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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

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

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

View looking southeast of Section 16.

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 till and gumbotil with Illinoian till above on the back of Gus Miller's farm, Washington Township, June 21, 1924

Located in Washington Twp. southeast corner Section 28.

Loess and Iowan till, Windsor Township, Iowa, July 10, 1924

Located in Windsor Twp., Section 16. Looking south middle of north line of northeast 1/4.

Map of Iowa with triangles marking the localtions of Nebraskan gumbotil and crosses marking Kansan gumbotil locations, Iowa, late 1890s or early 1900s

Map of Iowa marked with x on the locations of Kansan gumbotil exposures, Iowa, late 1890s or early 1900s

Panorama of Kansan section of Peorian loess on Kansan gumbotil shown in Neg. 7441, Oregon Township, Iowa, August 1933

Located in NW 1/4, section 34 of Oregon Twp. Neg. 7441 can be seen here http://cdm.lib.uiowa.edu/u?/calvin,352

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

Oregon Twp., NW 1/4, section 34

Kansan section showing Peorian loess on Kansan gumbotil, oxidized and leached till, ox, and unleached till, Oregon Township, Iowa, August 1933

Located in Oregon Twp., along Primary 161, at top of hill, South of Long Creek, NW 1/4, section 34, showing roadway.

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