Illinoian drift exposed in Chicago, Milwaukee & Gary railway cut 7 miles south of Rockford; Illinois, 1908.
Dates
Date Taken
1908-06-22
Summary
Album caption: Illinoian drift exposed in Chicago, Milwaukee & Gary railway cut 7 miles south of Rockford; the lower part is dense calcareous unmodified boulder clay; upper 8 feet is gravelly leached and oxidized drift, all limestone pebbles and limestone flour are removed from latter by solution. Winnebago County, Wisconsin. June 22, 1908. Handwritten note on album caption: No. 388. Plate 18-B in U.S. Geological Survey. Professional paper 106. 1918.
Summary
Album caption: Illinoian drift exposed in Chicago, Milwaukee & Gary railway cut 7 miles south of Rockford; the lower part is dense calcareous unmodified boulder clay; upper 8 feet is gravelly leached and oxidized drift, all limestone pebbles and limestone flour are removed from latter by solution. Winnebago County, Wisconsin. June 22, 1908.
Handwritten note on album caption: No. 388. Plate 18-B in U.S. Geological Survey. Professional paper 106. 1918.
Available in the U.S. Geological Survey Denver Library Photographic Collection, Alden, W.C. Collection.
Rights
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