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 "description": "Citation:\n\nCitation Information:\n\nOriginator: Michigan Department of Environmental Quality (MDEQ) - Geologic Survey Division\nPublication Date: 1987\nTitle: Bedrock Geology\nPublication Information:\n\nPublication Place: Lansing, MI\nPublisher: MDEQ\n\nDescription:\n\nAbstract: Digital version of Bedrock Geology map of Michigan.\nPurpose: State-wide planning, evaluation, or management.\nSupplemental Information:\n\nHard copy maps of a scale 1\" = 5280' (1:63360) were digitized by the Michigan Resource Information System (MIRIS) using Microstation software. These files were cataloged by county then merged into regional files based on State Plane zones. Edge matching took place along county boundaries. Microstation design files were converted to Arc/Info coverages using the IGDS command. Coverages were cleaned and built into polygons. Arc/Info data was cross referenced with original design files using ArcView software, and check plots were produced at a scale of 1:500000. Errors were corrected using ArcTools. Coverages were re-projected to the Michigan Georef coordinate system (Oblique Mercator) using the Arc/Info PROJECT command. All three zonal coverages were combined using the UNION command, then the attribution was combined into the respective common fields. Corrections made along state plane line for zones 2 and 3 in the Lower Peninsula using ArcTools.\n\nTime Period of Content:\n\nTime Period Information:\n\nSingle Date/Time:\n\nCalendar Date: Unknown\nTime of Day: Unknown\n\nCurrentness Reference: publication date\n\nStatus:\n\nProgress: Complete\nMaintenance and Update Frequency: As needed\n\nSpatial Domain:\n\nBounding Coordinates:\n\nWest Bounding Coordinate: 90.38603812\nEast Bounding Coordinate: 82.38965295\nNorth Bounding Coordinate: 48.27935311\nSouth Bounding Coordinate: 41.69331783\n\nKeywords:\n\nTheme:\n\nTheme Keyword Thesaurus: none\nTheme Keyword: bedrock\nTheme Keyword: geology\n\nPlace:\n\nPlace Keyword Thesaurus: none\n\nAccess Constraints: none\nUse Constraints: none\nPoint of Contact:\n\nContact Information:\n\nContact Organization Primary:\n\nContact Organization: MDNR, Land and Mineral Services Division, Resource Mapping and Aerial Photography Section (RMAP)\nContact Person: Mike Donovan\n\nContact Address:\n\nAddress Type: mailing and physical address\nAddress: P.O. Box 30448, Stephens T. Mason Building\nCity: Lansing\nState or Province: MI\nPostal Code: 48909-7984\nCountry: USA\n\nContact Voice Telephone: 517-241-2254\nContact Facsimile Telephone: 517-335-3264\nHours of Service: 8 a.m. - 5 p.m. EST\n\nData Set Credit: Michigan Department of Environmental Quality - Geological Survey Division\nSecurity Information:\n\nSecurity Classification System: unclassified\n\nNative Data Set Environment: Windows NT, Arc/Info 7.2.1, ArcView 3.2\nCross Reference:\n\nCitation Information:\n\nOriginator: Michigan Department of Environmental Quality - Geological Survey Division\nPublication Date: 1987\nTitle: Bedrock Geology of Southern Michigan\nOther Citation Details: Used legend to develop coding scheme.\n\nCross Reference:\n\nCitation Information:\n\nOriginator: Michigan Department of Environmental Quality - Geological Survey Division\nPublication Date: 1987\nTitle: Bedrock Geology of Northern Michigan\nOther Citation Details: Used legend to develop coding scheme.\n\nCross Reference:\n\nCitation Information:\n\nOriginator: MDNR- Land and Mineral Services Division, RMAP Section, Geologic Resource Mapping Unit\nPublication Date: 1995\nTitle: Microstation Design Files\nGeospatial Data Presentation Form: Digital files\nPublication Information:\n\nPublication Place: Lansing, MI\n\nOther Citation Details: Scale 1:63360 (1\"= 5280')",
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 "title": "Bedrock Geology of Michigan",
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