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Folder: ROOT ( Show direct descendants )

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ROOT
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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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Compiled public domain and donated geotechnical drillhole data; plans call for this database to be merged with sediment composition profiles
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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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The Minnesota drill core repository is managed by the Department of Natural Resources, in relation to a legislated obligation to submit a one-fourth portion of core samples obtained for mineral exploration. These samples become property of the state and are stored in the DNR's drill core library, located in Hibbing. The original drill core library was constructed in 1972. The most recent additions were constructed in 1990, and were subsequently expanded in 1995. Construction presently is underway on an expansion. The existing facility contains nearly 2.3 million feet of core, extracted from 79 Minnesota counties during the period from 1905 to the present.
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In 2008, Virginia Department of Energy received by donation from the University of Virginia (UVA) a large collection of rock, mineral, and fossil specimens that was at risk of imminent disposal or dispersal due to the lack of adequate storage facilities. The collection includes many valuable and irreplaceable geologic specimens collected in Virginia by UVA students, faculty, and geoscientists from the early Virginia Geological Survey. Parts of the collection were at one time displayed in the Lewis Brooks Hall of Natural Science, which opened in 1877. Following the closure of the UVA Department of Geology in the 1960s, the collection was moved to various warehouse storage areas, where it was largely forgotten and...
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This collection (known internally at Maryland Geological Survey as Component 5) consists of 4,720 items – 4,715 black-and-white aerial photographs (4,688 unique frames plus 27 duplicates) and 5 associated index maps. The aerial photographs were flown or acquired by the U.S. Geological Survey (USGS) and organized on a 7.5-minute quadrangle basis. The photographs are black-and-white and approximately 9 in. x 9 in. in size. The scale of the aerial photography varies but ranges from approximately 1:12,000 to 1:35,400. These photographs date from 1936-1991 and were donated to the Maryland Geological Survey (MGS). The index maps serve as a finding aid for several of the flight series flown over five quadrangles...
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Paleontological specimens related to University of Minnesota School of Earth Sciences research; about a quarter from Minnesota; includes reference collections for lower Paleozoic of the upper Mississippi valley Stored at the Bell Museum
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Thin sections, nearly all Precambrian rocks, nearly all related to mapping projects; many several decades old total to the nearest thousand
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This is the collection of original paper gamma-ray logs, copies and other items that are associated with the gamma-ray logs housed at the Indiana Geological Survey. They are stored in 12 file cabinets. This represents all of the original paper copies since 1978 when the collection began. Each log can be found filed in the original file, used mainly as a master file, as well as by county, the working file. The paper logs have been digitized made available to the public at https://igws.indiana.edu/borehole-logs in .las and .pdf format.
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Over 61,000 Minnesota Geological Survey gravity station represents more than 40 years of surveying. The 2003 release added over 2000 stations relative to its 1991 predecessor as a result of ongoing project work, along with inclusion of additional archival data. Ongoing augmentation of the database is based on measurements at stations on profiles spaced at 0.25 mile intervals along corridors, to areas where stations are spaced at 0.5 to 1.0 mile intervals, and in some areas 2 miles, along available roads and trails. Most of the new measurements were taken with a Lacoste and Romberg G-320 gravity meter with a stated precision of 0.01 milligal. As a result of various error sources, gravity values are considered precise...


map background search result map search result map Collection of Digital Maps from NJ Indiana Water Well Gamma-Ray Logs and Accompanying Records Collection of Thin Sections from Minnesota Collection of Hand Samples from Minnesota Collection of Paleontological Samples from Minnesota Collection of Well Driller Logs from Minnesota Collection of Geochemical Data from Illinois Collection of Mineral Exploration Files from Minnesota Collection of Drill Cores from Minnesota Collection of Gravity Data 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 Historic Images (Virginia) Fossil Collection (Virginia) Borehole Data (Virginia) Quad-Based Aerial Photographs, 1936-1991 Quad-Based Infrared Aerial Photographs, 1988-1989 Collection of Borehole Geophysical Logs from Minnesota Collection of Digital Maps from NJ Collection of Hand samples from New Jersey Quad-Based Infrared Aerial Photographs, 1988-1989 Quad-Based Aerial Photographs, 1936-1991 Indiana Water Well Gamma-Ray Logs and Accompanying Records Indiana Coal Chemical Data Collection of Geochemical Data from Illinois Historic Images (Virginia) Fossil Collection (Virginia) Borehole Data (Virginia) Collection of Borehole Geophysical Logs from Minnesota Collection of Thin Sections from Minnesota Collection of Hand Samples from Minnesota Collection of Paleontological Samples from Minnesota Collection of Well Driller Logs from Minnesota Collection of Mineral Exploration Files from Minnesota Collection of Drill Cores from Minnesota Collection of Gravity Data from Minnesota Collection of Karst Data from Minnesota Collection of Geotechnical Drilling from Minnesota