Iowa Heritage Digital Collections
State Library of Iowa

Browse Items (748 total) for Calvin Geological Photographs

Outlier of Niagaran limestone in Williams Quarry, Clermont, Iowa, late 1890s or early 1900s

Outlier of Niagaran limestone in Williams Quarry, Clermont, Iowa, late 1890s or early 1900s

People on stairway at""Devil's Backbone", Backbone State Park, Dundee, Iowa, late 1890s or early 1900s

People on stairway at""Devil's Backbone", Backbone State Park, Dundee, Iowa, late 1890s or early 1900s

Rocks in the valley of the Yellow River, Iowa, late 1890s or early 1900s

Rocks in the valley of the Yellow River, Iowa, late 1890s or early 1900s

Located in Twp. 96, R.V., Section 14, S.W. gr., N.W. 1/4.
Business district with sandstone hills and bed of Cenozoic -- Miocene, Hot Springs, South Dakota, late 1890s or early 1900s

Business district with sandstone hills and bed of Cenozoic -- Miocene, Hot Springs, South Dakota, late 1890s or early 1900s

Museum specimens, New Science Building, University of Iowa, late 1890s or early 1900s

Museum specimens, New Science Building, University of Iowa, late 1890s or early 1900s

Section (3) of Buchanan gravels folded and contorted by the Iowan Ice Sheet in the first Interurban cut, Iowa, late 1890s or early 1900s

Section (3) of Buchanan gravels folded and contorted by the Iowan Ice Sheet in the first Interurban cut, Iowa, late 1890s or early 1900s

Located north of the upper Interurban bridge.
Kansan topography, showing mature topography developed by erosional loess overlying Kansan drift; Coralville, Iowa, late 1890s or early 1900s

Kansan topography, showing mature topography developed by erosional loess overlying Kansan drift; Coralville, Iowa, late 1890s or early 1900s

Located at Coralville, north of, S.W. 1/4 Section 32, T. 80 W. R..
Iowa River as a characteristic stream of the drift covered area, Old Capital Quarries, Iowa, late 1890s or early 1900s

Iowa River as a characteristic stream of the drift covered area, Old Capital Quarries, Iowa, late 1890s or early 1900s

Chart of general table of geologic divisions

Chart of general table of geologic divisions

Iowa Geological Section chart, late 1890s or early 1900s

Iowa Geological Section chart, late 1890s or early 1900s

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