Map layer: Geology
The Geology category brings together bedrock and loose masses maps, marine border, mineral deposits and groundwater data from NGU (Norges geologiske undersøkelse). The layers give geological background for geotechnical assessments, risk analysis (quick clay, radon, marine clay) and resource mapping. Many of the layers in Risk use Geology as a sublayer.
Layers in this category (22)
| Layer | Description | Source |
|---|---|---|
| Bedrock N250 | The map data in Bedrock N250 is mainly based on the national printed bedrock geology map series at a scale of 1:250,000. | Norges geologiske undersøkelse |
| Bedrock N50 | The maps are built on a combined interpretation of field observations, geophysical data, digital elevation models and aerial photos, along with analyses of collected samples. | Norges geologiske undersøkelse |
| Marine border | The marine border marks the highest level the sea reached after the last ice age. | Geodata AS |
| Mining rights | The data shows areas covered by mining rights for state-owned minerals, as defined by the Norwegian act on the acquisition and extraction of mineral resources (mineralloven). | Geodata AS |
| Gravel and crushed stone | NGU's gravel and crushed stone database holds information on almost all gravel and crushed stone deposits and extraction sites in Norway used as raw material for building and construction work. | Geodata AS |
| Mineral resources | The data gives an overview of registered entries for industrial minerals, natural stone and metal resources. The mineral resource data contains both area and point entries for all three groups. | Geodata AS |
| Petroleum Cultural | This map layer gives a detailed presentation of petroleum geology in Norway, and covers critical elements such as faults, geological boundaries, published play outlines, domes, structural... | Geodata AS |
| Petroleum Wellbores | This map layer gives a comprehensive overview of petroleum well drilling located in Norway's offshore and onshore regions. | Geodata AS |
| Geological heritage | Geological localities of particular value give insight into geological heritage and diversity, useful in planning and risk assessment. | Norges geologiske undersøkelse |
| NADAG – ground investigations | The national database for ground investigations (NADAG) contains data from completed geotechnical investigations (geotechnical boreholes). | Norges geologiske undersøkelse |
| Petroleum Infrastructure | This map layer gives a detailed representation of petroleum infrastructure in Norway, and covers key facilities and pipelines that are essential for the oil and gas industry. | Geodata AS |
| Quick Clay – Caution | Shows areas where there may be a risk of quick clay landslides, based on marine clay deposits and terrain criteria (height difference and slope). | Norges vassdrags-og energidirektorat |
| Quick clay | The maps give an overview of zones with potential danger (caution areas) for larger quick clay landslides. | Norges vassdrags-og energidirektorat |
| Landslides | NVE caution map for rockfall, showing potential release and runout areas for rockfall. | Geodata AS |
| Radon susceptibility | The dataset shows which areas in Norway are likely to be more exposed to radon than others. | Geodata AS |
| Possibility of marine clay | The dataset 'Possibility of marine clay' (MML) is based on loose masses maps and the dataset for the marine border (MG), and shows where marine clay may potentially be found, either at the surface or under other... | Geodata AS |
| Loose masses | The loose masses data mainly shows the extent of the types of loose masses that cover the rock surface. | Geodata AS |
| Groundwater (GRANADA) | The national groundwater database (GRANADA) gives information about wells and springs in loose masses and rock, exploratory drilling, groundwater quality, depth to bedrock, borehole parks, and monitoring of... | Norges geologiske undersøkelse |
| Drainage lines | Drainage lines are derived from http://hoydedata.no at a resolution of 50 cm. | Geodata AS |
| Groundwater boreholes | The dataset gives a national overview of drilled groundwater wells, energy wells and natural groundwater springs. | Geodata AS. Datasets: Groundwater boreholes |
| Soil moisture | The soil moisture map gives the height difference in centimetres between a point and the nearest point calculated to be water-saturated. | Geodata AS. Datasets: Soil moisture |
| Quick Clay – Caution | Caution zones for quick clay landslides based on marine clay deposits and terrain criteria (height difference and slope) | Norges vassdrags- og energidirektorat (NVE) |
| Bedrock | Modernised map service showing a continuous bedrock map at 1:250,000 covering the whole of Norway, with harmonised interpretation across map sheets | Norges geologiske undersøkelse (NGU) |
| Geology | Geodata AS | |
| Geology (combined) | Includes: mining rights, groundwater boreholes, gravel and crushed stone, loose masses, marine border, mineral resources, possibility of marine clay and radon susceptibility | Placepoint |
| Bedrock, derived maps, NiN | Derived bedrock maps from NGU for Natur i Norge: forecast for lime content in the bedrock and the extent of ultramafic rocks | Norges geologiske undersøkelse (NGU) |
| Drill cores | NGU's drill core archive: places where drill cores have been taken for bedrock, natural stone, metals and industrial minerals | Norges geologiske undersøkelse (NGU) |
| Geochemistry | NGU's national geochemistry database: field samples of loose masses, stream sediments and water with analysed elements, and survey points with geochemical measurements | Norges geologiske undersøkelse (NGU). Datasets: Loose masses |
| Geosites, GNIST | NGU's register of geosites: localities with geological value for teaching, research, outdoor recreation and geotourism, shown as polygons and symbols at national, regional and local level depending on how far you have zoomed in | Norges geologiske undersøkelse (NGU) |
| Landforms, NiN | NGU's landform map following Natur i Norge: clay ravines, clay landslide hollows, kettle holes, fossil deltas and earth pyramids as polygons, symbols and lines, with geotope value from negligible to very high | Norges geologiske undersøkelse (NGU) |
| Permafrost | NGU's permafrost mapping: study areas with mapped permafrost and boreholes with temperature measurements in Norway and on Svalbard | Norges geologiske undersøkelse (NGU) |
Bedrock N250
National bedrock geology map data at a scale of 1:250,000. Data from Norges geologiske undersøkelse (NGU). The layer includes sublayers for polygons, boundaries, lines, linear structure and survey points, which can be hidden or shown individually with the Hide/Show control in Active Layers. Datasets: Bedrock.
About the map layer
The map data is mainly based on the national printed bedrock geology map series at a scale of 1:250,000, and has since been harmonised across map sheet boundaries and updated with newer map data.
Sublayers (5)
| Sublayers | Description |
|---|---|
| Survey point | Point used for structural or geological measurements. |
| Linear structure | Mapped linear geological structure or element. |
| Lithology line | Line showing a change or trend in the rock. |
| Rock boundary | Boundary between different rock units. |
| Rock unit (area) | Polygon representing a rock unit or lithology. |
Bedrock N50
Combined interpretation of field observations, geophysical data and digital elevation models at a scale of 1:50,000. Data from Norges geologiske undersøkelse (NGU). More detailed than N250, but does not cover the whole country with the same precision. The layer includes the same subtypes as N250 (polygons, boundaries, lines, linear structure, survey points).
About the map layer
The maps are built on a combined interpretation of field observations, geophysical data, digital elevation models and aerial photos, along with analyses of collected samples.
Marine border
The highest level the sea reached after the last ice age. Data from Geodata AS. The marine border is an important reference point when assessing quick clay landslides: loose masses deposited below the marine border may contain sensitive marine clay. Combine it with Loose masses and Possibility of marine clay for a combined geotechnical background check. Datasets: Marine border.
About the map layer
The marine border marks the highest level the sea reached after the last ice age. The information is central to the work of delimiting areas with marine clays in Norway. Issues linked to such deposits can be ruled out above the marine border, which is important in public planning work. Quick clay and landslides in marine deposits can only occur below the marine border.
Update frequency: Monthly.
Filtering
The filter lets you narrow by Theme.
Mining rights
Areas covered by mining rights for state-owned minerals, under the mineral act (mineralloven). Data from Norges geologiske undersøkelse (NGU). Important for development in mining regions: active mining rights can limit land use. Datasets: Mining rights.
About the map layer
The data shows areas covered by mining rights for state-owned minerals under mineralloven. The dataset contains defined areas for exploration rights (UN) and extraction rights (UT). Several mining rights may be issued for the same geographic area; the individual rights have different priority based on the date received. Direktoratet for mineralforvaltning med Bergmesteren for Svalbard (DMF) owns the dataset. Exploration rights are valid for 7 years, extraction rights for 10 years.
Update frequency: Monthly.
Filtering
The filter narrows by Rights holder, Right name and Easement.
Gravel and crushed stone
The gravel and crushed stone database with information on deposits and extraction sites used as raw material for building and construction work. Data from Norges geologiske undersøkelse (NGU). The layer covers point, line and polygon registrations. Useful when assessing mass transport and mass extraction in planning processes. Datasets: Gravel and crushed stone.
About the map layer
NGU's gravel and crushed stone database holds information on most gravel and crushed stone deposits and extraction sites in Norway for use as raw material in building and construction work, with information on land use, volume, quality and the importance of the resources.
Update frequency: Monthly.
Mineral resources
Registered entries for industrial minerals, natural stone and metal resources, with both area and point entries. Data from Norges geologiske undersøkelse (NGU). Datasets: Mineral resources.
About the map layer
Overview of registered deposits of industrial minerals, natural stone and metal resources, with both area and point entries for all three groups.
Update frequency: Monthly.
Petroleum Cultural
Detailed presentation of petroleum geology in Norway, including faults, geological boundaries, play outlines, domes and structural elements. Data from Sokkeldirektoratet (formerly Oljedirektoratet). Mainly relevant for offshore and coastal areas. Datasets: Petroleum Cultural.
About the map layer
The map layer gives a detailed presentation of petroleum geology in Norway, with elements such as faults, geological boundaries, published play outlines, domes, structural elements and oil and gas geochemistry.
Update frequency: Monthly.
Petroleum Wellbores
Overview of petroleum well drilling in Norway's offshore areas, separating exploration wells, development wells and other wellbores. Data from Sokkeldirektoratet (formerly Oljedirektoratet). Datasets: Petroleum Wellbores.
About the map layer
The map layer gives an overview of petroleum wellbores in Norway's offshore and onshore regions, categorised by type, including active well and development well.
Update frequency: Monthly.
Geological heritage
Geological localities of particular value, registered by NGU. Data from Norges geologiske undersøkelse (NGU). The layer covers both polygon and point registrations. It can be relevant in planning processes where cultural environment and natural values are mapped. Datasets: Geological heritage.
About the map layer
Geological localities of particular value give insight into geological heritage and diversity, useful in planning and risk assessment. The layer from NGU contains both large landscape elements and smaller geosites, and can be used in impact assessments and sustainable land management. Supplementary fact sheets give detailed descriptions of each geosite.
Update frequency: Updated manually.
NADAG – ground investigations
The national database for ground investigations (NADAG) shows the location of geotechnical boreholes, sampling and stability analyses carried out by municipalities, Statens vegvesen and private parties. Data from Norges geologiske undersøkelse (NGU). Useful for seeing whether existing geotechnical data exists on or near a plot, which can reduce the cost of a new ground investigation. Also available under Infrastructure. Datasets: NADAG – ground investigations.
About the map layer
National database for geotechnical investigations (boreholes), run by NGU together with partners. The amount of information per data point varies depending on the supplier.
Update frequency: When the source changes.
Sublayers (1)
| Sublayers | Description |
|---|---|
| Group layer – for simple use / cached services | Practical group layer that brings together cached services. |
Petroleum Infrastructure
Detailed representation of petroleum infrastructure in Norway, including pipelines, subsurface and surface facilities, and onshore plants. Data from Sokkeldirektoratet (formerly Oljedirektoratet). Also available under Infrastructure. Datasets: Petroleum Infrastructure.
About the map layer
The map layer gives a detailed representation of petroleum infrastructure in Norway, with key facilities and pipelines that are essential for the oil and gas industry.
Update frequency: Monthly.
Quick clay
Zones with potential danger of quick clay landslides, classified by risk and hazard level. Data from NVE / NGI. The layer distinguishes between mapped areas, risk classes and hazard level. Also available under Risk.
About the map layer
The maps give an overview of zones with potential danger (caution areas) for larger quick clay landslides. The zones have been identified and delimited through Quaternary geological mapping (to identify areas with marine clay), geotechnical assessment of topography and coarse geotechnical investigations. The zones cover release areas for quick clay landslides (areas that may slide out); in more recent mapping, runout areas may also be included. The identified quick clay zones are classified into three hazard classes (high, medium and low) based on topographic, geotechnical and hydrological criteria. The zones are further classified into three consequence classes (high, medium and low) depending on the consequences a landslide would have for buildings and infrastructure. The zones are then classified into five risk classes derived from hazard level and consequence. Area of use The dataset is primarily intended as a basis for assessing quick clay landslide danger at municipal plan level. It is also intended as an information basis for municipalities, landowners, developers and others, with a view to avoiding terrain interventions and activities that may trigger landslides. The mapped zones show only areas with potential danger of larger landslides (terrain difference of 15 m or more). Quick clay zones with landslide danger may exist outside the identified zones. In all areas with marine clay deposits, general caution must be exercised against possible quick clay landslides.
Update frequency: Real time.
Quick Clay – Caution
Caution zones for quick clay landslides based on marine clay deposits and terrain criteria (height difference and slope). Data from Norges vassdrags- og energidirektorat (NVE). More detailed delimitation than the main layer Quick clay; also available under Risk.
About the map layer
Shows areas that may be exposed to quick clay landslides, based on marine clay deposits and terrain criteria (slope and height difference). If the measure lies within the caution area, the procedure in NVE guide 1/2019 must be followed, and geotechnical expertise obtained. The map replaces the earlier "Aktsomhet marin leire" and now also captures terrain that may trigger landslides. The map is updated regularly and should be seen together with the hazard zone map for a complete assessment.
Landslides
NVE caution maps for rockfall, snow avalanches and landslides, including landslide events and release and runout areas. Data from Norges vassdrags- og energidirektorat (NVE). Also available under Risk. Datasets: Landslides.
About the map layer
Caution maps (rockfall, snow avalanches, quick clay, possibility of marine clay, earth flow), registered landslide events and rock avalanche hazard zones with return intervals. Sources: NVE, NGI, NGU.
Update frequency: Monthly.
Radon susceptibility
Shows which areas in Norway are likely to be more exposed to radon than others, based on bedrock and loose masses. Data from Norges geologiske undersøkelse (NGU). Useful when buying and renting out housing: high susceptibility means a radon measurement is recommended before moving in. Datasets: Radon susceptibility.
About the map layer
The national caution map for radon shows which areas in Norway are likely to be more exposed to radon than others. In areas marked with high susceptibility, at least 20% of homes are calculated to have radon concentrations above the recommended limit value of 200 Bq/m³ on the ground floor. The dataset is based on indoor air measurements of radon (from the NRPA database) and knowledge of geological conditions (NGU's databases for bedrock and loose masses). In some areas radon has been measured in many homes, while in others few measurements are available. The dataset was developed by statistically assessing how the share of homes with high radon concentrations can be linked to local geology, and by transferring this knowledge to other areas with similar geological conditions. Area of use The national caution map for radon gives municipalities a basis for a first assessment of radon danger. In areas with high or particularly high susceptibility, the municipality should examine whether the radon issue needs follow-up under the planning and building act and the public health act with their regulations. The map cannot be used to predict the radon concentration in individual buildings. The only way to gain reliable knowledge about radon in a building is to carry out a measurement.
Update frequency: When the source changes.
Sublayers (3)
| Sublayers | Description |
|---|---|
| Radon – Detailed | The map layer is used to get an overview of whole counties, or the whole of Norway. |
| Radon and Alum Shale | * RADON * The national caution map for radon shows which areas in Norway may be more exposed to radon than others. The map is based on indoor air measurements of radon and on knowledge of geological conditions. The map shows four classes: "particularly high susceptibility" (purple colour), "high susceptibility" (red colour), "moderate to low susceptibility" (yellow colour) and "uncertain susceptibility" (grey colour). The map is based on indoor air measurements of radon and on knowledge of geological conditions. In some areas in Norway many homes have been measured for radon, in others few or none. This map was developed by transferring knowledge about the share of high radon concentrations in homes located on known geology to other areas with similar geological conditions. "Particularly high susceptibility" is a separate class that also appears in dedicated alum shale maps. In areas marked with "high susceptibility", at least 20% of homes are calculated to have radon concentrations above the upper recommended limit value of 200 Bq/m3 on the ground floor. The map cannot be used to predict the radon concentration in individual buildings. The only way to gain reliable knowledge about radon in a building is to carry out a measurement. Radon in indoor air depends not only on geological conditions, but also on the construction and operation of the building, as well as the quality of radon-preventing measures. |
| Radon – Overview | The map layer can be used for large areas, whole counties, or the whole of Norway. |
Filtering
The filter lets you narrow by Susceptibility level.
Possibility of marine clay
Based on loose masses maps and the dataset for the marine border. Shows where marine clay may potentially be found, either at the surface or under other loose masses. Data from Norges geologiske undersøkelse (NGU). An important supplement to the Quick clay layer during geotechnical screening. Datasets: Possibility of marine clay.
About the map layer
The dataset "Possibility of marine clay" (MML) is based on loose masses maps and the dataset for the marine border (MG), and shows where marine clay may potentially be found, either at the surface or under other types of loose masses.
Update frequency: Monthly.
Filtering
The filter supports narrowing by Loose masses type and Possible marine clay.
Loose masses
The extent of the types of loose masses that cover the rock surface, classified by origin and type (moraine, sea and fjord deposits, river deposits and more). Data from Norges geologiske undersøkelse (NGU). The basis for understanding whether an area is dominated by stable moraine masses or sensitive marine clay.
About the map layer
The loose masses data mainly shows the extent of the types of loose masses that cover the rock surface. Most of the loose masses were formed during and after the last ice age. The data shows only which soil type dominates in the top few metres of the terrain surface.
Update frequency: Monthly.
Filtering
The filter supports narrowing by Loose masses type and Infiltration capacity.
Groundwater (GRANADA)
The national groundwater database (GRANADA) with information about wells, springs, exploratory drilling, groundwater quality, depth to bedrock and borehole parks. Data from Norges geologiske undersøkelse (NGU). Useful when planning energy wells (ground-source heat) and when assessing groundwater resources in a development area. Datasets: Groundwater (GRANADA).
About the map layer
National groundwater database: wells, springs, exploratory drilling, quality, depth to bedrock, borehole parks and monitoring.
Update frequency: Weekly.
Sublayers (24)
| Sublayers | Description |
|---|---|
| Groundwater monitoring – map info | Information layer for groundwater monitoring maps. |
| Borehole park – map info | Information layer for borehole parks. |
| Groundwater monitoring – area | Areas linked to groundwater monitoring. |
| Borehole park area | Area extent of a borehole park. |
| Dredged area boundary | Boundary of a dredged area. |
| Monitoring well | Well used for groundwater monitoring. |
| Monitoring spring | Spring monitored for groundwater data. |
| Borehole in borehole park | Individual borehole in a borehole park. |
| Energy well (geothermal) | Well used for ground-source heat energy. |
| Well – unknown use | Well with unknown or unspecified purpose. |
| Well – water supply | Well used for water supply. |
| Exploratory drilling | Test or probe drilling. |
| Groundwater boreholes | The dataset gives a national overview of drilled groundwater wells, energy wells and natural groundwater springs (previously called sources). Data owner: Norges geologiske undersøkelse. National dataset. |
| Groundwater spring | Natural spring of groundwater. |
| Borehole park | Cluster or field of boreholes, often for energy use. |
| Borehole – depth to bedrock | Measured depth from the surface to bedrock. |
| Borehole – minimum depth to bedrock | Smallest registered depth to bedrock. |
| Borehole – drilled depth | The total drilled depth of the borehole. |
| Borehole – minimum depth to bedrock, text | Text labels for the minimum depth to bedrock. |
| Borehole – depth to bedrock, text | Text labels for depth to bedrock. |
| Borehole – drilled depth, text | Text labels for drilled depth. |
| Groundwater monitoring – point | Point features used in groundwater monitoring. |
| Groundwater points – regional | Regional set of groundwater points. |
| Groundwater points – national | National set of groundwater points. |
Drainage lines
Drainage lines derived from hoydedata.no at 50 cm resolution, divided by upstream area (from 1-10 dekar to more than 1,000 dekar). Data from Geodata AS. Gives a picture of natural water flow across the terrain, useful when assessing surface water management and flood paths. Datasets: Drainage lines.
About the map layer
Drainage lines are derived from hoydedata.no at a resolution of 50 cm. The lines cover about 99% of the country and are placed where water collects over an area larger than 1 daa (1,000 m²). Before the analysis was carried out, sinkholes in the terrain models were filled; buildings, culverts and drainage pipes have not been edited. The analyses were carried out by dividing the areas as in NVE's Regine polygons, and the attributes from that dataset were then added to the lines.
Update frequency: When the source changes.
Groundwater boreholes
National overview of drilled groundwater wells, energy wells and natural groundwater springs. Data from Geodata AS.
About the map layer
The dataset gives a national overview of drilled groundwater wells, energy wells and natural groundwater springs.
Update frequency: Monthly.
Filtering
The filter narrows by Type, Geological medium, Drilling date and Well use extent.
Soil moisture
The height difference between a point and the nearest point calculated to be water-saturated, given in centimetres. Data from Geodata AS. A low value indicates a high groundwater table near the surface, relevant when assessing building ground and drainage.
About the map layer
The soil moisture map gives the height difference in centimetres between a point and the nearest point calculated to be water-saturated.
Update frequency: When the source changes.
Bedrock
Modernised map service showing a continuous bedrock map at 1:250,000 covering the whole of Norway, with harmonised interpretation across map sheets. Structural survey points that give the orientation of the structures in the bedrock are included.
About the map layer
Modernised map service showing a continuous bedrock map at 1:250,000 covering the whole of Norway, with harmonised interpretation across map sheets. Structural survey points that give the orientation of the structures in the bedrock are included. The 1:250,000 database and the map viewer now contain properties such as main rock type, nappe complex, formation and formation age. Area of use Knowledge of the bedrock is important for exploring for and assessing raw materials and natural resources, water supply, planning and building infrastructure, waste storage, land and environmental planning, construction work, alternative energy and assessment of natural hazards such as earthquakes and landslides.
Update frequency: Real time.
Sublayers (29)
| Sublayers | Description |
|---|---|
| Bedrock Raster N250 | Raster version of NGU's bedrock map at a scale of 1:250,000, with rock unit polygons shown as coloured areas. Gives a quick overview of bedrock conditions in plot analyses and early-phase feasibility studies. |
| Bedrock Raster N250 – Overview | Overview version of the N250 raster, adapted for display at small scales. Used for regional context around rock distribution. |
| Bedrock Raster N250 – Detail | Detailed raster version of N250, adapted for display at large scales. Gives a clearer delimitation of rock unit polygons at plot level. |
| Rock Unit – Polygon | Polygons showing the extent of each rock unit in N250. Developers use the layer to identify the rock type under the plot for foundation and blasting assessments. |
| Rock Unit – Boundary | Boundary lines between rock units, including faults and observed contacts. Useful for assessing transitions and weakness zones near a project area. |
| Rock Unit – Line | Linear rock elements such as dykes and narrow units that are not suited to polygons. Complements the polygon layer in detailed mapping. |
| Rock – Linear Structure | Linear structures in the bedrock, such as thrust zones and marked fracture systems. Gives a basis for assessing stability and rock quality. |
| Lineaments (Satellite Interpreted) N750 | Lineaments interpreted from satellite images at a scale of 1:750,000, which often correspond to larger weakness zones in the bedrock. Used for high-level assessment of regional structures. |
| Planar Structure Point | Survey points for planar structures in the bedrock, with strike and dip recorded in the field. Gives a basis for understanding the orientation of foliation, bedding and fracture planes. |
| Other Planar Structures | Symbols for planar structures that are not foliation, bedding or fracture planes. Supplements the structural geology picture of an area. |
| Other Planar Structures – Value | Shows measured dip and strike values as numbers next to the symbols for other planar structures. Used in detailed structural geology interpretation. |
| Fracture Plane | Symbols for fracture planes and fractures with recorded orientation. Relevant for assessing rock stability at cuttings, tunnels and foundations. |
| Fracture Plane – Value | Shows measured dip and strike values as numbers next to the fracture plane symbols. Gives a quantitative basis for stability analyses. |
| Axial Plane | Map layer showing axes and reference lines for building plans. |
| Axial Plane – Value | Value for the axial plane in the map layer. |
| Foliation | Symbols for foliation, that is, plane-parallel structure in metamorphic rocks. Indicates weakness directions that can affect blasting and rock stability. |
| Foliation – Value | Shows measured dip and strike values as numbers next to the foliation symbols. Used in detailed assessment of fracturing in the rock mass. |
| Bedding | Symbols for bedding in sedimentary rocks, with strike and dip. Shows the original depositional structure and orientation of the rock layers. |
| Bedding – Value | Shows measured dip and strike values as numbers next to the bedding symbols. Complements the symbol display with precise angles. |
| Linear Structure Point | Survey points for linear structures such as lineation and fold axes in the bedrock. Gives a basis for interpreting deformation history. |
| Other Linear Structures | Symbols for linear structures that are not lineation or fold axes. Supplements the structural geology picture. |
| Other Linear Structures – Value | Shows measured plunge and direction values as numbers next to the symbols for other linear structures. |
| Fold Axis | Symbols for fold axes in the bedrock, with plunge and direction. Describes large-scale deformation in the rock units. |
| Fold Axis – Value | Shows measured plunge and direction values as numbers next to the fold axis symbols. |
| Lineation | Symbols for lineation, that is, linear elements in the bedrock such as mineral stretching. Indicates the direction of movement during deformation. |
| Lineation – Value | Shows measured plunge and direction values as numbers next to the lineation symbols. |
| Rock Unit – Formation Age | Rock unit polygons coloured by formation age instead of rock type. Gives geological and historical context for the area. |
| Rock Unit – Main Tectonic Division | Rock unit polygons coloured by main tectonic division, such as basement, thrust nappes and sedimentary basins. Gives a high-level geological framework for the area. |
| Bedrock | Collective layer for NGU's bedrock map N250 with rock unit polygons, boundaries, lineaments and structural measurements. A basis for assessing rock type and structural geology in development. |
Geology
About the map layer
Petroleum data for the continental shelf from Geodata's Petroleum Online Services, with blocks, quadrants, installations, pipelines and wells. Based on data from Sokkeldirektoratet, with equivalent data for the British, Dutch and Danish sectors.
Update frequency: When the source changes.
Geology (combined)
Includes: mining rights, groundwater boreholes, gravel and crushed stone, loose masses, marine border, mineral resources, possibility of marine clay and radon susceptibility.
About the map layer
Includes: mining rights, groundwater boreholes, gravel and crushed stone, loose masses, marine border, mineral resources, possibility of marine clay and radon susceptibility.
Sublayers (18)
| Sublayers | Description |
|---|---|
| Layers | Collective group for the service that contains all the sublayers from Riksantikvaren's cultural heritage data. |
| Buildings | Bygning is the matrikkel representation of a planned building, a building under construction, a completed building or a building that has lapsed for some reason. All buildings constructed after 1983 are registered. In some kommune areas, all buildings have been registered. A building is identified by its building number, which is unique across kommune boundaries. Every building has a building status that gives its condition at the last registration. History is also stored for this. A building has one or more usage units that describe logical units within the building (flats, premises). Each of these can have its own link to an address and a matrikkelenhet. For buildings, certain changes are registered so that it is possible to see what each change meant for the building. This applies to conversions and extensions that require building case processing. This is done by registering a "building change" when the change starts. When the building change is completed, the building is updated with values from the building change. Note: buildings over 15 square metres must be registered in the matrikkel. |
| Cultural environments | Shows delimited cultural environments from Riksantikvaren, that is, areas where several cultural heritage sites form a whole. Used by property developers to reveal conservation considerations that may affect utilisation and planning work. |
| Cultural Environment (Icons) | Point symbol version of the cultural environment layer that gives better visibility at smaller scales. |
| Cultural Environments (Polygons) | Polygon display of cultural environments from Riksantikvaren with precise geographic delimitation. Useful for seeing where plots lie wholly or partly within a cultural environment. |
| Fire Protection | Collective layer for fire-related conservation considerations from Riksantikvaren, including fire spread areas and conservation-worthy dense wooden-house areas. |
| Conservation-worthy dense wooden-house areas | Registered areas with dense wooden buildings that have national conservation value. Developers use the layer to assess requirements for preservation, materials and fire safety in a project. |
| Fire spread areas | Delimited areas with increased risk of fire spreading between buildings, typically dense older wooden buildings. Sets requirements for fire engineering design and measures in existing buildings. |
| Conservation-worthy Dense Wooden Areas (Icons) | Point symbol version of conservation-worthy dense wooden-house areas for easier display in overview maps. |
| Fire Spread Area (Icons) | Point symbol version of fire spread areas for clearer display at smaller scales. |
| Cultural heritage | Collective layer for cultural heritage from Riksantikvaren's database Askeladden, with localities, individual heritage sites and protection zones. Used to identify protected and conservation-worthy objects that may limit measures on a property. |
| Protection Zones | Shows protection zones around automatically protected cultural heritage under section 6 of the cultural heritage act. Within the zone, an exemption is required for measures, which is central when planning development. |
| Localities | Cultural heritage localities from Askeladden, that is, geographically delimited areas that bring together one or more individual heritage sites. Gives an overview of where protected and conservation-worthy cultural heritage is registered. |
| Individual Heritage Sites | Individual cultural heritage sites registered in Askeladden, such as burial mounds, building remains and stone settings. Useful for seeing the precise position of objects within a locality. |
| Localities (Icons) | Point symbol version of cultural heritage localities for clearer display in overview maps. |
| Individual Heritage Sites (Icons) | Point symbol version of individual heritage sites that gives better visibility at smaller scales. |
| SEFRAK Buildings | Buildings registered in SEFRAK, mainly constructed before 1900. The kommune must be notified of demolition or significant change, which developers must allow for in the early phase. |
| Protected Buildings | Buildings protected under the cultural heritage act, with strict restrictions on change, demolition and maintenance. Central for revealing measures that require an exemption from Riksantikvaren. |
Bedrock, derived maps, NiN
Derived bedrock maps from NGU for Natur i Norge: forecast for lime content in the bedrock and the extent of ultramafic rocks. Lime-rich and ultramafic ground gives distinctive vegetation and is a basis for habitat type mapping.
About the map layer
Derived bedrock maps from NGU for Natur i Norge: forecast for lime content in the bedrock and the extent of ultramafic rocks. Lime-rich and ultramafic ground gives distinctive vegetation and is a basis for habitat type mapping.
Drill cores
NGU's drill core archive: places where drill cores have been taken for bedrock, natural stone, metals and industrial minerals. An overview at a distance, individual cores when you zoom in.
About the map layer
NGU's drill core archive: places where drill cores have been taken for bedrock, natural stone, metals and industrial minerals. An overview at a distance, individual cores when you zoom in.
Geochemistry
NGU's national geochemistry database: field samples of loose masses, stream sediments and water with analysed elements, and survey points with geochemical measurements. The samples are shown as an overview at a distance and individually when you zoom in.
About the map layer
NGU's national geochemistry database: field samples of loose masses, stream sediments and water with analysed elements, and survey points with geochemical measurements. The samples are shown as an overview at a distance and individually when you zoom in.
Geosites, GNIST
NGU's register of geosites: localities with geological value for teaching, research, outdoor recreation and geotourism, shown as polygons and symbols at national, regional and local level depending on how far you have zoomed in.
About the map layer
NGU's register of geosites: localities with geological value for teaching, research, outdoor recreation and geotourism, shown as polygons and symbols at national, regional and local level depending on how far you have zoomed in.
Landforms, NiN
NGU's landform map following Natur i Norge: clay ravines, clay landslide hollows, kettle holes, fossil deltas and earth pyramids as polygons, symbols and lines, with geotope value from negligible to very high. The details appear when you zoom in.
About the map layer
NGU's landform map following Natur i Norge: clay ravines, clay landslide hollows, kettle holes, fossil deltas and earth pyramids as polygons, symbols and lines, with geotope value from negligible to very high. The details appear when you zoom in.
Permafrost
NGU's permafrost mapping: study areas with mapped permafrost and boreholes with temperature measurements in Norway and on Svalbard. The boreholes appear when you zoom in.
About the map layer
NGU's permafrost mapping: study areas with mapped permafrost and boreholes with temperature measurements in Norway and on Svalbard. The boreholes appear when you zoom in.
Tips
- Loose masses, Quick clay and Possibility of marine clay are also available in the Risk category for a combined risk assessment.
- NADAG is also available in Infrastructure: check whether existing geotechnical investigations from earlier projects exist near the plot.
- Combine Bedrock N250 with Loose masses to see whether an area is dominated by rock near the surface (stable) or deep loose masses (requires geotechnical work).
- Drainage lines and Soil moisture together give a picture of natural water flow, useful for surface water assessments in zoning plans.