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Browse Items (748 total) for Calvin Geological Photographs

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Kansan gumbotil with Iowan till above, gumbotil line marked by cleared area and field bag, Wayne Township, Iowa, July 08, 1924

Kansan gumbotil with Iowan till above, gumbotil line marked by cleared area and field bag, Wayne Township, Iowa, July 08, 1924

Located in Wayne Twp. near middle of north line of Section 30. View looking southwest.

Kansan gumbotil with Iowa topography in the background, Massilon Township, Iowa, July 18, 1925

Kansan gumbotil with Iowa topography in the background, Massilon Township, Iowa, July 18, 1925

Located in Massilon Twp. sections 30 and 31.

Kansan gumbotil with Illinoian till above on Miller Farm, Washington Township, Iowa, July 10, 1925

Kansan gumbotil with Illinoian till above on Miller Farm, Washington Township, Iowa, July 10, 1925

Located on Miller Farm in Washington Twp., SW 1/4, section 28 on the east side of the railroad tracks.

Kansan gumbotil overlain by Peorian loess, Oregon Township, Iowa, August 1933

Kansan gumbotil overlain by Peorian loess, Oregon Township, Iowa, August 1933

Oregon Twp., NW 1/4, section 34

Kansan gumbotil covered with Iowan till with background of Iowan constructional topography; Windsor Township, Iowa, July 10, 1924

Kansan gumbotil covered with Iowan till with background of Iowan constructional topography; Windsor Township, Iowa, July 10, 1924

View looking southeast of Section 16.

Kames, Thornton, Iowa, late 1890s or early 1900s

Kames, Thornton, Iowa, late 1890s or early 1900s

Located northwest of Thornton.

Julien Dubuque Monument made of Galena Limestone, Dubuque, Iowa, late 1890s or early 1900s

Julien Dubuque Monument made of Galena Limestone, Dubuque, 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

Jimtown Mill, Colo., late 1890s or early 1900s

Jimtown Mill, Colo., late 1890s or early 1900s

Jimtown Gateway from Red Mountain to the canyon of Left Hand Creek, Colo., late 1890s or early 1900s

Jimtown Gateway from Red Mountain to the canyon of Left Hand Creek, Colo., late 1890s or early 1900s

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