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The effects of geologic structure on topographic form within the driftless area. The gently undulating, lower slopes are underlain by Maquoketa Shale, the steep hills in the background are of the overlying Niagaran Limestone. Graf, Iowa, late 1890s or early 1900s

The effects of geologic structure on topographic form within the driftless area. The gently undulating, lower slopes are underlain by Maquoketa Shale, the steep hills in the background are of the overlying Niagaran Limestone. Graf, Iowa, late 1890s or early 1900s

Title

The effects of geologic structure on topographic form within the driftless area. The gently undulating, lower slopes are underlain by Maquoketa Shale, the steep hills in the background are of the overlying Niagaran Limestone. Graf, Iowa, late 1890s or early 1900s

Description

Located south from Lattner's, near Graf.

Creator

Calvin, S. (Samuel), 1840-1911

Source

Photographs scanned using Epson Expression 1680 scanner at 300 ppi, 8-bit greyscale.

Publisher

University of Iowa. Dept. of Geoscience. Paleontology Repository
Contact Tiffany Adrain (tiffany-adrain@uiowa.edu) at The University of Iowa Paleontology Repository http://www.uiowa.edu/~geology/paleo

Date

1895/1910
2006-02-24

Rights

This digital image may be used for educational purposes, as long as it is not altered in any way. No commercial reproduction or distribution of this file is permitted without permission.

Relation

Calvin Geological Photographs
This digital collection contains the geology-related images originally digitized for the Dept. of Geosciences' Calvin web exhibit: http://www.uiowa.edu/~calvin/calvin.htm . Calvin's images of Iowa City can be viewed in the Iowa City Town and Campus Scenes Digital Collection: http://digital.lib.uiowa.edu/ictcs

Format

jpeg
5
7

Type

Still image
Photographs; Dry collodion negatives

Identifier

0141
1569
173611416
http://128.255.22.135/cdm/ref/collection/calvin/id/136