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Please use this identifier to cite or link to this item: http://hdl.handle.net/11299/56990

Title: Bulletin No. 33. The Geology of the Duluth Metropolitan Area
Authors: Schwartz, George M.
Keywords: geology
Duluth
Minnesota Geological Survey
mapping
Issue Date: 1949
Publisher: Minnesota Geological Survey
Series/Report no.: Bulletin
33
Abstract: The Duluth area is one of the most interesting parts of Minnesota. It is also a critical area in determining the relationship between various rocks of Keweenawan age in the Lake Superior district. The area, therefore, has received more or less detailed study from time to time. Most of these studies, however, referred only to special phases of the geology of the region and no general description has appeared since Winchell published volume four of his final report, which contains a special chapter on the Duluth area. The object of this project was to map the metropolitan area in as much detail as practicable, accompanied by such laboratory studies as seemed desirable. This work was followed by a compilation of all available geological knowledge on the Duluth area into a readable summary for interested residents, as well as for engineers and others who need geological knowledge of the area in their work. The field work was begun in 1937, and the major portion of the field seasons through 1940 was spent in the Duluth area and adjacent portions of the region. Other projects, mostly a result of the war, interfered with the completion of the field work and compilation of the results. The writer is indebted to many persons for innumerable courtesies during the work. The engineering staffs of St. Louis County and the city of Duluth furnished maps and information that aided greatly in the work. Dr. A. E. Sandberg and Mr. Ray Knutsen each served as field assistant for two years and much of the credit for the field work is due to them. Dr. Sandberg had previously spent a great deal of time on field work in connection with a thesis presented to the University of Cincinnati. Professor Thomas W. Chamberlin of the University of Minnesota, Duluth Branch, kindly prepared the chapter on economic geography which is published under his name. The writer is especially indebted to his colleague, Professor Frank F. Grout, for continued suggestions and advice.
Description: Nineteen map inserts as pdfs, scales from 1:20,000 to 1:250,000.
URI: http://purl.umn.edu/56990
Appears in Collections:Bulletin of the Minnesota Geological and Natural History Survey (1887-2000)

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File Description SizeFormat
MGS_B_33.pdfBulletin 336.7 MBPDFView/Open
bull33_pl19[1].pdfPlate 19764.66 kBPDFView/Open
bull33_pl18[1].pdfPlate 18798.72 kBPDFView/Open
bull33_pl17[1].pdfPlate 17819.85 kBPDFView/Open
bull33_pl16[1].pdfPlate 16797.59 kBPDFView/Open
bull33_pl15[1].pdfPlate 15764.23 kBPDFView/Open
bull33_pl14[1].pdfPlate 14876.03 kBPDFView/Open
bull33_pl13[1].pdfPlate 13612.64 kBPDFView/Open
bull33_pl12[1].pdfPlate 12873.88 kBPDFView/Open
bull33_pl11[1].pdfPlate 111.77 MBPDFView/Open
bull33_pl10[1].pdfPlate 10834.7 kBPDFView/Open
bull33_pl9[1].pdfPlate 9866.85 kBPDFView/Open
bull33_pl8[1].pdfPlate 81.22 MBPDFView/Open
bull33_pl7[1].pdfPlate 7819.08 kBPDFView/Open
bull33_pl6[1].pdfPlate 6934.78 kBPDFView/Open
bull33_pl5[1].pdfPlate 5497.44 kBPDFView/Open
bull33_pl4[1].pdfPlate 4820.1 kBPDFView/Open
bull33_pl3[1].pdfPlate 3342.65 kBPDFView/Open
bull33_pl2[1].pdfPlate 2344.91 kBPDFView/Open
bull33_pl1[1].pdfPlate 1399.65 kBPDFView/Open

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