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T. Sime-Ngando et al. (eds.), Lake Pavin, DOI 10.1007/978-3-319-39961-4_23
Lake Pavin Paleolimnology and Event
StratigraphyLéo Chassiot , Emmanuel Chapron , Yannick Miras ,
Markus J. Schwab , Patrick Albéric , Aude Beauger ,
Anne- Lise Develle , Fabien Arnaud , Patrick Lajeunesse ,
Renata Zocatelli , Sylvain Bernard ,
Anne- Catherine Lehours , and Didier JézéquelAbstract
In this chapter we present an up-to-date database of sedimentary sequences retrieved from
Lake Pavin during the last 50 years in both oxic and anoxic waters. The detailed history of
this mid Holocene crater lake can be reconstructed from the correlation of radiocarbon
dated sedimentary sequences retrieved from the deep central basin, a subaquatic plateau and
littoral environments. High-resolution measurements of sediment composition (diffuse
spectral refl ectance, XRF core scanning) combined with the analysis of organic matter
composition and preliminary pollen and diatom assemblages investigations on selected
sediment cores are used to reconstruct (i) the evolution since ca. 7000 cal BP of Lake Pavin
limnology together with its radiocarbon reservoir effect and (ii) the impact of a wide range
of subaquatic slope failure events. Such a multidisciplinary approach of Lake Pavin basin
fi ll revealed contrasted sedimentation patterns just after the volcanic eruption and following
the development of a dense vegetation cover along the slopes of the crater. Pavin sedimenta-
tion is rapidly and largely dominated by organic rich and fi nely laminated diatomite forma-
tion, but several short periods of enhanced mineral inputs might refl ect the infl uence of
wetter periods, such as the Little Ice Age. Over the last millennium two large subaquatic
mass wasting events are also identifi ed and may have signifi cantly impacted its limnology.L. Chassiot • P. Albéric • R. Zocatelli
ISTO Institut des Sciences de la Terre d’Orléans, Observatoire des
Sciences de l’Univers en région Centre , UMR 7327 (CNRS-
Université d’Orléans-BRGM) , Campus Géosciences, 1A rue de la
Férolerie , 45071 Orléans Cedex 2 , France
E. Chapron (*)
Present Address: ISTO Institut des Sciences de la Terre d’Orléans,
Observatoire des Sciences de l’Univers en région Centre , UMR
7327 (CNRS- Université d’Orléans-BRGM) , Campus Géosciences,
1A rue de la Férolerie , 45071 Orléans Cedex 2 , France
Present Affi liation: GEODE UMR 5602 CNRS , Université de
Toulouse 2 Jean Jaurès , 5 Allée A. Machado , 31058 Toulouse
Cedex 9 , France
e-mail: [email protected]
Y. Miras • A. Beauger
GEOLAB UMR 6042 CNRS-Université Blaise Pascal-Maison des
Sciences de l’Homme , 4 rue Ledru , 63057 Clermont-Ferrand
Cedex 1 , France
M. J. Schwab
GFZ, Helmholtz Zentrum Potsdam ,
Telegrafenberg , 14473 Potsdam , Germany
23
A.-L. Develle • F. Arnaud
EDYTEM Environnement, Dynamiques et Territoire de la
Montagne , UMR 5204 CNRS Université de Savoie ,
Bâtiment Pôle Montagne , 73376 Le Bourget du Lac Cedex , France
P. Lajeunesse
CEN Centre d’études nordiques, Département de Géographie ,
Université Laval , Québec G1VOA6 , Canada
S. Bernard
LMCM Laboratoire de Minéralogie et Cosmochimie du Museum ,
UMR 7202 CNRS-Museum National d’Histoire Naturelle
(MNHN) USM 0205 , Case Postale 52, 61 Rue Buffon , 75005
Paris , France
A.-C. Lehours
LMGE Laboratoire Micro organismes: Génome et Environnement ,
UMR 6023 CNRS-Université Blaise Pascale ,
Bâtiment de Biologie A, Les Cézeaux, Avenue des Landais, BP
80026 , 63171 Aubière Cedex , France
D. Jézéquel
IPGP (Institut de Physique du Globe de Paris) , Sorbonne Paris
Cité, Univ. Paris Diderot, UMR 7154 CNRS ,
1 rue Jussieu , 75005 Paris , France