Browse Items · Iowa Heritage Digital Collections
Iowa Heritage Digital Collections
State Library of Iowa
Advanced Search

Browse Items (71585 total)

Erosion and Huronian glaciation of Split Rock Creek, Palisades, S.D., late 1890s or early 1900s

Erosion and Huronian glaciation of Split Rock Creek, Palisades, S.D., late 1890s or early 1900s

Erosion and Huronian glaciation of Split Rock Creek, Palisades, S.D., late 1890s or early 1900s

Erosion and Huronian glaciation of Split Rock Creek, Palisades, S.D., late 1890s or early 1900s

Huronian, showing erosion in the Palisades State Park on Split Rock Creek, Garretson, S. D., late 1890s or early 1900s

Huronian, showing erosion in the Palisades State Park on Split Rock Creek, Garretson, S. D., late 1890s or early 1900s

Carboniferous shale, Mena, Ark., late 1890s or early 1900s

Carboniferous shale, Mena, Ark., late 1890s or early 1900s

Located east of Mena, Arkansas.
Carboniferous sandstone cliffs near Boneyard Hollow in Dolliver Memorial State Park, Lehigh, Iowa, late 1890s or early 1900s

Carboniferous sandstone cliffs near Boneyard Hollow in Dolliver Memorial State Park, Lehigh, Iowa, late 1890s or early 1900s

Coal Measure Shale, Fort Dodge, Iowa, late 1890s or early 1900s

Coal Measure Shale, Fort Dodge, Iowa, late 1890s or early 1900s

Outlier of Carboniferous sandstone, Iowa City, Iowa, late 1890s or early 1900s

Outlier of Carboniferous sandstone, Iowa City, Iowa, late 1890s or early 1900s

Cavern in Carboniferous sandstone, Wild Cat Den State Park, Iowa, late 1890s or early 1900s

Cavern in Carboniferous sandstone, Wild Cat Den State Park, Iowa, late 1890s or early 1900s

Carboniferous outlier, Iowa City, Iowa, late 1890s or early 1900s

Carboniferous outlier, Iowa City, Iowa, late 1890s or early 1900s

Jointed structure in Carboniferous sandstone, Montpelier, Iowa, late 1890s or early 1900s

Jointed structure in Carboniferous sandstone, Montpelier, Iowa, late 1890s or early 1900s