ser Amantio di Nicolao

FEDLINK - United States Federal Collection (IA CAT10634531).pdf - Faebot

Covellite (latest Cretaceous to earliest Tertiary, 62-66 Ma; Butte Mining District, Montana, USA) 2.jpg - Ser Amantio di Nicolao

Covellite-enargite-pyrite hydrothermal vein in quartz monzonite (Butte Mining District, Montana, USA) 2.jpg - Ser Amantio di Nicolao

5356 1.md.gif - Parzivall100

Judith River Formation exposure-2.jpg - Carpenter, Kenneth

Judith River Formation exposure-1.jpg - Carpenter, Kenneth

Kootenai Formation.jpg - Carpenter, Kenneth

Altyn and Appekunny Fm Slingshot Mtn.jpg - Carpenter, Kenneth

Double terminated quartz in rhyolite.jpg - Carpenter, Kenneth

Lokiceratops (discovery, locality, and skeletal).jpg - SlvrHwk

Aerial View Camas Prairie Ripples Montana.jpg - Paul H.