Post-eruption evolution of maar lakes and potential instability: The Lake Pavin case study, French Massif Central

Geomorphology ◽  
2021 ◽  
Vol 382 ◽  
pp. 107663
Author(s):  
J.-C. Thouret ◽  
P. Boivin ◽  
D. Miallier ◽  
F. Donnadieu ◽  
J.-P. Dumoulin ◽  
...  
Keyword(s):  
French Massif Central ◽  
Massif Central ◽  
Lake Pavin

scholarly journals Multidisciplinary characterisation of sedimentary processes in a recent maar lake (Lake Pavin, French Massif Central) and implication for natural hazards

2010 ◽  
Vol 10 (9) ◽  
pp. 1815-1827 ◽  
Author(s):  
E. Chapron ◽  
P. Albéric ◽  
D. Jézéquel ◽  
W. Versteeg ◽  
J.-L. Bourdier ◽  
...  
Keyword(s):  
Lacustrine Sediments ◽  
French Massif Central ◽  
Mass Wasting ◽  
Data Set ◽  
Massif Central ◽  
Volcanic Material ◽  
Deep Waters ◽  
Wide Range ◽  
Maar Lake ◽  
Lake Pavin

Abstract. Sedimentation processes occurring in the most recent maar lake of the French Massif Central (Lake Pavin) are documented for the first time based on high resolution seismic reflection and multibeam bathymetric surveys and by piston coring and radiocarbon dating on a sediment depocentre developed on a narrow sub aquatic plateau. This new data set confirms the mid Holocene age of maar lake Pavin formation at 6970±60 yrs cal BP and highlights a wide range of gravity reworking phenomena affecting the basin. In particular, a slump deposit dated between AD 580–640 remoulded both mid-Holocene lacustrine sediments, terrestrial plant debris and some volcanic material from the northern crater inner walls. Between AD 1200 and AD 1300, a large slide scar mapped at 50 m depth also affected the southern edge of the sub aquatic plateau, suggesting that these gas-rich biogenic sediments (laminated diatomite) are poorly stable. Although several triggering mechanisms can be proposed for these prehistoric sub-aquatic mass wasting deposits in Lake Pavin, we argue that such large remobilisation of gas-rich sediments may affect the gas stability in deep waters of meromictic maar lakes. This study highlights the need to further document mass wasting processes in maar lakes and their impacts on the generation of waves, favouring the development of dangerous (and potentially deadly) limnic eruptions.

scholarly journals Extreme events in the sedimentary record of maar Lake Pavin: Implications for natural hazards assessment in the French Massif Central

2016 ◽  
Vol 141 ◽  
pp. 9-25 ◽  
Author(s):  
Léo Chassiot ◽  
Emmanuel Chapron ◽  
Christian Di Giovanni ◽  
Patrick Albéric ◽  
Patrick Lajeunesse ◽  
...  
Keyword(s):  
Natural Hazards ◽  
Extreme Events ◽  
French Massif Central ◽  
Sedimentary Record ◽  
Massif Central ◽  
Hazards Assessment ◽  
Maar Lake ◽  
Lake Pavin

Geology, Geomorphology and Slope Instability of the Maar Lake Pavin (Auvergne, French Massif Central)

Lake Pavin ◽  
2016 ◽  
pp. 155-174 ◽  
Author(s):  
Jean-Claude Thouret ◽  
Pierre Boivin ◽  
Philippe Labazuy ◽  
Alberic Leclerc
Keyword(s):  
Slope Instability ◽  
French Massif Central ◽  
Massif Central ◽  
Maar Lake ◽  
Lake Pavin
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