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Type de documentTexte
PrécisionPublications_scientifiques
ThèmeAménagementsArchéologie
Contaminants associésCrues
ErosionGéochimie
GéomorphologieGestion
Interactions faune ou florePaléoenvironnements
RéglementationStocks
ThermieTransport solide
Versants
AuteurCosmidis J. et al.
Date de publication2014
ReferenceBiomineralization of iron-phosphates in the water column of Lake Pavin (Massif Central, France). Geochimica et Cosmochimica Acta, 126(0), 78.
RattachementInstitut de Minéralogie et de Physique des Milieux Condensés ? Université Pierre et Marie Curie
Période considéréeAnthropocene
Localisation OSLA1Pas d'information
Localisation OSLA2Pas d'information
Localisation OSLA3Pas d'information
Localisation OSLA4Pas d'information
Document numériséeOuiNon
FormatBMPJPGPDFPNGPPT
Nom du fichierCosmidis_J_et_al_-_2014.pdf
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Type Références Date Auteur
IMG Fig. 1. Geochemical profiles in the water column of lake Pavin. Temperature (T), conductivity (C25), pH, oxygen concentration (O2) and turbidity were measured in September 2011. 2014 Cosmidis J. et al.
IMG Fig. 2. XRD spectra of the samples from the water column (25, 56, 67 and 86 m depths) and the sediment from the bottom of Lake Pavin. The spectrum of a reference vivianite is also plotted. Besides viv... 2014 Cosmidis J. et al.
IMG Fig. 3. Fe K-edge experimental (solid line) and LC-LSF fitted (dotted line) EXAFS spectra (left) and real parts of Fourier transform (right) of the samples from the water column of Lake Pavin (25, 56,... 2014 Cosmidis J. et al.
IMG Fig. 4. Bar diagrams showing the results obtained from the least square - linear combination fitting of the Fe K-edge EXAFS spectra of the samples from the water column (at 25, 56, 67 and 86 m depths)... 2014 Cosmidis J. et al.
IMG Fig. 5. Ternary Fe, P, Si diagram of settling Fe-bearing particles collected in the water column of Lake Pavin (at 25, 56, 67 and 86 m depths). Fe, P and Si relative abundances were obtained from SEM-... 2014 Cosmidis J. et al.
IMG Fig. 6. Normalized XANES Fe K-edge spectra of the samples from 25, 56, 67 and 86 m depths in the water column and from the sediment at the bottom of the lake. Spectra of reference ferrous phosphate (v... 2014 Cosmidis J. et al.
IMG Fig. 7. Fe L2,3-edge STXM and TEM analyses of the samples collected at 56, 67 and 86 m in the water column. (a?c) Left: images at 702 eV. Middle: distribution of Fe(II). Brighter areas are enriched in... 2014 Cosmidis J. et al.
IMG Fig. 8. SEM images of Fe-bearing particles from 67 m depth collected on a filter. (a) Large scale view in SE mode. The majority of the particles are diatoms frustules, but some granulated iron-contain... 2014 Cosmidis J. et al.
IMG Fig. 9. STXM analyses of bacteria encrusted by an iron phase at 86 m depth in the water column of Lake Pavin. (a) Image at 700 eV (below the Fe L3-edge). (b) Iron map obtained by subtracting an OD-con... 2014 Cosmidis J. et al.
IMG Fig. 10. TEM images of polyphosphate-accumulating bacteria present in the samples collected at 25, 56 and 67 m depths. (a and b) TEM images of the samples collected at 25 and 56 m depths, respectively... 2014 Cosmidis J. et al.
IMG Fig. 11. Model of Fe and P cycling in the water column of Lake Pavin. Three mechanisms concentrating dissolved inorganic phosphate (PO4) in the monimolimnion of the lake are presented: (1) scavenging ... 2014 Cosmidis J. et al.