Researcher in ostradology and chronostratigraphy M/F

Job Description

Missions

Develop and validate an alternative method of radiocarbon dating in lagoon-coastal environments using ostracods in order to improve the resolution of Palaeoenvironmental Age-Depth Models (PADM).

Activity

 Activity 1 : Sedimentary and ostracodological analysis
o Describe sediment cores and discriminate stratigraphic units;
o Select and collect sediment samples;
o Sieve (wet and dry) sediment samples;
o Identify, sort and prepare organic materials for radiocarbon dating (Posidonia, seeds, charcoal, etc.);
o Select and pick adult valves of Cyprideis torosa (ostracod) for radiocarbon dating;
o Pick ostracods and determine taxa in order to define assemblages and biozones.
 Activity 2 : Chronological analysis and PADMs
o Compare radiocarbon ages obtained from different supports in order to estimate local reservoir effects (ΔR);
o Study the spatial and temporal variability of reservoir effects in lagoonal environments.
o Study the ecological tolerances of ostracod assemblages in order to define biozones;
o Construct age-depth models that integrate uncertainties, sedimentary hiatuses and reservoir effects;
o Combine chronological, stratigraphic and biological data in order to draw up PADM.
 Activity 3 : Valorisation of scientific research and laboratory support
o ◦Write thematic bibliographic reviews;
o Produce graphical representations of results (stratigraphic logs, PADM, etc.);
o Write and disseminate scientific results (reports, scientific blog posts, scientific articles, etc.);
o Participate in student supervision and laboratory consumables management.

Your Profil

Skills

Required skills
 Knowledge/expertise
– Strong knowledge of lagoon-coastal palaeoenvironments and harbour geoarchaeology.
– Expertise in the taxonomy, ecology and biogeography of Mediterranean lagoon-coastal ostracods, with particular focus in the euryhaline ostracod Cyprideis torosa.
– Expertise in the paleoenvironmental age-depth models (principles, methods and interpreting).

 Know-how
– Expertise in opening and sampling single-run cores (Amaury corer).
– Expertise in sediment and ostracodological sample analysis protocols.
– Proficiency in Adobe Illustrator, Strater, XLStat (or equivalent) and OxCal online software.
– Ability to independently write reports, blog posts and scientific articles.
– Class B driving licence.

 Interpersonal skills
– Ability to communicate, listen and work in a multidisciplinary team.
– Independence, initiative and ability to take responsibility.

Your Work Environment

Context :
The agent will be employed as part of the ANR-FNS Trans-Portus project, which offers a new interpretation of ancient harbours based on a transdisciplinary and multi-scale approach that integrates infrastructure, harbour dynamics and coastal landscape transformations.
The laboratory comprises eighty people located on two sites and is under the supervision of the CNRS, Lyon 2 University, Lyon 1 University, INRAP and the Ministry of Culture. It is also affiliated with the Maison de l'Orient et de la Méditerranée (MOM) and the MSH Lyon Saint-Etienne.
Job location at the Radiocarbon Dating Centre (Claude Bernard Lyon 1 University, 40 Boulevard Niels Bohr – 69622 VILLEURBANNE cedex) with stays at the Ardèche annex of the Archéorient laboratory (Commanderie des Templiers de Jalès, 07460 Berrias-et-Casteljau) where the sediment cores are stored.

Compensation and benefits

Compensation

3,071 euros gross depending on experience

Annual leave and RTT

44 jours

Remote Working practice and compensation

Pratique et indemnisation du TT

Transport

Prise en charge à 75% du coût et forfait mobilité durable jusqu’à 300€

About the offer

About the CNRS

The CNRS is a major player in fundamental research on a global scale. The CNRS is the only French organization active in all scientific fields. Its unique position as a multi-specialist allows it to bring together different disciplines to address the most important challenges of the contemporary world, in connection with the actors of change.

CNRS

The research professions