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Platform > Environmental and paleo-environmental Physical caracterization

Dendrochronological measurements and xylological determination

CPEP Technical Pole

Office: -120M - Phone: +33 3 81 66 59 00
Mail: GIRARDCLOS Olivier

La Bouloie - Propédeutique building - Building wing M - Floor -2 (-20xM)

Brief summary of the activity
The unit brings together technical and human resources for the acquisition, analysis and management of data acquired from wood sampled in the field in the context of various research themes:
-  Dating by dendrochronology and taxonomic identification on archaeological sites and historical monuments,
-  Paleoclimatic and paleoenvironmental restoration focusing on the structure of old-growth forests,
-  Study of radial growth in specific dendro-ecological contexts,
-  Reconstruction of the history of dendrochemical pollution.

The analyzes or preparations
-  Measurement of ring widths and other anatomical features
-  Specific calculations for synchronism research and dating by dendrochronology
-  In collaboration with optic UT, taxonomic identification of wood on waterlogged, carbonized or permineralized materials. Observation by digital microscopy.
-  Sampling of rings for chemical studies
-  Specific data analysis scripts for paleo-environmental reconstructions
-  Maintenance of the Sylphe dendrochronological data management system

List of devices
-  2 Lintab / TSAP-Win ring width measuring chains
-  Specific calculation and data management software SYLPHE
-  Leica M3 magnifier with digital camera and LAS software
-  Lightweight dendrometry tooling

Relationships with other Technical Units (TUs)
The unit contributes by setting up protocols adapted to several functional operating chains concerned by the woody materials in the field for recovery.
With the wood workshop TU, sampling (coring, hammer sampling, chainsaw) and contextualization (mapping, taxonomic identification, dendrometric measurements) of samples in the field. Formatting wood surface preparation for anatomical observation, cutting of rings for chemical analysis.
With the washing units sieving sorting and study of bio-geo-archaeological objects, preparation and macroscopic description, drawing, photography of wooden objects, technical study.
With the dry and cold storage units, conservation and collection of material.
With the optical unit, anatomical observation of wood in transmitted (waterlogged wood) and reflected light (charcoal, anthracology). Observations in digital optics: 3D to 2D restitution of rough surfaces, recomposition by vignetting, image measurement and analysis (dendro-anthracology).
With ACE Technical Pole, elemental chemistry analysis of wood composition.

Access conditions:
Contact the person in charge, access to training, student internships. Occasional services and academic services included in a scientific issue.

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