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This is a report of geochemical data from various media collected on Isle Royale, a large island in northeastern Lake Superior. Isle Royale became a national park in 1940 and was designated as a wilderness area in 1976. USGS sampling began in 1996 as part of a larger project on the Midcontinent Rift in the Lake Superior region. Data are given in nine Microsoft Excel spreadsheets. All the data are newly acquired by the USGS. |
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| Map showing the location of study area and distribution of soil and lichen sample sites for which analyses are reported. |
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| Map showing the location of study area and distribution of bedrock and mineralized rock sample sites for which analyses are reported. |
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FILES
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DESCRIPTION
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Word document format of open file report
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Portable Document Format (PDF) of open file report
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Metadata in text format
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FILES
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DESCRIPTION
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Geochemical analyses of A-horizon and E-horizon mineral soils
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Geochemical analyses of C-horizon mineral soils
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Geochemical analyses of sediment lake core collected from Lake Richie, Isle Royale
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Geochemical analyses of four lichen species
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Geochemical analyses of rocks, sediment, and stamp sands with minor native copper mineralization collected from mineralized veins and mine dumps
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Geochemical analyses of organic O-horizon organic material
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Geochemical analyses of sediment lake core collected from Sargent Lake, Isle Royale
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Geochemical analyses of sandstone and conglomerate matrix collected from the Copper Harbor Formation
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Geochemical analyses of basalt, andesite and rhyolite from the Portage Lake Volcanics exposed on Isle Royale
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FILES
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DESCRIPTION
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Adobe Illustrator (ai) map showing the location of study area and distribution of soil and lichen sample sites for which analyses are reported.
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Portable Document Format (PDF) map showing the location of study area and distribution of soil and lichen sample sites for which analyses are reported.
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Adobe Illustrator (ai) map showing the location of study area and distribution of bedrock and mineralized sample sites for which analyses are reported.
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Portable Document Format (PDF) map showing the location of study area and distribution of bedrock and mineralized sample sites for which analyses are reported.
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Adobe Acrobat Reader is required to view Portable Document Files (PDF).
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For questions, please contact Laurel G. Woodruff or William F. Cannon.