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TitleL'analyse des sédiments lacustres
DownloadDownload (whole publication)
LicencePlease note the adoption of the Open Government Licence - Canada supersedes any previous licences.
AuthorFrancus, P; Fortin, D
SourceUtilisation des archives naturelles pour la reconstitution du passé hydro-climatique; by Bégin, C (ed.); Nicault, A (ed.); Bégin, Y (ed.); Geological Survey of Canada, Open File 8768, 2021 p. 53-59, Open Access logo Open Access
PublisherNatural Resources Canada
Documentopen file
Mediaon-line; digital
RelatedThis publication is contained in Utilisation des archives naturelles pour la reconstitution du passé hydro-climatique
File formatpdf
NTS23E; 23L; 33E; 33F; 33G; 33H; 33I; 33J; 33K; 33L
AreaComplexe La Grande
Lat/Long WENS -78.0000 -70.0000 55.0000 53.0000
Subjectsenvironmental geology; hydrogeology; surficial geology/geomorphology; stratigraphy; Nature and Environment; Science and Technology; surface waters; lakes; lake sediment cores; lake sediment thickness; varves; laminations; climatology; paleoclimatology; hydrologic environment; runoff; paleoenvironment; Le projet ARCHIVES; lacustrine sediments; Climate change; Hydrology; Boreal ecosystems; Forests; Phanerozoic; Cenozoic; Quaternary
Illustrationslocation maps; core logs; photographs
ProgramClimate Change Geoscience Extreme Events
Released2021 06 28
AbstractLacustrine sedimentary sequences represent, in addition to tree rings, another indirect source of information on past hydro-climatic conditions. The laminated sequences of sediments stands as 'varves' when being established to be annual. They are lithogenic or clastic when they originate from the accumulation of terrigenous sediments related to seasonal variations of hydrologic run-off. The ARCHIVES experts has adopted a procedure for prospecting lakes likely to have varved sediment sequences, for sampling, collecting, conserving and processing sediments samples, and for the construction of 'composite' sedimentological series. The measured characteristics of the latter (thickness of the varves) are compared with the hydroclimatic data registers and also with the other reconstructions established by dendrochronology.

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