Bluff of Galena Limestone above the bridge at Bluffton, Iowa, late 1890s or early 1900s
<a href="/items/browse?advanced%5B0%5D%5Belement_id%5D=49&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=Geology">Geology</a>
<a href="/items/browse?advanced%5B0%5D%5Belement_id%5D=49&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=United+States+--+Iowa+--+Winneshiek+County+--+Bluffton">United States -- Iowa -- Winneshiek County -- Bluffton</a>
<a href="/items/browse?advanced%5B0%5D%5Belement_id%5D=49&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=190-">190-</a>
<a href="/items/browse?advanced%5B0%5D%5Belement_id%5D=49&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=Paleozoic+--+Ordovician">Paleozoic -- Ordovician</a>
<a href="/items/browse?advanced%5B0%5D%5Belement_id%5D=49&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=Galena+%28Trenton%29+Limestone">Galena (Trenton) Limestone</a>
<a href="/items/browse?advanced%5B0%5D%5Belement_id%5D=49&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=Cliffs">Cliffs</a>
Calvin, S. (Samuel), 1840-1911
Photographs scanned using Epson Expression 1680 scanner at 300 ppi, 8-bit greyscale.
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
1895/1910
2005-08-10
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.
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
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Cliff of Trenton Limestone, crowned with pines, Cold Water Spring Preserve, Bluffton, Iowa, late 1890s or early 1900s
<a href="/items/browse?advanced%5B0%5D%5Belement_id%5D=49&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=Geology">Geology</a>
<a href="/items/browse?advanced%5B0%5D%5Belement_id%5D=49&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=Cold+Water+Spring+State+Preserve+%28Bluffton%2C+Iowa%29">Cold Water Spring State Preserve (Bluffton, Iowa)</a>
<a href="/items/browse?advanced%5B0%5D%5Belement_id%5D=49&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=United+States+--+Iowa+--+Winneshiek+County+--+Bluffton">United States -- Iowa -- Winneshiek County -- Bluffton</a>
<a href="/items/browse?advanced%5B0%5D%5Belement_id%5D=49&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=190-">190-</a>
<a href="/items/browse?advanced%5B0%5D%5Belement_id%5D=49&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=Paleozoic+--+Ordovician">Paleozoic -- Ordovician</a>
<a href="/items/browse?advanced%5B0%5D%5Belement_id%5D=49&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=Trenton+Limestone">Trenton Limestone</a>
<a href="/items/browse?advanced%5B0%5D%5Belement_id%5D=49&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=Cliffs">Cliffs</a>
<a href="/items/browse?advanced%5B0%5D%5Belement_id%5D=49&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=Pines">Pines</a>
Bluffton, above; top of bluff at Cold Spring
Calvin, S. (Samuel), 1840-1911
Photographs scanned using Epson Expression 1680 scanner at 300 ppi, 8-bit greyscale.
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
1895/1910
2005-08-10
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.
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
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Profile of Painted Rock, Waukon Junction, Iowa, late 1890s or early 1900s
<a href="/items/browse?advanced%5B0%5D%5Belement_id%5D=49&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=Geology">Geology</a>
<a href="/items/browse?advanced%5B0%5D%5Belement_id%5D=49&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=United+States+--+Iowa+--+Allamakee+County+--+Waukon+Junction">United States -- Iowa -- Allamakee County -- Waukon Junction</a>
<a href="/items/browse?advanced%5B0%5D%5Belement_id%5D=49&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=190-">190-</a>
<a href="/items/browse?advanced%5B0%5D%5Belement_id%5D=49&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=Paleozoic+--+Ordovician">Paleozoic -- Ordovician</a>
<a href="/items/browse?advanced%5B0%5D%5Belement_id%5D=49&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=Cliffs">Cliffs</a>
Calvin, S. (Samuel), 1840-1911
Photographs scanned using Epson Expression 1680 scanner at 300 ppi, 8-bit greyscale.
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
1895/1910
2005-08-10
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.
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
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Photographs; Dry collodion negatives
cpc37.jpg
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Quarry in Galena Limestone, Twin Springs, Iowa, late 1890s or early 1900s
<a href="/items/browse?advanced%5B0%5D%5Belement_id%5D=49&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=Geology">Geology</a>
<a href="/items/browse?advanced%5B0%5D%5Belement_id%5D=49&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=United+States+--+Iowa+--+Dubuque+County+--+Twin+Springs">United States -- Iowa -- Dubuque County -- Twin Springs</a>
<a href="/items/browse?advanced%5B0%5D%5Belement_id%5D=49&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=190-">190-</a>
<a href="/items/browse?advanced%5B0%5D%5Belement_id%5D=49&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=Paleozoic+--+Ordovician">Paleozoic -- Ordovician</a>
<a href="/items/browse?advanced%5B0%5D%5Belement_id%5D=49&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=Galena+Limestone">Galena Limestone</a>
<a href="/items/browse?advanced%5B0%5D%5Belement_id%5D=49&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=Quarrying">Quarrying</a>
Calvin, S. (Samuel), 1840-1911
Photographs scanned using Epson Expression 1680 scanner at 300 ppi, 8-bit greyscale.
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
1895/1910
2005-08-10
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.
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
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Photographs; Dry collodion negatives
cpc80.jpg
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https://digital.lib.uiowa.edu/
Salient ridge and cliff of Galena Limestone, Iowa, late 1890s or early 1900s
<a href="/items/browse?advanced%5B0%5D%5Belement_id%5D=49&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=Geology">Geology</a>
<a href="/items/browse?advanced%5B0%5D%5Belement_id%5D=49&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=United+States+--+Iowa+--+Dubuque+County">United States -- Iowa -- Dubuque County</a>
<a href="/items/browse?advanced%5B0%5D%5Belement_id%5D=49&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=190-">190-</a>
<a href="/items/browse?advanced%5B0%5D%5Belement_id%5D=49&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=Paleozoic+--+Ordovician">Paleozoic -- Ordovician</a>
<a href="/items/browse?advanced%5B0%5D%5Belement_id%5D=49&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=Galena+Limestone">Galena Limestone</a>
<a href="/items/browse?advanced%5B0%5D%5Belement_id%5D=49&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=Cliffs">Cliffs</a>
Calvin, S. (Samuel), 1840-1911
Photographs scanned using Epson Expression 1680 scanner at 300 ppi, 8-bit greyscale.
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
1895/1910
2005-08-10
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.
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
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Photographs; Dry collodion negatives
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Weathering Galena Limestone, Dubuque, Iowa, late 1890s or early 1900s
<a href="/items/browse?advanced%5B0%5D%5Belement_id%5D=49&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=Geology">Geology</a>
<a href="/items/browse?advanced%5B0%5D%5Belement_id%5D=49&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=United+States+--+Iowa+--+Dubuque+County+--+Dubuque">United States -- Iowa -- Dubuque County -- Dubuque</a>
<a href="/items/browse?advanced%5B0%5D%5Belement_id%5D=49&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=190-">190-</a>
<a href="/items/browse?advanced%5B0%5D%5Belement_id%5D=49&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=Paleozoic+--+Ordovician">Paleozoic -- Ordovician</a>
<a href="/items/browse?advanced%5B0%5D%5Belement_id%5D=49&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=Galena+Limestone">Galena Limestone</a>
Calvin, S. (Samuel), 1840-1911
Photographs scanned using Epson Expression 1680 scanner at 300 ppi, 8-bit greyscale.
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
1895/1910
2005-08-10
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.
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
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Photographs
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Effects of weathering on a bluff of limestone illustrating thin bedding, etc., Iowa, late 1890s or early 1900s
<a href="/items/browse?advanced%5B0%5D%5Belement_id%5D=49&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=Geology">Geology</a>
<a href="/items/browse?advanced%5B0%5D%5Belement_id%5D=49&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=United+States+--+Iowa+--+Allamakee+County">United States -- Iowa -- Allamakee County</a>
<a href="/items/browse?advanced%5B0%5D%5Belement_id%5D=49&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=190-">190-</a>
<a href="/items/browse?advanced%5B0%5D%5Belement_id%5D=49&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=Paleozoic+--+Ordovician">Paleozoic -- Ordovician</a>
<a href="/items/browse?advanced%5B0%5D%5Belement_id%5D=49&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=Galena+Limestone">Galena Limestone</a>
<a href="/items/browse?advanced%5B0%5D%5Belement_id%5D=49&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=Cliffs">Cliffs</a>
Located in Twp. 96, R. VI, Section 17, S.E. gr., S.E. 1/4.
Calvin, S. (Samuel), 1840-1911
Photographs scanned using Epson Expression 1680 scanner at 300 ppi, 8-bit greyscale.
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
1895/1910
2005-08-10
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.
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
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Photographs; Dry collodion negatives
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Galena beds located one mile below Specht's Ferry, Iowa, late 1890s or early 1900s
<a href="/items/browse?advanced%5B0%5D%5Belement_id%5D=49&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=Geology">Geology</a>
<a href="/items/browse?advanced%5B0%5D%5Belement_id%5D=49&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=United+States+--+Iowa+--+Dubuque+County+--+Specht%27s+Ferry">United States -- Iowa -- Dubuque County -- Specht's Ferry</a>
<a href="/items/browse?advanced%5B0%5D%5Belement_id%5D=49&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=190-">190-</a>
<a href="/items/browse?advanced%5B0%5D%5Belement_id%5D=49&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=Paleozoic+--+Ordovician">Paleozoic -- Ordovician</a>
<a href="/items/browse?advanced%5B0%5D%5Belement_id%5D=49&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=Galena+beds">Galena beds</a>
Calvin, S. (Samuel), 1840-1911
Photographs scanned using Epson Expression 1680 scanner at 300 ppi, 8-bit greyscale.
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
1895/1910
2005-08-10
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.
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
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Photographs
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Cross-bedding with dark streaks due to glauconite, Lansing, Iowa, late 1890s or early 1900s
<a href="/items/browse?advanced%5B0%5D%5Belement_id%5D=49&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=Geology">Geology</a>
<a href="/items/browse?advanced%5B0%5D%5Belement_id%5D=49&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=United+States+--+Iowa+--+Allamakee+County+--+Lansing">United States -- Iowa -- Allamakee County -- Lansing</a>
<a href="/items/browse?advanced%5B0%5D%5Belement_id%5D=49&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=190-">190-</a>
<a href="/items/browse?advanced%5B0%5D%5Belement_id%5D=49&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=Paleozoic+--+Ordovician">Paleozoic -- Ordovician</a>
<a href="/items/browse?advanced%5B0%5D%5Belement_id%5D=49&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=St.+Croix+sandstone">St. Croix sandstone</a>
Calvin, S. (Samuel), 1840-1911
Photographs scanned using Epson Expression 1680 scanner at 300 ppi, 8-bit greyscale.
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
1895/1910
2005-08-10
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.
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
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Photographs; Dry collodion negatives
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Thinning of Devonian beds, Portland, Iowa, late 1890s or early 1900s
<a href="/items/browse?advanced%5B0%5D%5Belement_id%5D=49&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=Geology">Geology</a>
<a href="/items/browse?advanced%5B0%5D%5Belement_id%5D=49&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=United+States+--+Iowa+--+Cerro+Gordo+County+--+Portland">United States -- Iowa -- Cerro Gordo County -- Portland</a>
<a href="/items/browse?advanced%5B0%5D%5Belement_id%5D=49&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=190-">190-</a>
<a href="/items/browse?advanced%5B0%5D%5Belement_id%5D=49&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=Paleozoic+--+Devonian">Paleozoic -- Devonian</a>
Calvin, S. (Samuel), 1840-1911
Photographs scanned using Epson Expression 1680 scanner at 300 ppi, 8-bit greyscale.
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
1895/1910
2005-08-10
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.
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
View related article: http://cdm.lib.uiowa.edu/u?/digs,6633
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