Management
Coastline
Coastline
Coastline
Coastline
Coastline
Physical Environment
GEBCO Bathymetric Contours
100m - 500m depth
600m - 1000m depth
1100m - 1500m depth
1600m - 2000m depth
2100m - 2500m depth
2600m - 3000m depth
3100m - 3500m depth
3600m - 4000m depth
4100m - 4500m depth
4600m - 5000m depth
Coastal Geology
A10 - Plutonic rock
A11 - Ultramafite and mafic rocks
A12 - Intermediate rock (diorite, gabbro-diorite)
A13 - Granitic rocks
A20 - Volcanic rocks
A21 - Lava (basalts)
A23 - Volcano-sedimentary formations
A30 - Metamorphic rocks
A31 - Gneiss
A32 - Schist
A33 - Marble
A34 - Quartzite
A40 - Sedimentary rocks
A41 - Sandstone
A42 - Marl and consolidated clay
A43 - Limestone
A44 - Chalk
B00 - Non cohesive formations
C00 - No information
D00 - Out of nomenclature
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Even seemingly strong sections of coastline, such as these cliffs on the Dingle Peninsula, are prone to erosion.
Coastline
The coastline of Ireland is a complex environment where land meets sea. Its shape changes over time, influenced by currents, weather, erosion, and human impacts to name a few.
Sea dunes located 20 nautical miles off the south coast of Co. Wexford are one example of seabed features.
Bathymetry of Irish Waters: GEBCO Contours
The bathymetry around Ireland is diverse, with smooth, shallow sea floor close to the coast, and steep slopes of the continental margin further to the south and west.
The Burren in Co. Clare attracts geologists from all over the world
Coastal Geology
Geology is a description of the solid matter which composes the Earth. An understanding of coastal rock type is fundamental in the study of coastal stability. Coastal geology can be most easily appreciated in cliff exposures, where various strata may be identified. The West Clare coast is internationally renowned among geologist because Carboniferous age rock structures are exposed onshore and a section through 330 million year old limestone can be studied.
>> More Information
Among details displayed in the OSI / OSNI 1:50,000 Webmap Series are names of channels, such as Bull's Mouth in Blacksod Bay, Co. Mayo.
Ordnance Survey Basemaps
Ordnance Survey of Ireland and Northern Ireland provide base information such as towns, roads, counties and rivers for the Republic and Northern Ireland. In MIDA, the 1:450,000 scale basemap changes to the more detailed 1:50,000 scale basemap as you zoom in to coastal areas.
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