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The Lynne Deposit is a Volcanogenic Massive Sulfide Deposit in Oneida County in northern Wisconsin containing zinc, lead, silver, and small amounts of gold and copper. In 1990 and 1991, the Noranda Company drilled 133 exploration boreholes, and the core from some of these holes was donated to WGNHS and the Natural Resource Research Institute (NRRI) in Duluth, MN. In 2021, the NRRI donated core from seven holes to WGNHS. These cores were photographed, and detailed logs were created by Dr. Robert Lodge and students from the University of Wisconsin Eau Claire. Original documentation from the Noranda Company including logs, assays, cross sections, reports, and a site map are available at Oneida County’s website: https://www.co.oneida.wi.us/archive/mining/category1da1.html?linkcatid=9...
Dataset contains digital versions of physical core logs housed in Missouri Geological Survey archives. The logs are variable in detail, ranging from simple locations and formation tops to extensive stratigraphic descriptions and chemistry. A portion were done by MGS staff; others were donated by industry, academia, and government entities. The dataset includes logs for mines or undeveloped deposits with occurrences of or potential for critical minerals, along with logs in areas with permissive geology. The dataset comprises three tables: header and location information; formation/stratigraphic top, bottom and written description; and geochemical and assay data.
Digital files of basement structure in Colorado, including structure contours on top of Precambrian basement rock, selected wells drilled to Precambrian and Lower Paleozoic rocks, sedimentary basins, major oil and gas fields, Precambrian and Upper Cretaceous to Tertiary volcanic and intrusive rock outcrops. Major sedimentary basins and arches, as well as Precambrian mountain ranges and volcanic fields are included. Also included are 73 gas fields and 129 oil fields.
Dataset contains digital versions of physical core logs housed in Missouri Geological Survey archives. The logs are variable in detail, ranging from simple locations and formation tops to extensive stratigraphic descriptions and chemistry. A portion were done by MGS staff; others were donated by industry, academia, and government entities. The dataset includes logs for mines or undeveloped deposits with occurrences of or potential for critical minerals, along with logs in areas with permissive geology. The dataset comprises three tables: header and location information; formation/stratigraphic top, bottom and written description; and geochemical and assay data.
This set includes 52 cores collected from the Mohawk River Valley, NY (Herkimer, Fulton, Montgomery, Schoharie, and Saratoga Counties). Each well was cored continuously from the top of bedrock to the total depth (TD), capturing a complete stratigraphic section of Late Ordovician to (in most cases) Precambrian basement. Core diameters are BX and NX, and lengths range from ~400 to ~1400 feet. The Mohawk Valley cores are of particular value because they were collected at the north end of the Appalachian Basin, in an area where there has been little other exploratory drilling. The results from previous analyses are available upon 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.
Access to deliverables produced for Earth Mapping Resources Initiative (MRI) priorities under the National Geologic and Geophysical Data Preservation Program (NGGDPP).
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Raster grids depicting the current knowledge for elevation for the bedrock surface, pre-Mesozoic surface, the Precambrian surface and the basement surface based on the addition of new data from completed mapping. Basement is the top of structurally complex Precambrian rocks where the Phanerozoic and Proterozoic basins are removed based on geophysical modeling and drill hole interpretation. Statewide elevation datasets are stored as contoured line files and attributed with publication source, contour elevation and date and time of last edit. New raster grids are generated with the 'Topo to Raster' tool in ESRI ArcMap 10.7. 6/2023 Update: The 2023 version of rasters are currently not available online to download but...
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A compilation of drill core logs and thin section notes, including well abandonment reports, drill hole location maps, and associated notes, from Minnesota Geological Survey Precambrian geologists. These logs and notes were scanned using NGGDPP FY22 support and will support future investigations of Precambrian geology by MGS Precambrian geologists, other statewide stakeholders, industry, and universities.
Hand specimens of rocks collected in and around Marathon County as part of a bedrock mapping project in the 1970s and 1980s. Specimens were collected by P.E. Myers and UW-Oshkosh geologist Gene LaBerge as part of the field work supporting WGNHS publication Information Circular 45: Precambrian Geology of Marathon County, 1983. The collection consists of about 1500 specimens taken from approximately 580 outcrop locations.
    map background search result map search result map Rock hand specimens from Wisconsin Mohawk Valley Cores Earth Mapping Resources Initiative (MRI) Product Repository for New Mexico Collection of core logs from Missouri Collection of Drill Core Logs and Thin Section Notes from Minnesota Collection of Topography Rasters for Various Bedrock Surfaces in Minnesota, MGS Database, D-04 Mohawk Valley Cores Collection of core logs from Missouri Rock hand specimens from Wisconsin Collection of Drill Core Logs and Thin Section Notes from Minnesota Collection of Topography Rasters for Various Bedrock Surfaces in Minnesota, MGS Database, D-04