Browsing by Subject "central Minnesota"
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Item Bulletin No. 40. Pleistocene Geology of the Randall Region, Central Minnesota(Minnesota Geological Survey, 1961) Schneider, Allan F.The systematic investigation of the glacial history of Minnesota goes back sixty to eighty years, to the days of N. H. Winchell and Warren Upham, who were as competent in the interpretation of the terrain and surface deposits as they were in working out the relations of the bedrock. A resurvey of the glacial history of the State was completed just before World War I by Frank Leverett of the U.S. Geological Survey, whose comprehensive report, however, was not published until 1932. Leverett had already mapped most of the other states in the Great Lakes region, so the picture for Minnesota fitted consistently with the others. Each successive generation of geologists, however, has different approaches, based on new techniques and on increased understanding of geological processes. After World War II the Minnesota Geological Survey initiated a program of re-examination of the glacial deposits of the State, which has an exceptionally fine record of the complex interactions of ice lobes that invaded the area from different directions. The recent Bulletin 39 on the Geology of Cook County incorporated a modern study of the glacial history of the northeastern corner of the State by Robert P. Sharp, and the present Bulletin by Allan F. Schneider describes a detailed study of an area in central Minnesota northwest of Little Falls. To this problem Dr. Schneider brought the necessary energy and enthusiasm to do the detailed field work required to unravel the complex relationships. In work on a problem of this sort a broad background on the region as a whole is necessary. This was furnished by H. E. Wright, Jr., who has supervised the work on the Pleistocene geology of Minnesota since 1947. Although the field work was supported by the Minnesota Geological Survey, it should be emphasized that untold hours were spent by Dr. Schneider on laboratory work and on drafting and writing the report while he was otherwise employed. The Minnesota Geological Survey is indebted to both Dr. Schneider and Professor Wright for their devoted service.Item Guidebook 22. Field Trip Guidebook Landforms, Stratigraphy, and Lithologic Characteristics of Glacial Deposits in Central Minnesota(Minnesota Geological Survey, 2006) Knaeble, A.R.This guidebook was prepared for the 50th Midwest Friends of the Pleistocene Field Conference, sponsored by the Minnesota Geological Survey and held at St. John's University on June 4-6, 2004. The purpose of this guidebook is to provide conference participants with an up-to-date general summary of the glacial geology of central Minnesota and a comprehensive reference list of previous research completed in the area. There are a number of reasons why we were motivated to host the Friends of the Pleistocene in central Minnesota. First, over the last 10 years the Minnesota Geological Survey has completed numerous mapping projects in the central Minnesota area (Steams, Pope, and Crow Wing County atlases; the Otter Tail regional hydrogeological assessment; and the USGS Statemap St. Cloud, Baxter, Brainerd, and Gull Lake quadrangle maps), and is in the process of completing mapping projects in Todd, Traverse, and Grant Counties. The large volume of data (samples and descriptions from outcrops and drill holes) collected from these projects has allowed us to evaluate the work done by previous researchers and contribute new insights and interpretations. Second, in 1954 Herb Wright, AI Schneider, and Harold Ameman led the 5th Midwest Friends of the Pleistocene field trip in central Minnesota. We will revisit the area, on this 50th anniversary of that trip, to examine how interpretations have changed and evolved. The guidebook will use a simple, direct approach to summarize the region's glacial geology, similar to that used in 1954. It is our intention to pay tribute to the accomplishments of Herb and AI during the field trip and banquet. We will also acknowledge other researchers who, over the last 50 years, have made contributions to the glacial geology of central Minnesota. Third, we would like to discuss how mapping techniques and technology have changed in the last 50 years. We will examine which techniques have been most effective in understanding the complex stratigraphy of central Minnesota. Finally, field exposures were selected to stimulate interest and discussion about the following glacial topics: erosion, transport, and deposition of source-area materials; processes involved in drumlin formation; the relationship between ice dynamics and glacial landforms; processes important in the formation of the St. Croix moraine; and the challenges of interpreting thick, complex drift stratigraphy. These stops highlight geomorphic features, stratigraphic relationships, and specific unit characteristics (lithology, color, etc.) in an attempt to provide an overview of the glacial geology of this region.Item Information Circular 23. Scientific Core Drilling in Central Minnesota: Summary of Lithologic and Geochemical Results(Minnesota Geological Survey, 1986) Southwick, D.L.; Meyer, Gary N.; Mills, Sarah J.In 1980 the Minnesota Geological Survey (MGS) began a program of scientific test drilling for the purpose of acquiring a better understanding of the complex Precambrian bedrock of central Minnesota. The areas investigated in this project contain very few bedrock outcrops; the Precambrian rocks are thickly covered by unconsolidated surficial deposits of Quaternary age, and the only way they can be directly sampled and studied is by core drilling. This circular is an essentially uninterpreted summary of basic lithologic and chemical data derived from the scientific core drilling project.Item Second Homes in Minnesota: A Profile of Seasonal Residents and their Impacts in Central and West Central Minnesota(University of Minnesota Extension, 2014) Pesch, Ryan; Bussiere, Merritt