Location: U.S., Iowa, Lyon Co.; Jasper Pool, northwest section of land in Iowa.
Geologic Age: Pre-Cambrian, Sioux Quartzite.
Photograph No. 1107
- 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.