500000
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Íslenskur jarðvegur telst til eldfjallajarðar (Andosol) að langmestum hluta, en eldfjallajörð er jarðvegur sem myndast á eldvirkum svæðum heimsins. Eldfjallajörð hefur afar sérstæða eiginleika sem greina hana frá öðrum jarðvegsgerðum. Útbúin var einföld flokkun fyrir íslenskan jarðveg, sem m.a. byggist á alþjóðlegum flokkunarkerfum en einnig á vinnu Björns Jóhannessonar og Þorsteins Guðmundssonar. Flokkunin gerir greinarmun á i) jarðvegi auðna (glerjörð sem skiptist í melajörð, malarjörð, sandjörð og vikurjörð; ii) jarðvegi gróins lands með sortueiginleika (sortujörð, sem skiptist í brúnjörð, votjörð og svartjörð), iii) lífrænni mójörð og að síðustu iv) öðrum jarðvegi sem er margvíslegur að gerð. Í síðasta flokknum er bergjörð útbreiddust, en auk þess má nefna frerajörð sífrerasvæða og kalkjörð. Jarðvegskortið var unnið á grundvelli sniða og jarðvegssýna sem safnað hefur verið víða um landið. Kortið er á vektora formi og í mælikvarða 1:500 000. Það er m.a. hluti evrópska jarðvegskortsins. A soil map of Iceland: The Soil map classification separates between; 1) andic soils, which are Brown Andosols, Gleyic Andosols and Histic Andosols; 2) Vitrisols, soils of deserts, which are divided into Cambic Vitrisols, Gravelly Vitrisols, Arenic Vitrisols and Pumice Vitrisols iii) Histosols, and iv) other soil types such as Cryosols and Leptosols. The classification system is in part based on WRB system and Soil Taxonomy and earlier work by Björn Jóhannesson and Þorsteinn Guðmundsson (see English Summary and 1. table in http://www.moldin.net/uploads/3/9/3/3/39332633/jardvegskort_2.pdf). The map is in a coarse scale (1:500 000) and is not intended to use for particular points on the landscape. It is rather an overview. It has been incorporated into the EU soil database and the Circumpolar soil map.
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The dataset contains geochemical analytical results for 725 heavy mineral concentrate samples collected by GEUS in Greenland as part of various geological mapping and mineral exploration activities. The samples originate from several campaigns, including a regional campaign conducted between 1982 and 1986 in the Nuuk area, a 1991 campaign in the southern Nuuk region, and samples collected in 2003 in the Qaanaaq region. Additional samples derive from smaller projects and campaigns with limited documentation. Analyses were carried out at different laboratories, including Activation Laboratories and Bondar-Clegg in Canada and Risø National Laboratory in Denmark. The dataset contains raw analytical results, and metadata concerning sampling procedures and analytical quality are not complete for all samples.
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The dataset contains basic information on the location of onshore and offshore drillholes in Greenland established for scientific research as well as mineral, oil and gas exploration. The dataset functions as a geographic reference layer and, where available, includes links to reports or summary sheets representing the original source of information. The dataset covers drillholes established between 1948 and 2019 and is subject to continuous updates as new information becomes available through scientific publications, press releases and company documentation.
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The geological map of Greenland at a scale of 1:500 000 is based on 14 digitised map sheets covering the whole of Greenland, with amendments in specific areas (Pedersen et al. 2013, GEUS Bulletin, DOI: 10.34194/geusb.v28.4727). The original digital version of the map was released through the Greenland Portal in 2012. Continued advances in geological knowledge have necessitated successive revisions in order to keep the map up to date. During the most recent update, a number of geographical areas were revised based on new geological data and interpretations, including parts of West Greenland, North Greenland, North-East Greenland, East Greenland and South-East Greenland. The updated map incorporates revised stratigraphic interpretations and improved representation of geological units and structures. The map has undergone extensive quality control, including complete harmonisation of lineaments and structural elements across map-sheet boundaries. The geological legend is dynamic and reflects the content of the current map view. Geological units are supported by descriptive information, and for most map polygons links are provided to a geological unit database containing further descriptions.
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The dataset shows the thickness of Quaternary deposits in Denmark. The thickness has been calculated as the difference between surface elevation and the depth to the top of the pre-Quaternary deposits. The map provides a nationwide overview of variations in Quaternary thickness and is used in geological, hydrogeological and planning-related contexts.
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The dataset contains polygons representing selected protected and regulated areas in Greenland relevant to mineral activities. The areas include UNESCO World Heritage Sites, nature protection areas, and zones with specific restrictions or prohibitions on mineral activities. The dataset is converted from a WFS service provided by the Ministry of Mineral Resources in Greenland and is used as a geographic reference in the assessment of exploration and exploitation licences. The polygons represent administrative boundaries and do not constitute a legally binding representation of current legislation.
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The seabed sediment map shows the distribution of seabed sediments in Danish waters and represents an integrated interpretation of sediment types within the upper approximately 0.5 metres of the seabed. Sediment classes are defined based on grain-size composition and reflect an average of the surface sediments. Glacial till is classified as a mixed sediment, while sedimentary bedrock indicates areas where deposits several million years old are exposed on the seabed. The map was updated in 2020 and builds upon the previous version from 2014, with newly mapped areas added at full level of detail. The dataset provides a nationwide overview of seabed sedimentary conditions and is used, among other purposes, for raw material mapping, marine spatial planning, and environmental assessments.
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The Greenland Geochronology Database is a systematic compilation of published U-Pb geochronological data from Greenland. The dataset integrates age determinations from a wide range of scientific publications and normalises isotopic ratios and uncertainties into a consistent format, with all analytical errors reported at the 1 sigma level. Ratios have been verified against reported ages and corrected where necessary to ensure internal consistency. The database is structured to enable efficient querying and cross-comparison of geochronological information derived using different analytical standards.
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The dataset represents an index layer showing the geographic extent of archived and unpublished historical geological maps and sections from Greenland. The layer functions as a search and reference tool and does not contain the original map material. The dataset supports identification and access to historical geological archive documents.
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The dataset represents an index layer showing the geographic extent of geological maps of Greenland printed and published by the Geological Survey of Greenland (GGU) and the Geological Survey of Denmark and Greenland (GEUS) since 1957. The layer functions as a search and reference tool and does not contain the original map material. The dataset provides direct links to the GEUS Dataverse, where each map is assigned a DOI and can be downloaded as high-resolution TIFF images (400 dpi) or PDF files.
Arctic SDI catalogue