Preliminary calculations for formations within and bordering Montana and Wyoming
Disclaimer: Please be advised that although instructive in representing relative sequestration capacities, the volume estimates shown in this initial map series have been subject to recent revision. Consequently, it is requested that Partners retain these values for reference only within the Partnership itself; no responsibility is assumed by the Big Sky Geologic or GIS Teams for distribution of these initial estimates to third parties. Maps with updated estimates - now in preparation - will be available here.
| Province #, Name | Play #, Name | Formation (pdf) | |
| 27 Montana Thrust Belt | 2701 Confirmed Imbricate Thrust Gas |  |
Madison |
| 28 North-Central MT | 2805 Devonian-Mississippian Carbonates | |
Madison |
| |
Nisku | ||
| 2806 Tyler Sandstone | |
Tyler | |
| 2807 Fractured-Faulted Carbonates in Anticlines | |
Duperow | |
| |
Greenhorn | ||
| |
Madison | ||
| |
Niobrara | ||
| |
Nisku | ||
| |
Piper | ||
| |
Potlatch | ||
| |
Souris River | ||
| |
Three Forks | ||
| 2808 Jurassic-Cretaceous Sandstone | |
Blackleaf | |
| |
Kootenai | ||
| |
Morrison | ||
| |
Sawtooth | ||
| |
Swift | ||
| 2809 Shallow Cretaceous Biogenic Gas | |
Blackleaf | |
| 29 Southwest Montana | 2901 Crazy Mtns and Lake Basins Cretaceous Gas | |
Dakota |
| |
Eagle | ||
| |
Frontier | ||
| |
Judith River | ||
| |
Lakota | ||
| |
Muddy | ||
| |
Virgelle | ||
| 2903 Nye-Bowler Wrench Zone Oil and Gas | |
Eagle | |
| |
Greybull | ||
| |
Judith River | ||
| |
Kootenai | ||
| |
Lakota | ||
| |
Virgelle | ||
| 31 Williston Basin | 3101 Madison (Mississippian) | |
Charles |
| |
Mission Canyon | ||
| 3102 Red River (Ordivician) | |
Red River | |
| |
Stony Mountain | ||
| 3103 Mid/Upper Devonian ... | |
Duperow | |
| |
Nisku | ||
| |
Three Forks | ||
| 3105 Pre-Prairie Middle Devonian and Silurian | |
Dawson Bay | |
| |
Interlake | ||
| |
Souris River | ||
| |
Winnipegosis | ||
| 3106 Post-Madison to Triassic Clastics | |
Amsden | |
| |
Heath | ||
| |
Tyler | ||
| 3107 Pre-Red River Gas | |
Deadwood | |
| |
Winnipeg | ||
| 33 Powder River Basin | 3302 Basin Margin Anticline | |
Dakota |
| |
Frontier | ||
| |
Leo | ||
| |
Minnelusa |
||
| |
Muddy | ||
| |
Tensleep |
||
| 3303 Leo Sandstone | |
Leo (Minnelusa) | |
| 3304 Upper Minnelusa Sandstone | |
Minnelusa |
|
| 3305 Upper Minnelusa Sandstone | |
Lakota | |
| 3306 Fall River Sandstone | |
Dakota | |
| 3307 Muddy Sandstone | |
Muddy | |
| |
Newcastle | ||
| 3309 Deep Frontier Sandstone | |
Frontier | |
| |
Turner Sandy | ||
| |
Wall Creek | ||
| 3310 Turner Sandstone | |
Turner Sandy | |
| 3312 Sussex-Shannon Sandstone | |
Shannon | |
| |
Sussex | ||
| 3313 Mesaverde-Lewis | |
Parkman | |
| |
Teapot | ||
| |
Teckla | ||
| 3402 Basin Margin Anticline Play | |
Amsden | |
| |
Bighorn | ||
| |
Chugwater | ||
| |
Cloverly |
||
|
Crow Mountain | ||
| |
Dakota | ||
| |
Dinwoody | ||
| |
Frontier | ||
| |
Lakota | ||
| |
Greybull | ||
| |
Madison | ||
| |
Muddy | ||
| |
Phosphoria | ||
| |
Tensleep | ||
| 34 Big Horn Basin | 3403 Deep Basin Structure | |
Frontier |
| |
Muddy | ||
| |
Phosphoria | ||
| |
Tensleep | ||
| 3406 Phosphoria Stratigraphic | |
Phosphoria | |
| 35 Wind River Basin | 3501 Basin Margin Subthrust | |
Frontier |
| |
Phosphoria | ||
| |
Tensleep | ||
| 3502 Basin Margin Anticline | |
Cloverly | |
| |
Cody | ||
| |
Crow Mountain | ||
| |
Dakota | ||
| |
Frontier | ||
| |
Lakota | ||
| |
Madison | ||
| |
Mesaverde | ||
| |
Muddy | ||
| |
Nugget |
||
| |
Phosphoria | ||
| |
Tensleep |
||
| 3503 Deep Basin Structure | |
Cloverly | |
| |
Cody | ||
| |
Fales | ||
| |
Fort Union | ||
| |
Frontier |
||
| |
Lance | ||
| |
Madison | ||
| |
Mesaverde | ||
| |
Morrison | ||
|
Muddy | ||
| |
Nugget | ||
| |
Wind River | ||
| 3504 Muddy Sandstone Stratigraphic | |
Muddy | |
| 3515 Shallow Tertiary-Upper Cretaceous Strat. | |
Fort Union | |
| |
Lance | ||
| |
Mesaverde | ||
| 36 Wyoming Thrust Belt | 3601 Moxa Arch Extension | |
Bighorn |
| |
Darby | ||
| |
Madison | ||
| |
Phosphoria | ||
| |
Wells | ||
| 3604 Absaroka Thrust | |
Ankareh | |
| |
Bighorn | ||
| |
Darby | ||
| |
Lodgepole | ||
| |
Mission Canyon | ||
| |
Nugget | ||
| |
Phosphoria | ||
| |
Thaynes | ||
| |
Twin Creek | ||
| |
Weber | ||
| 3606 Hogsback Thrust | |
Amsden | |
| |
Bear River | ||
| |
Darby | ||
| |
Frontier | ||
| |
Madison | ||
| |
Phosphoria | ||
| |
Thaynes | ||
| 3607 Cretaceous Stratigraphic | |
Bear River | |
| |
Frontier | ||
| |
Hilliard | ||
| 37 Southwestern WY | 3701 Rock Springs Uplift | |
Almond |
| |
Aspen | ||
| |
Blair | ||
| |
Dakota | ||
| |
Entrada | ||
| |
Frontier | ||
| |
Lewis | ||
| |
Madison | ||
| |
Nugget | ||
| |
Phosphoria | ||
| |
Wasatch | ||
| |
Weber | ||
| 3702 Rock Springs Uplift | |
Almond | |
| |
Dakota | ||
| |
Fort Union | ||
| |
Lance | ||
| |
Lewis | ||
| |
Nugget | ||
| |
Wasatch | ||
| 3704 Moxa Arch-La Barge | |
Almy | |
| |
Bear River | ||
| |
Dakota | ||
| |
Frontier | ||
| |
Madison | ||
| |
Mesaverde | ||
| |
Morgan | ||
| |
Nugget | ||
| 3705 Basin Margin Anticline | |
Almond | |
| |
Almy | ||
| |
Dakota | ||
| |
Entrada | ||
| |
Fort Union | ||
| |
Frontier | ||
| |
Lance | ||
| |
Lewis | ||
| |
Madison | ||
| |
Mesaverde | ||
| |
Morgan | ||
| |
Morrison | ||
| |
Niobrara | ||
| |
Nugget | ||
| |
Phosphoria | ||
| |
Rock Springs | ||
| |
Wasatch | ||
| |
Weber | ||
| 3707 Platform | |
Almond | |
| |
Dakota | ||
| |
Fort Union | ||
| |
Frontier | ||
| |
Lance | ||
| |
Lewis | ||
| |
Madison | ||
| |
Marapos | ||
| |
Mesaverde | ||
| |
Morrison | ||
| |
Niobrara | ||
| |
Phosphoria | ||
| |
Rock Springs | ||
| |
Wasatch |
