Post doc position : Understanding processes and time scales in ancient terrestrial and extraterrestrial (phosphate) materials through nanoscale investigations.
Context:
This post doc is part of a wider project COSMO-SAT (P.I. A.-M. Seydoux-Guillaume, Co-P.I. F. Vurpillot and M. Roskosz) from the PEPR Origins (https://pepr-origins.fr/en/). The objective of COSMO-SAT is to develop a new generation of tomographic atom probe dedicated to the analysis of terrestrial and extraterrestrial geological samples in order to significantly improve their quantitative and isotopic measurements at the nanometric scale. The project has several ambitious instrumental improvement objectives (https://pepr-origins.fr/en/projet/cosmo-sat/) to tackle various questions. One concerns extraterrestrial nano-geochronology and the understanding of complex samples from the Archean to the Hadean through isotopic analysis of very small volumes of chronometric minerals (zircons, baddeleyites, phosphates, etc.), and the study of processes at the nanoscale. This will be at the centre of the present Post doc (more details in the file attached).
Application:
Interested candidates should send a short CV before July 15th, 2026 (including the list of articles/communications) + a letter of motivation + at least one letter of recommendation, by email to anne.magali.seydoux@univ-st-etienne.fr
Starting date: November 2026 (flexible over a few months). Participation in the atom probe school in Rouen (early November 2026) is mandatory.
