Calvin Image Database Search

Geology of Keokuk Co., Iowa

	Group of Geodes Photograph details: Location: U.S., Iowa, Keokuk Co.; Upper Keokuk Geologic Age: Photograph No. 539 Lantern Slide No. 1464 - Larger Image -
	Atwood Quarry Photograph details: Location: U.S., Iowa, Keokuk Co.; Atwood Quarry. Geologic Age: Mississippian, St. Louis Limestone. Photograph No. 1128 - Larger Image -
	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 - Larger Image -

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.