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Index of unpublished, archival resources, that may aid researchers in locating critical mineral deposits in Wisconsin. The approximately 2500 items in this collection are from eight major and two smaller collections. The item title contains the focus area to which the item pertains. The resources listed are stored at the WGNHS office in Madison, Wisconsin, and though much of this collection is still on paper only, any items will be made available to researchers upon request.
Approximately 23,000 data points showing depth to bedrock in Wisconsin in an ArcGIS Online map. Data points are based on water well drilling records.
Collection of 20 geologic maps which are now available in geodatabase (.gdb) format following the USGS Geologic Mapping Schema (GeMS). Current collection consists of 16 county maps, Quaternary, Pleistocene, and bedrock, 1:100,000 scale, 3 regional maps, 1:250,000 scale, and one bedrock map at 1:100,000 with multiple counties. Geodatases are available as downloads from the WGNHS web site.
WGNHS has approximately 240 cores donated to us by the Wisconsin Department of Transportation. The cores are from shallow holes drilled in the course of construction projects, mostly for bridges, culverts, and retaining walls. Photographs of the core are available through the WGNHS Data Viewer, and logs for approximately 70 of the cores are available on request.
Collection of cores from 2069 holes in critical mineral focus areas in Wisconsin. This is a subset of the collection, Rock cores from Wisconsin, cores drilled from sites across the state. Metadata follows the UGSS borehole template, with an added field for focus area. Each point shows a drillhole in one of approximately 20 critical minerals focus areas in Wisconsin. Core has been indexed by location and may not show evidence of critical minerals. Three focus areas are quite large and are represented by a large number of drillholes: Pembine-Wasusau terrane VMS, Archaean gneiss terranes, and Midcontinent Rift conduit-type magmatic sulfide Ni-Cu-PGE, but the usefulness of this core in identifying critical minerals...
Approximately 18,000 data points showing depth to Precambrian in Wisconsin in an ArcGIS Online map. Data points are based on well records, drillhole core, and geologists' interpretations of samples and drill records. Data points are sparse in areas where Paleozoic bedrock overlies the Precambrian.
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Hand specimens of rocks collected as a part of field work conducted primarily by present and former WGNHS staff members. Samples date from the early 20th century to the 1990s and were collected throughout the state. Many of the samples are described in the historical field notebook collection, and relationships between the samples and the field notebooks have been established and captured in identifiers. Locations for samples were taken from field notes, maps, and accession lists. There are approximately 5,700 hand samples in this collection.
    map background search result map search result map Rock hand specimens from Wisconsin Rock hand specimens from Wisconsin