varve clay

varve clay

[′värv ‚klā]
(geology)
References in periodicals archive ?
Prior investigations of changes in the direction of drainage and their chronology were based on ancient shorelines, varve clay counts and radiocarbon datings (Kilpi 1937; Hyvarinen 1966; Miettinen 1996; Saarelainen & Vanne 1997).
2006) if we assume a constant retreat rate from the Uimaharju marginal formation to Norrbotten, but is not constrained by reliable AMS radiocarbon or varve clay chronology, and represents thus only a rough estimate for the age of the formation of Lake Pielinen.