​​​​​​​​​​​​​​​​​​​​​​​​​​​The Tellus survey is a national programme to gather geochemical and geophysical data across Ireland – in other words, to examine the chemical and physical properties of our soil, rocks and water.

Tellus is undertaken by Geological Survey Ireland and is funded by the Department of Communications, Climate Action and Environment. All data from Tellus is made available free of charge online.

Tellus involves two types of surveying – airborne geophysical surveying using a low-flying aircraft and ground-based geochemical surveying of soil, stream water and stream sediment.

Tellus has established a Product Development workstream in order to produce more focused, user-centric data products, the need for which has been identified through stakeholder consultation, independent reviews of Tellus and government policy. Product development is undertaken under five main themes: mineral pro​spe​ctivity, smart agriculture, environment and health, climate action and education.

To date, Tellus surveying has been completed in Northern Ireland (2004–2008) and the border region of Ireland (2011–2013). Tellus airborne surveying has been completed in the north midlands region of Ireland (2014–2015), the eastern midlands region (2015), the west of Ireland (2016–2017) across counties Limerick, north Tipperary and west Cork (2018–​2019) and most recencelty in south east Ireland (2019). The Tellus airborne geophysical survey has now mapped 75% of the country.​

Details for the 2020 Tellus fieldwork season will be announced in due course.

Tellus collects geochemical and geophysical data that will inform the management of Ireland’s environment and natural resources.

Tellus undertakes research with a range of collaborators in order to maximise the societal and economic benefits of the geochemical and geophysical data. Explore the themes to see how Tellus​ data is being used to benefit society. showcasing projects online at EGU 2020The annual European Geological Union (EGU) General Assembly usually brings 16,000 attendees to Vienna for one of the largest geoscience meetings in the world. This year it moved online for EGU2020: Sharing Geoscience Online from 4 – 8 May, Geological Survey Ireland participated in a number of sessions, listed below with links to abstracts06/05/2020 23:00:00 Tellus Project donates lab PPE to St James HospitalFollowing an urgent appeal from doctors in St James Hospital, Dublin, seeking donations of personal protective equipment (PPE) from people working in various industries including food and pharmaceuticals, GSI Tellus project donated lab PPE.31/03/2020 23:00:00 Research Coordination Group 2019 Annual Report28/06/2020 23:00:00 Characterization and Geochemically Appropriate Levels for Soil Recovery Facilities27/02/2020 00:00:00