Abstract
Superficial sediments from the Lac du Bouchet were analysed to study the degradation processes which affect sedimentary organic matter in an oligotrophic lacustrine environment. This was undertaken by the study of the evolution of the organic matter composition, in terms of both early diagenesis and any possible variations in organic inputs. The petrographical study of the resistant organic matter shows that some marked variations in the type, nature and abundance of organic inputs have occurred through time over the last 2500 years. The geochemical study of the bulk organic matter and the distribution of alkalisoluble components indicate that the effects of early diagenesis are only visible when the organic inputs are unchanged (<1400 years). Due to the very low sedimentation rates, methanogenesis seems only to affect the autochthonous (algal, phytoplanktonic) organic matter which consists of a degraded and amorphous organic matter, whereas the organic matter deriving from the surrounding basin has been partially or totally degraded before its deposition.
This is a preview of subscription content, log in via an institution to check access.
Preview
Unable to display preview. Download preview PDF.
References
Bertrand, P., Brocero, S., Lallier-Vergès E., Tribovillard N. and Bonifay E. (1992). Sédimentation organique lacustre et paléoclimats du Pléistocène aux moyennes latitudes: exemple du Lac du Bouchet, Haute Loire, France (preliminary results). Bull. Soc. Géol. Fr., 163 (4), 427–433.
Bonifay E. and Truze E. (1987). Dynamique, sédimentation et évolution des lacs de maars: l’exemple du Velay, In Documents du C.E.R.L.A.T. no1, E. BONIFAY (ed.), pp. 29–64.
Bonifay E., Creer K. M. et al., (1987). A study of the Holocene and Late Würmian sediments of Lac du Bouchet (Haute-Loire, France): First Results, In Climate-History, Periodicity and Predictability. M.R. RAMPINO CO. (ed.), New York, pp. 588. *** DIRECT SUPPORT *** A04BD006 00008
Boussafir M., Lallier-Vergès E., Bertrand P. and Badaut-Trauth D. (1994). Ultrastructural composition of selected organic matter from sediments of the Kimmeridgian Clay Formation of Yorkshire (G.B.). Bull. Soc. Géol. Fr., 165(4), 355–363.
Canfield D.E. (1989). Sulfate reduction and oxic respiration in marine sediments: implications for organic carbon preservation in euxinic environments. Deep-Sea Research, 36 (1), 121–138.
Derenne S., Largeau C., Berkaloff C., Rousseau B., Wilhelm C and Hatcher P.G. (1992a). Non-hydrolisable macromolecular constituents from outer walls of Chlorella Fusca and Nanochlorum Eucaryotum. Phytochem., 31, 1923–1929.
Derenne S., Largeau C. and Hatcher P.G. (1992a). Structure of Chlorella fusca algaenans: relationships with ultralaminae in lacustrine kerogens; species-and environment-dependent variations in the composition of fossil ultralaminae. Org. Geochem., 18, 417–422.
Lallier-Vergès E., Sifeddine A., De Beaulieu, J.L., Reille M., Tribovillard N., Bertrand P., Mongenot T., Thouveny N., Disnar J.R. and Guillet B. (1993) Sensibilité de la sédimentation organique aux variations climatiques du Tardi-Würm et de l’Holocène —le lac du Bouchet (Haute Loire, France). Bull. de la Soc. Géol. de Fr., 164 (5), 661–673.
Meyers P.A. and Ishiwatari R (1993) Lacustrine organic geochemistry—an overview of indicators of organic matter sources and diagenesis in lake sediments. Org. Geochem., 20 (7), 867–900.
Patience A., Lallier-Vergès E., Albéric P., Tribovillard N.P. and Desprairies A. (1994) Relationships between organo-mineral supply and early diagenesis in the lacustrine Environment: a study of surficial sediments from the Lac du Bouchet (Haute Loire, France). Quat. Sci. Rev., in press.
Rein B. and Negendank J.F.W. (1993). Organic Carbon contents of sediments from Lake Schalkenmehrerer Maar: a paleoclimate indicator. In: Lecture Notes in Earth Sciences, J.F.W. Negendank and Zolitschka B. (eds.). pp. 163–170.
Sarazin, G., Michard, G., Gharib, I.Al. and Bernat, M. (1992) Sedimentation rate and early diagenesis of particulate organic nitrogen and carbon in Aydat Lake (Puy de Dôme, France), Chem. Geol., 98, 307–316.
Sifeddine A., Lallier-Vergès E., Bertrand P., de Beaulieu J.L and Reille M., (1992). Palynofaciès et flux de carbone organique au cours des 30 000 dernières années: le lac du Bouchet (Haute Loire, France). 8th International Palynological Congress, Aix en Provence, 6–12 sept. 1992.
Truze E. (1990). Etude sédimentologique et géochimique des dépôts du maar du Bouchet (Massif Central, France). Evolution d’un système lacustre au cours du dernier cycle climatique. Thèse de doctorat en Sciences. Université Aix-Marseille II, 242 p.
Author information
Authors and Affiliations
Rights and permissions
Copyright information
© 1995 Springer-Verlag Berlin Heidelberg
About this chapter
Cite this chapter
Patience, A.J., Lallier-Vergès, E., Sifeddine, A., Albéric, P., Guillet, B. (1995). Organic fluxes and early diagenesis in the lacustrine environment: the superficial sediments of the Lac du Bouchet (Haute Loire, France). In: Organic Matter Accumulation. Lecture Notes in Earth Sciences, vol 57. Springer, Berlin, Heidelberg. https://doi.org/10.1007/BFb0117671
Download citation
DOI: https://doi.org/10.1007/BFb0117671
Published:
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-59170-2
Online ISBN: 978-3-540-49216-0
eBook Packages: Springer Book Archive