PhD position in LA-ICPMS U-Pb carbonate dating at
Trinity College Dublin, Ireland


The Department of Geology at Trinity College Dublin, Ireland, seeks applicants for a fully-funded 4 year PhD in U-Pb LA-ICPMS carbonate dating. The approach involves image mapping by laser-ablation quadrupole-ICPMS, which can circumvent the problems of low U contents and/or high initial Pb in calcite/dolomite by identifying zones of high U/Pb ratio. U-Pb ages are generated from these LA-ICPMS image maps and where there is a sufficient spread in U/Pb age ratio, age uncertainties as low as 1% can be obtained. A post-doctoral researcher has already commenced method development work on this project.

The successful candidate will apply these U-Pb dating techniques to carbonate unknowns. Dating targets include:

  • Carbonates associated with key time intervals in Earth history, particularly those associated with ancient climatic changes (e.g. Neoproterozoic carbonate sequences in Namibia);
  • dating carbonate veins and cements in carbonate-hosted ore bodies such as the Irish Pb-Zn orefield;
  • vein calcite which constrains the timing of deformation in deformed carbonate successions (the Alps, Irish Variscan);
  • constraining the timing of reservoir-degrading cementation events in hydrocarbon basins (removal of porosity by diagenetic calcite).

Applications are invited from highly-motivated and high-achieving geoscience graduates with a first or an upper second class division first degree (or equivalent) and who have been ordinarily resident in the EU/EEA/Swiss Confederation for a minimum of the last 3 years. Experience of independent geological fieldwork and laboratory work are highly advantageous. The successful candidate will join a vibrant geochemistry group at Trinity College Dublin comprising seven principal investigators, seven post-doctoral researchers and over twenty PhD students.The department has 2 LA-ICPMS instruments, a dedicated solution-ICPMS facility with a clean laboratory along with full mineral separation and sample preparation facilities.
(http://www.tcd.ie/Geology/research/facilities/analyticallabs/).

The position is fully funded for four years and includes a tax-free stipend of 18,000/year along with full provision for fees, together with conference travel, laboratory and field work costs. To apply, please send a full CV and contact details for 3 academic referees, together with a letter of motivation, to Dr David Chew at chewd@tcd.ie from whom further particulars may also be requested. The deadline for applications is 20th April 2017 for a 1st September 2017 start. Applications received after this deadline can only be evaluated if the position is not filled.

posted: 01 March 2017     Please mention EARTHWORKS when responding to this advertisement.