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Service Description: There are more than 1,200 geological formations and members (rock units) in the 1:100,000 Bedrock Geology map. Rock properties such as colour, grain size and type, origin, fossil and mineral content are used to define formations and members. A lot of these properties are not relevant for groundwater flow through the rocks (for example, type of fossil).
To produce this dataset, all of the formations and members were assessed and assigned to one of 27 'Rock Unit Groups' that are significant for the way that groundwater might flow through those rocks. The Rock Unit Groups also take into account geological age.
This map is to the scale 1:100,000. This means it should be viewed at that scale. When printed at that scale 1cm on the map relates to a distance of 1km.
It is a vector dataset. Vector data portray the world using points, lines, and polygons (areas).
The data is shown as polygons. Each polygon holds information on the rock unit group name, code and a unique id.
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Description: There are more than 1,200 geological formations and members (rock units) in the 1:100,000 Bedrock Geology map. Rock properties such as colour, grain size and type, origin, fossil and mineral content are used to define formations and members. A lot of these properties are not relevant for groundwater flow through the rocks (for example, type of fossil). To produce this dataset, all of the formations and members were assessed and assigned to one of 27 'Rock Unit Groups' that are significant for the way that groundwater might flow through those rocks. The Rock Unit Groups also take into account geological age. This map is to the scale 1:100,000. This means it should be viewed at that scale. When printed at that scale 1cm on the map relates to a distance of 1km.It is a vector dataset. Vector data portray the world using points, lines, and polygons (areas).The data is shown as polygons. Each polygon holds information on the rock unit group name, code and a unique id.
Service Item Id: 1de322b45041475c8fb288b9d3c70903
Copyright Text: Geological Survey Ireland
Spatial Reference:
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Spatial Reference: 2157
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Spatial Reference: 2157
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Units: esriMeters
Document Info:
Title: IE GSI Hydrostratigraphic Rock Unit Groups 100k Ireland (ROI) ITM
Author:
Comments: There are more than 1,200 geological formations and members (rock units) in the 1:100,000 Bedrock Geology map. Rock properties such as colour, grain size and type, origin, fossil and mineral content are used to define formations and members. A lot of these properties are not relevant for groundwater flow through the rocks (for example, type of fossil). To produce this dataset, all of the formations and members were assessed and assigned to one of 27 'Rock Unit Groups' that are significant for the way that groundwater might flow through those rocks. The Rock Unit Groups also take into account geological age. This map is to the scale 1:100,000. This means it should be viewed at that scale. When printed at that scale 1cm on the map relates to a distance of 1km.It is a vector dataset. Vector data portray the world using points, lines, and polygons (areas).The data is shown as polygons. Each polygon holds information on the rock unit group name, code and a unique id.
Subject: The Hydrostratigraphic Rock Unit Groups map is a simplified version of the Bedrock Geology map. It is created because not all of the properties of the rocks that are used to create the Bedrock Geology map are needed to help to understand how groundwater flows through the rocks, which rocks produce particular groundwater chemistries, or which rocks are best at conducting or storing heat.
Groundwater is the water that soaks into the ground from rain and can be stored beneath the ground. An aquifer is a body of rock and/or sediment that holds groundwater. The Hydrostratigraphic Rock Unit Groups map is used to determine aquifer classes.
Aquifer maps help us locate groundwater resources which can be used to supply drinking water. Knowing where and in what amounts groundwater can be found is important. It helps us plan where water supplies for communities and towns can be developed. The data can also help to protect drinking water. Rock properties and structures such as faults impact how water and/or pollutants move below the surface. Drinking water can be protected by locating potential polluting operations, such as landfills, away from groundwater.
Geothermal energy is the energy stored in the form of heat beneath the surface of the earth. It can be used to supply heat and hot water. It can also be used to cool a house by removing surplus heat energy and putting it into the ground. Aquifer maps along with subsoil and bedrock maps are used to help decide if the ground under a site is suitable for geothermal energy extraction.
Category:
Keywords: Ireland,IE/GSI,Geology,hydrogeology,groundwater,bedrock
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