Iowa Heritage Digital Collections
State Library of Iowa

Browse Items (748 total) for Calvin Geological Photographs

Kansan gumbotil, soil, and Iowan till, Wayne Township, Iowa, July 8, 1924

Kansan gumbotil, soil, and Iowan till, Wayne Township, Iowa, July 8, 1924

Located in Wayne Twp. near middle of north line of Section 30 looking east.
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.
Illinoian gumbotil plain, Fort Madison, Iowa, June 21, 1924

Illinoian gumbotil plain, Fort Madison, Iowa, June 21, 1924

Located in Washington Twp., S.E. quarter Section 33. Photographed from the edge of bluffs above Fort Madison.
Little Brown Church in the Vale, Bradford Congregational Church known as the "Little Brown Church in the Vale" located 2 miles northeast of Nashua, Iowa, July 12, 1924

Little Brown Church in the Vale, Bradford Congregational Church known as the "Little Brown Church in the Vale" located 2 miles northeast of Nashua, Iowa, July 12, 1924

Crumbling granite boulder, English Township, Iowa, June 30, 1924

Crumbling granite boulder, English Township, Iowa, June 30, 1924

Located in English Twp., middle of N.W. Section 23.
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.
Relief in Kansan plain along tributary to Whitebreast Creek, Whitebreast Township, Iowa, June 29, 1924

Relief in Kansan plain along tributary to Whitebreast Creek, Whitebreast Township, Iowa, June 29, 1924

Located south from near middle of south line of Section 17 in Whitebreast Township.
Cracked gumbotil and contact with loess above, Iowa, July 25, 1924

Cracked gumbotil and contact with loess above, Iowa, July 25, 1924

Located in Monroe and 1 Athens Twp., middle of east half of line between Sections 36.
Crumbling granite boulders, English Township, Iowa, June 30, 1924

Crumbling granite boulders, English Township, Iowa, June 30, 1924

Located in English Twp., middle of N.W. quarter, Section 23.
Iowan till over Kansan gumbotil, soil on top of the gumbotil, Wayne Township, Iowa, July 8, 1924

Iowan till over Kansan gumbotil, soil on top of the gumbotil, Wayne Township, Iowa, July 8, 1924

View looking east near middle of north line of Section 30 in Wayne Township.
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