Extraction and concentration of organic matter (OM) from soils, sediments and rocks
by acid attacks (HCl and HF) and mounting of slides
by densimetry (dense liquors) and inclusion of densimetric concentrates in resin followed by polishing of inclusions
Analysis of palynofacies by photonic microscopy in natural transmitted light and UV
Measurement of the reflectivity of vitrinite (on a hundred particles) by photonic microscopy in monochromatic natural reflected light (at 546 nm) and calibration against a standard
Objectives :
Palynofacies: Semi-quantification of organic constituents of soils and sediments and identification of their botanical precursors
Reflecting power of vitrinite: Characterization of the state of thermal evolution (rank) of the OM of soils, sediments and rocks and its petrogenic potential.
Pre-treatments :
Grinding if necessary, acid attacks, preparation of slides, concentration of OM by dense liquor, inclusion in resin
Results obtained :
Relative and semi-absolute quantities of organic constituents in the treated samples, reflectograms