quaternary-sediments-150000-ireland-roi-itm
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| Téama | Timpeallacht |
|---|---|
| Dáta eisithe | 2013-11-21 |
| Dáta nuashonraithe | 2021-10-18 |
| Cloíonn an tacar sonraí leis na caighdeáin seo | The INSPIRE Directive or INSPIRE lays down a general framework for a Spatial Data Infrastructure (SDI) for the purposes of European Community environmental policies and policies or activities which may have an impact on the environment. |
| Nótaí Cearta | ['Creative Commons Attribution 4.0 International (CC BY 4.0)', 'Data that is produced directly by the Geological Survey Ireland (GSI) is free for use under the conditions of Creative Commons Attribution 4.0 International license.\n\nhttps://creativecommons.org/licenses/by/4.0/\n\nhttps://creativecommons.org/licenses/by/4.0/legalcode\n\nUnder the CC-BY Licence, users must acknowledge the source of the Information in their product or application.\n\nPlease use this specific attribution statement: "Contains Irish Public Sector Data (Geological Survey Ireland) licensed under a Creative Commons Attribution 4.0 International (CC BY 4.0) licence".\n\nIn cases where it is not practical to use the statement users may include a URI or hyperlink to a resource that contains the required attribution statement.', 'license'] |
| Minicíocht Nuashonraithe | Eile |
| Teanga | English |
| Lamairne | https://dcenr.maps.arcgis.com/apps/webappviewer/index.html?id=de7012a99d2748ea9106e7ee1b6ab8d5&scale=0 |
| Clúdach Geografach i bhformáid GeoJSON | {"type":"Polygon","coordinates":[[[-11.0, 50.0],[-11.0, 56.0], [-5.0, 56.0], [-5.0, 50.0], [-11.0, 50.0]]]} |
| SRS | Irish Transverse Mercator (ITM, EPSG:2157) |
| Méid Ingearach | {"verticalDomainName": "sea level", "minVerticalExtent": "0", "maxVerticalExtent": "1041"} |
| Eolas Dualfhoinse | Geologists map and record information from the shallow sediments which can be seen at or near the surface. This information along with boreholes (a deep narrow round hole drilled in the ground) and geophysics is used to create the map. Areas are drawn on a map to show where materials are found. Originally, the Quaternary sediments map for various parts of Ireland were hand drawn on paper maps. Phase 1: The paper maps were digitised. Each map was manually digitised using AutoCAD software. The data was clipped to the OSi coastline (high water mark). Water bodies such as lakes were also clipped. Irish National Grid (IG) projection. Phase 2: Data was converted to shapefiles IG AutoCAD layers were converted from .dxf format to shapefiles. New data was compiled, interpreted and added to these data to produce a map covering Ireland (2013) A stylefile was generated. A legend was generated. Shapefiles produced were: QuaternarySediments.shp - A polygon shapefile that contains Quaternary geological information on deposit type. Phase 3: Quaternary sediments 1:50,000 Map, 2013 to present, ITM Quaternary Sediments Map re-projected in ArcGIS from Irish National Grid (IG) to Irish transverse Mercator (ITM) projection. New data is compiled and interpreted from the following sources: field observation data, Tellus geophysics data (magnetic, electromagnetic, radiometric data), Tellus geochemistry data, borehole data and groundwater data. When this information changes the distribution of the areas of Quaternary deposit, we update this 1:50,000 map with the changes. New data has been added into this dataset from parts of Cavan, Galway, Leitrim, Longford Monaghan, Sligo, Roscommon, Westmeath and Wexford. The dataset comprises one Featureclass. In 2021, the data structure was reviewed and a new database was created in ArcGIS Enterprise. Using ArcGIS Pro 2.6.3, the dataset was renamed as part of a GSI data standardisation process. The sediment field was renamed and an alias added. The sediment code field was renamed and an alias added. Metadata was updated to the new GSI standard based on INSPIRE and ISO standards. |
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