​​​​​​​​​​​​​​​​​​​​​​​​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 the 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.

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), and most recently the west of Ireland (2016-2017). The Tellus airborne geophysical survey has now mapped 60% of the country.

The Tellus aircraft has completed surveying in Limerick and north Tipperary. Surveying is still ongoing in the west Cork region and is expected to be complete by May 2019. From late May/June until late autumn the Tellus aircraft will move to the south east of Ireland; into counties Carlow, Wexford, Wicklow and neighbouring parts of south Kildare, south east Kilkenny and Waterford.

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.

Find out more about our ground and airborne field operations and view our data products.

The ​Tellus survey aircraft  is due to complete flying in the west Cork region in late May 2019 (weather permitting). ​​​ The survey aircraft will then move into south east Ireland from early June until late autumn 2019.

​​​​​​​​​​​​​​​​​​​The GSI's Tellus Geochemistry programme, is currently seeking the provision of ​technical services for soil sample collection. Sample sites are located in predominantly rural areas within the north midlands region of Ireland. The work is to be carried out by end September 2019.

The tender deadline is 12:00 Friday 14 June 2019 and the RFT document can be found her​e​.​

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. Airborne Survey sets off over South East IrelandThe next phase of the Tellus Survey – a nationwide programme of the Geological Survey Ireland, which collects geochemical and geophysical data on rocks, soil and water across Ireland – has officially taken off over the south east of Ireland. To gather this data, a low-flying plane equipped with state-of the-art instruments will soar over the skies 04/06/2019 23:00:00 Collection of soil samples for the Tellus Geochemistry Programme 2019Geochemical infill soil sampling for the Tellus project of 886 sites in the north midlands region of Ireland. The work is to be carried between June and September 2019.27/05/2019 23:00:00 Geochemistry Instructional Videos25/09/2018 23:00:00 Notes06/09/2018 23:00:00