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Geological Mapping

Geological Mapping

​​​​​​​​​​​​The Geological Mapping programme creates maps that depict the rocks and sub-soils of the onshore area of Ireland.  We collect new data by field surveying and borehole drilling, and combine them with existing mapping to produce map products at various scales and levels of complexity.  Our aim is a seamless, maintained, online data set of bedrock and subsoils geological mapping that is reliable, accessible and meets the requirements of all users. ​

The Geological Mapping Programme activities comprise Quaternary field mapping and Bedrock data compilation, maintaining the national geotechnical database, drilling and answering public enquiries.

Explore the data and maps compiled by the Geological Mapping Programme.

Research within the Geological Mapping Programme mainly contributes to improving the understanding of the geology of Ireland.
We also participate in European geoscience research projects and initiatives where Irish interests are concerned.
 Mapping of Areas in Wexford 2020​Taking advantage of the extensive and detailed information generated over the course of the Tellus Project, Quaternary mapping will start in July 2020 in rural parts of Co Wexford. 18/06/2020 23:00:00 staff presented Flash Talks at Oxford Geoheritage Virtual Conference (May 2020)GSI staff presented Flash Talks at Oxford Geoheritage Virtual Conference in May 2020. now on YouTube Channel10/05/2020 23:00:00 Stratigraphy and facies evolution on the Galway-Roscommon shelf28/02/2020 00:00:00 City Geo-Environmental Challenges as addressed by Geological Survey Ireland10/07/2019 23:00:00