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Institution
Collection
Subject
24
Geology, Stratigraphic
16
Geology
3
Blackleaf Formation (Mont.)
3
Frontier Formation
3
Stratigraphic correlation
2
Paleontology
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2
Volcanic ash, tuff, etc
1
Batholiths
1
Formations (Geology)
1
Geochronometry
1
Igneous rocks
1
Intrusions (Geology)
1
Jake Canyon Fault (Mont.)
1
Magmas
1
Metengonoceras
1
Montana Geology
1
Natural gas
1
Natural gas Geology
1
Natural gas Prospecting
1
Petroleum Geology
1
Radioactive dating
1
Rocks Analysis
1
Sedimentary rocks
1
Sliderock Mountain (Sweet Grass County, Mont.)
1
Volcanoes
1
Yellowjacket Formation (Idaho)
1
Zeolites
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Author
Geological Survey (U.S.)
6
Dyman, T. S.
5
Tysdal, Russell G.
3
Du Bray, E. A.
3
Rice, Dudley D.
2
Harlan, Stephen S.
more ...
2
Nichols, Douglas J.
1
Cobban, William A., 1916-2015
1
Condon, Steven M.
1
Johnson, Ronald C. 1950-
1
Kellogg, Karl S.
1
Kennedy, W. J.
1
McGrew, Laura W. 1921-
1
Mudge, Melville R., 1921-2009
1
National Energy Technology Laboratory (U.S.)
1
Pearson, Robert Carl, 1926-
1
Skipp, Betty, 1928-
1
Snee, Lawrence W.
1
Tysdal, Russell G.,
1
Zen, E-an, 1928-2014
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Language
Literary Form
Region
Montana
3
Beaverhead County
3
Blackleaf Formation (Mont.)
3
Frontier Formation
2
Madison County
2
Madison Range
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2
Pioneer Mountains
2
Wyoming
1
Alberta
1
Big Belt Mountains
1
Blacktail Mountains
1
Broadwater County
1
Craig Region
1
Crazy Mountains
1
Crazy Mountains Region
1
Idaho
1
Jake Canyon Fault (Mont.)
1
Meagher County
1
Pioneer Mountains Region
1
Saskatchewan
1
Sliderock Mountain (Sweet Grass County)
1
Sliderock Mountain (Sweet Grass County, Mont.)
1
Slim Sam Formation
1
Sweet Grass County
1
Yellowjacket Formation
1
Yellowjacket Formation (Idaho)
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Year of Publication