GDI’s Stratigraphic Study Locations
Available regions are depicted in the map, and specific Stratigraphic Study Locations are listed below. By clicking each study listed, example information is available for review. Please contact us to purchase a study. Prices are also available on this site.

West Coast Region
West Texas Region
Mid Continent Region
Gulf Coast Region
Rocky Mountain Region
- Frontier Formation of the Powder River Basin
- Dakota/Lakota Sandstones of the Powder River Basin
- Dakota Sandstones of the Green River Basin
- Leo Member of the Minnelusa Formation
- Minnelusa Sandstones of the Powder River Basin
- Morrow Series of the Las Animas Arch
- Muddy Sandstones of Northern Powder River Basin
- Muddy Sandstones of the Wind River Basin
- Muddy Sandstones of the Southern Powder River Basin
- Paleozoics of the Denver Basin
- Powder River Basin Digital Stratigraphic Database
- Tensleep/Phosphoria of the Bighorn Basin
- Williston Basin Digital Stratigraphic Database