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Folders: ROOT > ScienceBase Catalog ( Show direct descendants )

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The current database consists of location 9,032 entries. The surface-based, point data include 5,272, 6,939, and 903 density, magnetic susceptibility, and NRM measurements, respectively. Downhole data from 146 drillcore have also been incorporated, yielding an additional 1,145 and 9,622 measurements of density and magnetic susceptibility, respectively. Geologic interpretation of gravity and magnetic anomaly data in a given area is greatly enhanced if density, magnetic susceptibility (MS) and natural remanent magnetization (NRM) data are available for representative rock-types (Chandler and others, 2008). Along with geologic information from outcrop and drill-holes, rock property data help relate geophysical anomaly...
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This collection (known internally at Maryland Geological Survey as Component 8) consists of 211 infrared, 9 in. by 9 in. aerial photographs (211 unique frames) flown on a 7.5-minute U.S. Geological Survey (USGS) quadrangle basis. The photographs date from 1988-1989 and were flown or otherwise acquired by the USGS National Aerial Photograph Program (NAPP). The Maryland counties covered by these photographs include Allegany, Anne Arundel, Calvert, Cecil, Charles, Dorchester, Kent, Prince George’s, Queen Anne’s, Somerset, St. Mary’s, Talbot, Washington, and Worcester Counties. The scale of these photographs is not printed on the photographs; however, Maryland Geological Survey (MGS) calculates the scale to be approximately...
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Paper copies of chemical analyses made at Illinois State Geological Survey from approximately 1932 to 1995. Includes chemical analyses for approximately 30,000 coal samples, 20,000 rock samples, 5,000 gas samples, 5,000 brine samples, and 5,000 water samples.
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An archive of mineral exploration files is maintained by MN DNR at its Hibbing facility MN DNR mineral exploration files archive
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This collection includes folders that contain coal chemical data from Indiana, collected before 1990. This collection is publicly accessible.
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The Historic Images Collection includes approximately 15,500 photographs, slides, lantern slides and digital media in this collection were taken during the course of geologic, mineral resource, and geologic hazard investigations carried out by Virginia Energy staff beginning in the first half of the 20th century. The collection includes images of important rock outcrops that demonstrate key features of stratigraphic units, fossils indicative of the age of rock formations, outcrop-scale geologic structures such as faults and folds, economically significant minerals and mine sites, and geologic hazards such as landslides and sinkholes. Images are available online in JPG format. High resolution imagery is available...
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The County Well Index database was initiated by MGS, and is now a collaborative effort of MGS and the Minnesota Department of Health (MDH). Much effort is committed to compile, add value, and distribute data from drilling done mostly by well contractors across the state. The MGS role is in categorization and correlation of materials intersected by drilling, as MDH administers well regulation. This GIS-based system contains basic information for over 540,000 wells drilled in Minnesota, and single-copy paper records are on file for about 100,000 additional sites. The entire well record including construction information such as casing, screen and pump information, hydrologic data, and descriptions of geologic materials...
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Static metadata (current to August 2018) of Minnesota's borehole geophysical log collection maintained by the Minnesota Geological Survey. This collection is web-accessible through the MGS Open Data Portal at https://z.umn.edu/borehole_geo, where users can obtain the most up-to-date information pertaining to old and new borehole geophysical logs and download corresponding PDF and LAS files for each log (if available). The Borehole Geophysical Database (BGD) is a collection of over 7000 borehole geophysical logs of water wells and drill holes throughout Minnesota. Database collections reside at the Minnesota Geological Survey (MGS) and are continually maintained and expanded upon by MGS staff as part of MGS mapping...
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The Karst database is now (06/30/2020) being managed by the Minnesota Department of Natural Resources, Ecological and Water Resources. Since the early 1980s, the partner agencies have been mapping karst features and publishing various versions of their results in the form of 1:100,000 scale County Geologic Atlases. In the mid 1990s, the Minnesota Department of Natural Resources was assigned responsibility for the hydrogeology portions of the County Atlases, and therefore is now responsible for the karst mapping. Sinkhole distribution maps have been published for several counties. The karst feature database has been developed to allow sinkhole and other karst feature distributions to be displayed and analyzed across...
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Collection of scanned mylar overlays and topographic field maps displaying outcrop, structural measurements, traverses, and geologic units.
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Compiled public domain and donated geotechnical drillhole data; plans call for this database to be merged with sediment composition profiles
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Minnesota Geological Survey, in cooperation with industry, sampled the State of Minnesota and adjacent regions for till geochemistry and indicator minerals at a 30-km spacing during summer 2004. Within target cells, each a quarter-degree latitude by a half-degree longitude, till from between about 1 and 2 m depth was sampled by filling a 15 liter plastic pail. At a few sites, vertical profiles were collected. In addition, three transects to the north were sampled, to help identify sediments derived by long-distance glacial transport, to obtain reference samples from the Thompson nickel belt, and also to extend sampling to the limit of Hudson Bay-derived carbonate-bearing sediments, to permit comparison to Minnesota...
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Collection of scanned 35mm film slides of outcrop and field sites from various MGS geologists, mostly pertaining to Precambrian geology in Minnesota.
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All sediment samples from auger holes, outcrops, and cores are processed to determine texture. The 1-2 mm coarse sand fraction is packaged separately, and about half of these fractions are categorized lithologically by a glacial geologist. The data are recorded on paper data sheets and in a database.
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about 90% Precambrian, nearly all related to mapping projects, most from recent decades total to the nearest thousand
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Collection comprises hand samples of ores and hand samples collected by NJ Geological Survey staff
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The Borehole Database for Virginia provides information about boreholes drilled by Virginia Energy as part of on-going geologic mapping studies conducted in the Coastal Plain of Virginia. This collection is available for study and sampling by scientists, citizens, government agencies, and by industry. Virginia Energy maintains this collection to support the wise use of Virginia's resources by providing quality geologic and mineral resource information. The collection includes records for approximately 1,800 boreholes, with location information, lithologic log, and interpreted formation contacts. These boreholes were drilled for water wells, geologic research, geotechnical engineering studies, and environmental...
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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.
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This collection (known internally to Maryland Geological Survey as Component 5A) consists of 103 photo-mosaic index maps (89 unique maps plus duplicates) dating from 1955-1981. The date printed on the index map (and listed in the metadata) is the date that flying (photography) was completed for each index map. Each photo-mosaic index map shows individual aerial photographs (with Flight Lines and Frame numbers) in a particular U.S. Geological Survey (USGS) 7.5-minute or 15-minute quadrangle in Maryland, Delaware, New Jersey, Virginia, or West Virginia. These index maps are black-and-white and approximately 10 in. by 12 in. in size. This collection serves as a finding aid for a portion of the Quad-Based Aerial...


map background search result map search result map Collection of Digital Maps from NJ Collection of Hand Samples from Minnesota Collection of Geochemical Samples from Minnesota Collection of Well Driller Logs from Minnesota Collection of Rock Properties from Minnesota Collection of Geochemical Data from Illinois Collection of Mineral Exploration Files from Minnesota Collection of Sediment Properties from Minnesota Collection of Karst Data from Minnesota Indiana Coal Chemical Data Collection of Hand samples from New Jersey Collection of Geotechnical Drilling from Minnesota Rock hand specimens from Wisconsin Historic Images (Virginia) Borehole Data (Virginia) Quad-Based Infrared Aerial Photographs, 1988-1989 Collection of Borehole Geophysical Logs from Minnesota Quad-Based Photo-Mosaic Index Maps, 1955-1981 Collection of 35mm Film Slides from Minnesota Collection of Mylar Overlays and Topographic Field Maps in Minnesota Collection of Digital Maps from NJ Collection of Hand samples from New Jersey Quad-Based Infrared Aerial Photographs, 1988-1989 Quad-Based Photo-Mosaic Index Maps, 1955-1981 Indiana Coal Chemical Data Collection of Geochemical Data from Illinois Historic Images (Virginia) Borehole Data (Virginia) Rock hand specimens from Wisconsin Collection of Borehole Geophysical Logs from Minnesota Collection of 35mm Film Slides from Minnesota Collection of Mylar Overlays and Topographic Field Maps in Minnesota Collection of Hand Samples from Minnesota Collection of Geochemical Samples from Minnesota Collection of Well Driller Logs from Minnesota Collection of Rock Properties from Minnesota Collection of Mineral Exploration Files from Minnesota Collection of Sediment Properties from Minnesota Collection of Karst Data from Minnesota Collection of Geotechnical Drilling from Minnesota