Correlation of Alaskan varve thickness with climatic parameters and use in paleoclimatic reconstruction
; Varve ; Zone froide
The thickness of varves in the sediments of Skilak Lake, Alaska, are correlated with the mean annual temperature (r = 0.574), inversly correlated with the mean annual cumulative snowfall (r = 0.794), and not correlated with the mean annual
, palynology, palaeomagnetism, varves, radiocarbon, uranium series, amino acids, and some other relative dating methods. Field relationships are however paramount and all samples must be placed in a rigorous stratigraphical and geomorphological context before
Distingue les lacs ouverts et les lacs fermés. Les dépôts calcaires sont communs à des climats très variés, depuis les varves bien connues du lac de Zurich, jusqu'aux deltas de précipitation chimique où les calcaires se déposent au contact d'une eau