Calvin Image Database Search

Geology of Keokuk Co., Iowa


Group of Geodes

Group of Geodes

Photograph details:
Location: U.S., Iowa, Keokuk Co.; Upper Keokuk

Geologic Age:
Photograph No. 539
Lantern Slide No. 1464

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Atwood Quarry

Photograph details:
Location: U.S., Iowa, Keokuk Co.; Atwood Quarry.

Geologic Age: Mississippian, St. Louis Limestone.
Photograph No. 1128


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Loess over Kansan gumbotil

Photograph details:
Location: U.S., Iowa, Keokuk Co.; Hedrick, east part of, Benton Twp..

Geologic Age: Pleistocene, Loess over Kansan gumbotil.
Photographed by: Earl T. Apfel, June 29, 1925. Lantern Slide No. 6182.
Photograph No. 7212


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Any additional plates from the Calvin Collection are listed below.
These will be added to the database in due course, but if you are interested in seeing them in advance, please contact Tiffany Adrain.



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