Calvin Image Database Search

Geology of Buchanan Co., Iowa

	O'Toole Quarry Photograph details: Location: U.S., Iowa, Buchanan Co.; Independence. Photographed by: Samuel Calvin. Lantern Slide No. 1479. Photograph No. 82 - Larger Image -
	O'Toole Quarry Photograph details: Location: U.S., Iowa, Buchanan Co.; Independence. Photographed by: Samuel Calvin. Lantern Slide No. 1477. Photograph No. 83 - Larger Image -
	Folded and fissured limestone Photograph details: Location: U.S., Iowa, Buchanan Co.; at Brandon. Photographed by: Samuel Calvin. Lantern Slide No. 1467. Photograph No. 87 - Larger Image -
	City Quarry Photograph details: Location: U.S., Iowa, Buchanan Co.; Independence, Iowa. Geologic Age: Devonian, Wapsipinicon Stage. Photographed by: Samuel Calvin. Lantern Slide No. 1478. Photograph No. 97 - Larger Image -
	Pine Creek Photograph details: Location: U.S., Iowa; Buchanan Co. Photographed by: Samuel Calvin. Photograph No. 100 - Larger Image -
	Mill at Littleton Photograph details: Location: U.S., Iowa, Buchanan Co.; Wapsipinicon River. Photographed by: Samuel Calvin. Lantern Slide No. 1470. Photograph No. 112 - Larger Image -
	Exposure of Devonian limestone on the Wapsipinicon River Photograph details: Location: U.S., Iowa, Buchanan Co.; Littleton. Photographed by: Samuel Calvin. Lantern Slide No. 1468. Photograph No. 124 - Larger Image -
	Iowan boulders overlying Buchanan Gravels Photograph details: Location: U.S., Iowa, Buchanan Co.; Independence, near. Geologic Age: Pleistocene Photograph No. 581 Lantern Slide No. 1251 - Larger Image -
	The Buchanan Gravels, Illinois Central gravel pit, horizontal view Photograph details: Location: U.S., Iowa, Buchanan Co.; Independence, near. Geologic Age: Pleistocene, Buchanan Gravels. Photograph No. 582 - Larger Image -
	Buchanan Gravels with boulders of Iowan stage, Illinois Central Gravel Pit Photograph details: Location: U.S., Iowa, Buchanan Co.; Independence, near. Photograph No. 583 - Larger Image -
	The Sentinel and Sleeping Boulders, section 19 Photograph details: Location: U.S., Iowa, Buchanan Co.; Newton Twp.. Photograph No. 584 - Larger Image -
	The Buchanan Gravels, vertical view, Illinois Central gravel pit Photograph details: Location: U.S., Iowa, Buchanan Co.; Independence, near. Geologic Age: Pleistocene, Buchanan Gravels. Photograph No. 585 - Larger Image -
	Buchanan Gravels Photograph details: Location: U.S., Iowa, Buchanan Co.; Winthrop, near. Geologic Age: Pleistocene. Photograph No. 605 - Larger Image -
	Boulder Field Photograph details: Location: U.S., Iowa, Buchanan Co.; Newton Twp.. Photograph No. 627 - Larger Image -
	Railway cut Photograph details: Location: U.S., Iowa, Buchanan Co.; Oelwein. Photograph No. 862 - Larger Image -
	Iowan stage boulders Photograph details: Location: U.S., Iowa, Buchanan Co.; Winthrop, near. Photograph No. 865 - 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.

Photograph No: 581. Buchanan Gravels, Iowan boulders overlying Buchanan Gravels. Location: U.S., Iowa, Buchanan Co.; Independence, near. Geologic Age: Pleistocene, Buchanan Gravels.

Photograph No: 603. Boulder field. Location: U.S., Iowa, Buchanan Co.; Newton Twp..

Photograph No: 607. Buchanan Gravels. Location: U.S., Iowa, Buchanan Co.; Winthrop, near. Geologic Age: Pleistocene, Buchanan Gravels.

Photograph No: 630. Buchanan Gravels. Location: U.S., Iowa, Buchanan Co.; Near Winthrop. Geologic Age: Pleistocene, Buchanan Gravels.

Photograph No: 632. Boulders on Iowan Plain. Location: U.S., Iowa, Buchanan Co.; East of Independence.