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Layer: IE_GSI_Karst_Landforms_40K_IE32_ITM (ID: 0)

Name: IE_GSI_Karst_Landforms_40K_IE32_ITM

Display Field: KARST_NAME

Type: Feature Layer

Geometry Type: esriGeometryPoint

Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P STYLE="margin:0 0 14 0;"><SPAN><SPAN>Karst is a type of landscape where the bedrock has dissolved and created features such as caves, enclosed depressions (sinkholes), disappearing streams, springs and turloughs (seasonal lakes). Limestone is the most common type of soluble rock. As rain falls it picks up carbon dioxide (CO2) in the air. When this rain reaches the ground and passes through the soil it picks up more CO2 and forms a weak acid solution. The acidified rain water trickles down through cracks and holes in the limestone and over time dissolves the rock. After traveling underground, sometimes for long distances, this water is then discharged at springs, many of which are cave entrances.</SPAN></SPAN></P><P STYLE="margin:0 0 14 0;"><SPAN><SPAN>There are many kinds of karst landforms, ranging in size from millimetres to kilometres. Dolines or sinkholes are small to medium sized enclosed depressions. Uvalas and poljes are large enclosed depressions. A swallow hole is the point where surface stream sinks underground. Turloughs are seasonal lakes. Springs occur where groundwater comes out at the surface, karst springs are usually much bigger than non-karst springs. Estevelles can act as springs or swallow holes. Dry valleys are similar to normal river valleys except they do not have a stream flowing at the bottom. A cave is a natural underground opening in rock large enough for a person to enter. Superficial Solution Features can be seen on rocks dissolved by rain and include pits, grooves, channels, clints (blocks) and grikes (joints). Please read the lineage for further details.</SPAN></SPAN></P><P STYLE="margin:0 0 14 0;"><SPAN><SPAN>This map shows the currently mapped karst landforms in Ireland.</SPAN></SPAN></P><P STYLE="margin:0 0 14 0;"><SPAN><SPAN>Geologists map and record information in the field. They also examine old maps and aerial photos.</SPAN></SPAN></P><P STYLE="margin:0 0 14 0;"><SPAN><SPAN>We collect new data to update our map and also use data made available from other sources such as academia and consultants. </SPAN></SPAN></P><P STYLE="margin:0 0 14 0;"><SPAN><SPAN>It is NOT a complete database and only shows areas that have been mapped by GSI, or submitted to the GSI. Many karst features are not included in this database. The user should not rely only on this database, and should undertake their own site study for karst features in the area of interest if needed.</SPAN></SPAN></P><P STYLE="margin:0 0 14 0;"><SPAN><SPAN>It is a vector dataset. Vector data portray the world using points, lines, and polygons (areas).</SPAN></SPAN></P><P STYLE="margin:0 0 14 0;"><SPAN><SPAN>The karst data is shown as points. Each point holds information on: Karst Feature Unique ID, Historic GSI Karst Feature ID, Karst Feature Type, Karst Feature Name, if it</SPAN></SPAN><SPAN><SPAN>’</SPAN></SPAN><SPAN>s within another Karst Feature, Location Accuracy, Data Source, Comments, Details and County.</SPAN></P></DIV></DIV></DIV>

Service Item Id: b945bec49b9f4a30b3288a341e312c8c

Copyright Text: Contains Irish Public Sector Data (Geological Survey Ireland) licensed under a Creative Commons Attribution 4.0 International (CC BY 4.0) licence.

Default Visibility: true

MaxRecordCount: 2000

Supported Query Formats: JSON, geoJSON, PBF

Min Scale: 500000

Max Scale: 1000

Supports Advanced Queries: true

Supports Statistics: true

Has Labels: false

Can Modify Layer: true

Can Scale Symbols: false

Use Standardized Queries: true

Supports Datum Transformation: true

Drawing Info: Advanced Query Capabilities:
HasZ: false

HasM: false

Has Attachments: false

HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Type ID Field: null

Supported Operations:   Query   Query Attachments   Generate Renderer   Return Updates

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