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Sediment or sedimentary rock

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Sediment or sedimentary rock (no unique unit description on map).
State Montana
Name Sediment or sedimentary rock
Geologic age Tertiary
Lithologic constituents
Major
SedimentarySediment or sedimentary rock
References

Vuke, S.M., Porter, K.W., Lonn, J.D., and Lopez, D.A., 2007, Geologic Map of Montana - Compact Disc: Montana Bureau of Mines and Geology: Geologic Map 62-C, 73 p., 2 sheets, scale 1:500,000. This map was digitized in 2012 as a result of a contract between the U.S. Geological Survey and the Montana Bureau of Mines and Geology.
NGMDB product
Counties Beaverhead - Deer Lodge - Flathead - Gallatin - Granite - Lake - Lewis and Clark - Madison - Meagher - Mineral - Missoula - Park - Powell - Sanders - Silver Bow