Browsing by Subject "mapping"

Now showing 1 - 20 of 27
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    Building Permits Monitor Development and Land Use Change in Wright County.
    (Center for Urban and Regional Affairs, University of Minnesota, 1979) Craig, William J.
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    Bulletin No. 33. The Geology of the Duluth Metropolitan Area
    (Minnesota Geological Survey, 1949) Schwartz, George M.
    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.
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    C-41, Geologic Atlas of Hubbard County, Minnesota
    (Minnesota Geological Survey, 2018) Lusardi, Barbara A
    A County Geologic Atlas project is a study of a county's geology, and its mineral and ground-water resources. The information collected during the project is used to develop maps, data-base files, and reports. This same information is also produced as digital files for use with computers. The map information is formatted as geographic information system (GIS) files with associated data bases. The maps and reports are also reproduced as portable document files (PDFs) that can be opened on virtually any computer using the free Acrobat Reader from Adobe.com.
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    C-45, Geologic Atlas of Hennepin County, Minnesota
    (Minnesota Geological Survey, 2018-12) Steenberg, Julia R.; Bauer, Emily J; Chandler, V.W.; Retzler, Andrew J; Berthold, Angela J; Lively, Richard S
    A County Geologic Atlas project is a study of a county's geology, and its mineral and ground-water resources. The information collected during the project is used to develop maps, data-base files, and reports. This same information is also produced as digital files for use with computers. The map information is formatted as geographic information system (GIS) files with associated data bases. The maps and reports are also reproduced as portable document files (PDFs) that can be opened on virtually any computer using the free Acrobat Reader from Adobe.com. Note: Bedrock surfaces rasters and the Atlas Users guide were updated (updated_files.zip) 04/01/19.
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    C-58, Geologic Atlas of Lincoln County, Minnesota
    (Minnesota Geological Survey, 2023) Mayer, Jordan A; Bradley, Margeurite C; Retzler, Andrew J; Severson, Allison R; Jirsa, Mark A; Chandler, V.W.; Conrad, Daniel R; Gowan, Angela S; Block, Amy Radakovich; Hamilton, Jacqueline D
    A County Geologic Atlas project is a study of a county's geology, and its mineral and ground-water resources. The information collected during the project is used to develop maps, data-base files, and reports. This same information is also produced as digital files for use with computers. The map information is formatted as geographic information system (GIS) files with associated data bases. The maps and reports are also reproduced as portable document files (PDFs) that can be opened on virtually any computer using the free Acrobat Reader from Adobe.com.
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    C-65, Geologic Atlas of Lac qui Parle County, Minnesota
    (2023) Bauer, Emily J; Hirsch, Aaron C; Steenberg, Julia R; Severson, Allison R; Boerboom, Terrence J; Radke, Angela J; Lively, R. S.
    A County Geologic Atlas project is a study of a county's geology, and its mineral and ground-water resources. The information collected during the project is used to develop maps, data-base files, and reports. This same information is also produced as digital files for use with computers. The map information is formatted as geographic information system (GIS) files with associated data bases. The maps and reports are also reproduced as portable document files (PDFs) that can be opened on virtually any computer using the free Acrobat Reader from Adobe.com.
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    Computer Applications in Land Use Mapping and the Minnesota Land Management Information System.
    (Center for Urban and Regional Affairs, and Department of Geography, University of Minnesota., 1973) Hsu, Mei Ling et al.
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    ERTS-1 Applications to Minnesota Land Use Mapping. Report No. 3.
    (Center for Urban and Regional Affairs, University of Minnesota and Minnesota State Planning Agency., 1973) Brown, Dwight et al.
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    From Compass to Drone: The Evolving Role of Magnetics in Mapping the Geology and Ore Deposits Of the Lake Superior Region: 1830-2022
    (Minnesota Geological Survey, 2022) Hinze, William J
    The Lake Superior region, the “Birthplace of North American Precambrian Geology,” is noted for its world-class mineral resources, especially its native copper and iron ore deposits, and its classic bedrock of Archean and Proterozoic orogenic belts and the exposures of rocks of the Midcontinent Rift System. The magnetic method of mapping the region’s ore deposits and bedrock geology has been used for nearly two centuries because of limitations in the exposure of the Precambrian bedrock in the region. For the first century magnetic mapping was directed primarily at the identification of regions favorable for iron and copper ore deposits using simple magnetic needle instrumentation. Initially instrumentation was limited to the use of the dial (sun) compass and used mainly for exploration of hard, magnetite-rich iron ore deposits. With the introduction of the dip needle, a counterbalanced magnetic needle oscillating vertically in the magnetic meridian, to the Lake Superior region likely in 1865 by T.B. Brooks, magnetic mapping was no longer restricted to the difficult to interpret magnetic field angular variations.
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    Geologic Mapping Forum 22/23 Abstracts
    (Minnesota Geological Survey, 2023) Thorleifson, Harvey
    The Geologic Mapping Forum in Minneapolis in 2018 and 2019 was attended by ~100 geologic map authors, program managers, and allied professionals from geological surveys and associated agencies, who met to discuss the status and future of geological mapping in the USA. Due to the coronavirus pandemic, the 2020 Geologic Mapping Forum planned for April 7th to 9th, 2020, was not held. It therefore was decided that GMF Online would be held as meetings of about two hours duration on Thursdays at Noon Central, about once per month, from early autumn until spring, in 2020/2021, and again in 2021/2022, and in 2022/2023. The intended GMF audience is geologic map authors and program managers, and the focus again was on geology rather than funding or GIS. Optional abstracts for the 20-minute invited talks were requested, and are presented here.
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    GEOPHYSICAL AND PETROLOGIC ADVANCES IN UNDERSTANDING THE TAUNTON-BELT WEDGE, AN ARCHEAN TERRANE WITHIN THE MINNESOTA RIVER VALLEY SUBPROVINCE OF THE SUPERIOR CRATON, NORTH-CENTRAL U.S.A.
    (2023) Southwick, David L; Chandler, V.W.; Jirsa, Mark A; Boerboom, Terrence J
    The Taunton-belt wedge, defined herein, is an unexposed fault-bounded Archean terrane located within the Morton block of the Minnesota River Valley (MRV) subprovince of the Superior Craton. It is bounded on the north by the Yellow Medicine shear zone (YMSZ), a prominent regional structure that extends from the west margin of the Paleoproterozoic Penokean orogen in Minnesota to the east margin of the Paleoproterozoic Trans-Hudson orogen in South Dakota. The south boundary of the wedge is a less distinct curving fault zone that splays west–southwest from the YMSZ in south-central Minnesota and rejoins it in eastern South Dakota. The interior geology of the wedge is poorly known, owing to continuous cover of the Precambrian basement by Phanerozoic strata and Pleistocene glacial deposits. Regional aeromagnetic and ground gravity mapping indicate a broad belt of mafic metavolcanic and related rocks in roughly the northern half of the wedge, and many granitoid intrusions in the southern half. Geophysical signatures characteristic of layered gneiss, such as those observed over known gneiss elsewhere in the Morton block, are minor to absent.
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    The Gwayakosijigan (Compass) Project: A food system mapping collaboration of the Fond du Lac Band of Lake Superior Chippewa and University of Minnesota Extension
    (2013) Walsh, Amy; Hamid, Saleema; Wilsey, David
    In recent years, Native American communities in Minnesota have rallied around the widespread, societal health challenges of obesity, heart disease, and diabetes. Native communities recognize the rapid and alarming ascendance of these ailments -- which generally afflict Native communities at a greater proportion than the general population -- as an affront to some of the communities’ strongest cultural institutions and, in some cases, as another trauma resulting from the incursion of non-Native ways of being. Tribal nutrition programs promote healthy food knowledge and preparation; garden programs encourage and support healthy food production; and community members employ varied means to showcase traditional food practices for staple foods central to cultural identity. These and other interventions to improve nutritional knowledge, cooking skills, and access to healthy foods have met with varying degrees of success, making next steps difficult to ascertain. This study was designed improve understanding the factors that play into individual food related decisions and behaviors; its purpose to inform future community-scale interventions related to health and food systems. We led participants through a process of making personal food system maps and then followed up with those individuals to discuss their food-related actions and decisions. We learned that participants perceived that they were generally able to make decisions about food as they wished. Many participants emphasized the importance of natural, wild food sources and food procurement strategies as invaluable means to connect with nature, family, friends, and culture. Social and family networks were active when tangible or financial resources were limited. Indeed, for those who felt limited in their food decisions, financial constraints posed the greatest barrier, followed by constraints related to owned assets, such as food preparation equipment or vehicles. Moreover, grief, loss, and other life stresses often interfered with individual’s ability to strategize and adapt to financial or other limitations. Our preliminary results suggest several key directions for future inquiry and programming. This study was based on participant’s perceptions; future assessment should strive to determine whether community members’ desired food choices are, in fact, healthy. Also, relatively high availability of healthy foods in the area suggests that creation of new food access venues is unlikely to change eating habits without additional, related interventions. Finally, participant comments suggest that culturally relevant food production and procurement represent a feasible frame for food and nutrition education and that major life phase changes offer opportunities for accessing interested community members.
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    Mapping Twin Cities, Minnesota Metropolitan Area Land Use with ERTS-1 Imagery. Wall Map, Twin Cities Metropolitan Area Land Use, 1974.
    (Center for Urban and Regional Affairs, University of Minnesota., 1975) Brown, Dwight et al.
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    Minnesota at a Glance Mapping Subsurface Sedimentary Rocks
    (Minnesota Geological Survey, 1995) Mossler, J.
    The two maps in Figure 1 are illustrations of the bedrock geology of Rice County. If both maps show the distribution of the same rocks, why are they so different? The geology has not changed in the nearly thirty years separating these two maps. It is our understanding of the geology that has changed. Prior to 1966, efforts to collect information on the subsurface geology were not organized and the distribution of data was spotty. Since the 1970 's, much greater emphasis has been placed on the systematic collection and preservation of data from water wells and test holes, although outcrops still provide much of our information about bedrock geology. Collection of subsurface geologic information is particularly important to bedrock mapping in Minnesota because much of the state is covered with thick deposits of glacial drift that hide most of the bedrock. This report outlines the data and methods used for mapping the relatively flat-lying sedimentary rock formations found in southeastern Minnesota. These rocks were deposited as sediments in oceans, and over millions of years became the solid rock formations we find today. Similar rock types are present in the northwestern comer of the state.
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    Minnesota Land Management Information System Ten Years Later.
    (Center for Urban and Regional Affairs, University of Minnesota, 1986) Craig, William J.
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    OFR10-02, Preliminary Bedrock Geologic Map of Minnesota
    (Minnesota Geological Survey, 2010) Jirsa, M.A.; Bauer, E.J.; Boerboom, T.J.; Chandler, V.W.; Lively, R.S.; Mossler, J.H.; Runkel, A.C.; Setterholm, D.R.
    The geologic map and some associated digital map files that are part of this Open File Report have been superseded by the map and digital data that comprise S-21 in the State Map Series.
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    OFR10-05, Preliminary Bedrock Geologic Map of the Grand Marais 7.5' quadrangle, Cook County, Minnesota
    (Minnesota Geological Survey, 2010) Boerboom, T.J.; Green, J.C.
    Bedrock geologic map of Grand Marais 7.5' quadrangle
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    OFR13-02, Three-Dimensional Geological Mapping
    (2013) Thorleifson, Harvey; Berg, Dick; Russell, Hazen
    This workshop is designed for those constructing 3D geological maps and numerical models. Our objective is to bring together people dealing with large datasets, and who must integrate variable quality data with high quality data to construct 3D geological models for application such as hydrogeology, engineering, and energy resource assessment. Topics include (1) methods of model construction, (2) managing diverse data of variable quality, (3) ensuring data interoperability, (4) visualization tools, and (5) interaction between mappers, hydrogeologists, energy and mineral resource geologists, engineering geologists, and engineers. The emphasis is on deposits that host potable groundwater, as well as sedimentary basins as a whole.
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    OFR19-1, Geologic Mapping Forum 2019 Abstracts
    (Minnesota Geological Survey, 2019) Thorleifson, L Harvey
    At the Geologic Mapping Forum in Minneapolis from April 10th to 12th, 2019, ~100 geological map authors, program managers and allied professionals from geological surveys and associated agencies met to discuss the status and future of geologic mapping in the USA and neighboring countries. The meeting was hosted by the Minnesota Geological Survey on the University of Minnesota campus. The meeting was held at the Humphrey School of Public Affairs on the West Bank campus, in the Humphrey School Conference Center at 301 19th Avenue South, Minneapolis, MN 55455. Participants were invited to present a 30-minute plenary or 15-minute talk, or a poster, and submitted a 1 to 2-page abstract published in this Open File. The meeting opened with registration and a reception on Tuesday evening followed by conference sessions beginning at 8:30 AM Wednesday and ending 2:30 PM Friday. Regional organization business meetings followed on Friday afternoon and Saturday.