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Layer: IE_GSI_Quaternary_Geomorphology_Erratic_Carriage_Sink_50K_IE26_ITM (0)

Name: IE_GSI_Quaternary_Geomorphology_Erratic_Carriage_Sink_50K_IE26_ITM

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Description: In terms of time scale in geology, Quaternary is the present-day time and it began 2.6 million years ago. A lot of this time period relates to the Ice Age. Quaternary geomorphology is the record of landscape features that were created in the last 2.6 million years. In Ireland, movement of glaciers and ice sheets created many of these features. An erratic is a rock which has been moved by ice and deposited in another location. Erratics are identified as the erractic rock type is different to the usual rocks found in that location.Geologists study the composition of erratics and can determine where the rock came from (the source). Once the source is known, the direction of ice flow can be determined (Inferred Erratic Path). The end of these erratic flow paths are termed erratic limits.We collect new data to update our map and also use data from other sources. Lines are drawn on a map to show the paths and limits.This map shows the currently mapped Erratic Carriage Sinks in Ireland.This map is to the scale 1:50,000. This means it should be viewed at that scale. When printed at that scale 1cm on the map relates to a distance of 500m.It is a vector dataset. Vector data portray the world using points, lines, and polygons (areas).The data is shown as lines. Each line holds information on the glacial landform type, data source, rock unit name and its unique identifier.

Service Item Id: 78c491406a0d4651ba11a9da99a29942

Copyright Text: Geological Survey Ireland

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Layer: IE_GSI_Quaternary_Geomorphology_Erratic_Carriage_Source_50K_IE26_ITM (1)

Name: IE_GSI_Quaternary_Geomorphology_Erratic_Carriage_Source_50K_IE26_ITM

Display Field: GL_TYPE

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Description: In terms of time scale in geology, Quaternary is the present-day time and it began 2.6 million years ago. A lot of this time period relates to the Ice Age. Quaternary geomorphology is the record of landscape features that were created in the last 2.6 million years. In Ireland, movement of glaciers and ice sheets created many of these features. An erratic is a rock which has been moved by ice and deposited in another location. Erratics are identified as the erractic rock type is different to the usual rocks found in that location.Geologists study the composition of erratics and can determine where the rock came from (the source). Once the source is known, the direction of ice flow can be determined (Inferred Erratic Path). The end of these erratic flow paths are termed erratic limits. We collect new data to update our map and also use data from other sources. Areas are drawn on a map to show where sources are found.This map shows the currently mapped Erratic Carriage Sources in Ireland.This map is to the scale 1:50,000. This means it should be viewed at that scale. When printed at that scale 1cm on the map relates to a distance of 500m.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 glacial landform type, data source, rock unit name and its unique identifier.

Service Item Id: 78c491406a0d4651ba11a9da99a29942

Copyright Text: Geological Survey Ireland

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Layer: IE_GSI_Quaternary_Geomorphology_Subglacial_Lineation_Striae_50K_IE26_ITM (2)

Name: IE_GSI_Quaternary_Geomorphology_Subglacial_Lineation_Striae_50K_IE26_ITM

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Description: In terms of time scale in geology, Quaternary is the present-day time and it began 2.6 million years ago. A lot of this time period relates to the Ice Age. Quaternary geomorphology is the record of landscape features that were created in the last 2.6 million years. In Ireland, movement of glaciers and ice sheets created many of these features. Subglacial landforms are created beneath the ice. They were created during ice expansion. Striae (Glacial striations) are scratches or gashes cut into bedrock by glacial movement, usually by particles embedded in glacier ice. They provide a reliable record of ice flow direction. Geologists map and record evidence during field visits, from air photographs and from Digital Elevation Models (DEMs). Points are added to the map to show where features are found. We collect new data to update our map and also use data from other sources.This map shows the currently mapped Striae in Ireland.This map is to the scale 1:50,000. This means it should be viewed at that scale. When printed at that scale 1cm on the map relates to a distance of 500m.It is a vector dataset. Vector data portray the world using points, lines, and polygons (areas).The data is shown as points. Each point holds information on the glacial landform type, data source, data reference and its unique identifier.

Service Item Id: 78c491406a0d4651ba11a9da99a29942

Copyright Text: Geological Survey Ireland

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Layer: IE_GSI_Quaternary_Geomorphology_Subglacial_Lineation_Large_50K_IE26_ITM (3)

Name: IE_GSI_Quaternary_Geomorphology_Subglacial_Lineation_Large_50K_IE26_ITM

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Description: In terms of time scale in geology, Quaternary is the present-day time and it began 2.6 million years ago. A lot of this time period relates to the Ice Age. Quaternary geomorphology is the record of landscape features that were created in the last 2.6 million years. In Ireland, movement of glaciers and ice sheets created many of these features. Subglacial landforms are created beneath the ice. They were created during ice expansion. Crags are formed when a glacier or ice sheet passes over an area that contains a particularly strong rock. The force of the glacier erodes the surrounding softer material, leaving a rocky streamlined hill (crag). The crag often serves as a partial shelter to softer material in the aftermath of the glacier. A tapering tail of material is often left behind on the down-ice side of the crag. Where the tail is formed of weaker rock, the feature forms a streamlined bedrock ridge.Drumlins are smooth, oval-shaped hills, shaped like a half-buried egg. They are made up of glacial till. As the glaciers retreated, they left these deposits behind. The exact process of drumlin formation is unknown.Mega-scale glacial lineations, like drumlins, are typically smooth hills of subglacially-deposited material, but are much longer. They are produced beneath zones of fast-flowing ice.Geologists map and record evidence during field visits, from air photographs and from Digital Elevation Models (DEMs). Lines are drawn on a map to show where features are found. We collect new data to update our map and also use data from other sources.This map shows the currently mapped large Subglacial Lineations in Ireland.This map is to the scale 1:50,000. This means it should be viewed at that scale. When printed at that scale 1cm on the map relates to a distance of 500m.It is a vector dataset. Vector data portray the world using points, lines, and polygons (areas).The data is shown as lines. Each line holds information on the glacial landform type, data source, data reference and its unique identifier.

Service Item Id: 78c491406a0d4651ba11a9da99a29942

Copyright Text: Geological Survey Ireland

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Layer: IE_GSI_Quaternary_Geomorphology_Subglacial_Moraines_50K_IE26_ITM (4)

Name: IE_GSI_Quaternary_Geomorphology_Subglacial_Moraines_50K_IE26_ITM

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Description: In terms of time scale in geology, Quaternary is the present-day time and it began 2.6 million years ago. A lot of this time period relates to the Ice Age. Quaternary geomorphology is the record of landscape features that were created in the last 2.6 million years. In Ireland, movement of glaciers and ice sheets created many of these features. Subglacial landforms are created beneath the ice. They were created during ice expansion. A moraine is material left behind by a moving glacier. This material is usually loose sediment and rock debris (glacial till).Geologists map and record evidence during field visits, from air photographs and from Digital Elevation Models (DEMs). Lines are drawn on a map to show where features are found. We collect new data to update our map and also use data from other sources.This map shows the currently mapped large Subglacial Moraines in Ireland.This map is to the scale 1:50,000. This means it should be viewed at that scale. When printed at that scale 1cm on the map relates to a distance of 500m.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 glacial landform type, data source, data reference and its unique identifier.

Service Item Id: 78c491406a0d4651ba11a9da99a29942

Copyright Text: Geological Survey Ireland

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Layer: IE_GSI_Quaternary_Geomorphology_Meltwater_Landforms_50K_IE26_ITM (5)

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Description: In terms of time scale in geology, Quaternary is the present-day time and it began 2.6 million years ago. A lot of this time period relates to the Ice Age. Quaternary geomorphology is the record of landscape features that were created in the last 2.6 million years. In Ireland, movement of glaciers and ice sheets created many of these features. Meltwater landforms are created at the ice margin. They were created during ice retreat. Eskers are long sinuous ridges, made up with deposits of fluvio-glacial material.Geologists map and record evidence from the shallow sediments visible at or near the surface, from air photographs and from Digital Elevation Models (DEMs). This data along with boreholes (a deep narrow round hole drilled in the ground) and geophysics help to create the map. Lines are drawn on a map to show where features are found.We collect new data to update our map and also use data from other sources.This map shows the currently mapped Meltwater landforms in Ireland.This map is to the scale 1:50,000. This means it should be viewed at that scale. When printed at that scale 1cm on the map relates to a distance of 500m.It is a vector dataset. Vector data portray the world using points, lines, and polygons (areas).The data is shown as lines. Each line holds information on the glacial landform type, classification, data source, data reference, Elevation Start Landform (m), Elevation End Landform (m) Azimuth length of Landform (deg), Slope change length of Landform (%) and its unique identifier.

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Layer: IE_GSI_Quaternary_Geomorphology_Deglacial_Landforms_50K_IE26_ITM (6)

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Description: In terms of time scale in geology, Quaternary is the present-day time and it began 2.6 million years ago. A lot of this time period relates to the Ice Age. Quaternary geomorphology is the record of landscape features that were created in the last 2.6 million years. In Ireland, movement of glaciers and ice sheets created many of these features. Deglacial landforms are created at the ice margin. They were created during ice retreat. A moraine is material left behind by a moving glacier. This material is usually loose sediment and rock debris (glacial till). Kame terraces, deltas and fans are all ice marginal landforms deposited by water issuing from a glacier.Geologists map and record evidence from the shallow sediments visible at or near the surface, from air photographs and from Digital Elevation Models (DEMs). This data along with boreholes (a deep narrow round hole drilled in the ground) and geophysics help to create the map. Areas are drawn on a map to show where features are found.We collect new data to update our map and also use data from other sources.This map shows the currently mapped Deglacial landforms in Ireland.This map is to the scale 1:50,000. This means it should be viewed at that scale. When printed at that scale 1cm on the map relates to a distance of 500m.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 glacial landform type, name, data source, data reference and its unique identifier.

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Copyright Text: Geological Survey Ireland

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Layer: IE_GSI_Quaternary_Geomorphology_Mountain_Glaciation_Corries_50K_IE26_ITM (7)

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Description: In terms of time scale in geology, Quaternary is the present-day time and it began 2.6 million years ago. A lot of this time period relates to the Ice Age. Quaternary geomorphology is the record of landscape features that were created in the last 2.6 million years. In Ireland, movement of glaciers and ice sheets created many of these features. A corrie (cirque) is a half open, steep-sided round hollow made in the side of a mountain by the action of a glacier.Geologists map and record evidence during field visits, from air photographs and from Digital Elevation Models (DEMs). Lines are drawn on a map to show where features are found.We collect new data to update our map and also use data from other sources.This map shows the currently mapped Corries in Ireland.This map is to the scale 1:50,000. This means it should be viewed at that scale. When printed at that scale 1cm on the map relates to a distance of 500m.It is a vector dataset. Vector data portray the world using points, lines, and polygons (areas).The data is shown as lines. Each line holds information on the glacial landform type, name, data source, data reference, backwall depth (m) and its unique identifier.

Service Item Id: 78c491406a0d4651ba11a9da99a29942

Copyright Text: Geological Survey Ireland

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Layer: IE_GSI_Quaternary_Geomorphology_Mountain_Glaciation_Trimlines_50K_IE26_ITM (8)

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Description: In terms of time scale in geology, Quaternary is the present-day time and it began 2.6 million years ago. A lot of this time period relates to the Ice Age. Quaternary geomorphology is the record of landscape features that were created in the last 2.6 million years. In Ireland, movement of glaciers and ice sheets created many of these features. A trimline is a clear line on the side of a valley formed by a glacier. The line marks the most recent highest extent of the glacier. The line may be visible due to changes in color to the rock or to changes in vegetation on either side of the line.Geologists map and record evidence during field visits, from air photographs and from Digital Elevation Models (DEMs). Lines are drawn on a map to show where features are found.We collect new data to update our map and also use data from other sources.This map shows the currently mapped trimlines in Ireland.This map is to the scale 1:50,000. This means it should be viewed at that scale. When printed at that scale 1cm on the map relates to a distance of 500m.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 glacial landform type, name, data reference, captured altitude(m, minimum altitude(m) ) and its unique identifier.

Service Item Id: 78c491406a0d4651ba11a9da99a29942

Copyright Text: Geological Survey Ireland

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