Calvin Image Database Search

Geology of Humboldt Co., Iowa


Weathering of Kinderhook Oolite; Carboniferous

Photograph details:
Location: U.S., Iowa; Humboldt Co.

Geologic Age: Mississippian, Kinderhook oolite.
Photographed by: Samuel Calvin. Lantern Slide No. 1418.
Photograph No. 197


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Cliff of Kinderhook Oolite

Photograph details:
Location: U.S., Iowa, Humboldt Co.; Des Moines River.


Photographed by: Samuel Calvin. Lantern Slide No. 1417.
Photograph No. 216


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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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