varve

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varve,

in geology, pair of thin sedimentary layers formed annually by seasonal climatic changes. Usually found in glacial lake deposits, varves consist of a coarse-grained, light-colored summer deposit and a finer-grained, dark-colored winter deposit formed when fine sediment settles out from the water under the ice cover. Varves, and the pollen they contain, are useful for interpreting recent climatic history.

varve

[′värv]
(geology)
A sedimentary bed, layer, or sequence of layers deposited in a body of still water within a year's time, and usually during a season. Also known as glacial varve.
References in periodicals archive ?
Comparison between chironomid-inferred July temperatures and meteorological data AD 1850-2001 from varved lake Silvaplana, Switzerland.
Parallel high-frequency reflectors typical of varved glacial Lake Barlow silty clays characterize the older succession (Shilts 1984), which is overlain by a largely transparent, reflector-free Holocene succession.
1995): Filling the Delaware Basin: Hydrologic and climatic controls on the Upper Permian Castile Formation varved evaporite.
The role of biogeochemical cycling for the formation and preservation of varved sediments in Soppensee (Switzerland).
The till is overlain by glaciolacustrine sands, silts or varved clays, up to 25 m in thickness.
Both these sites are located on the riverbank where varved clays underlie the studied deposits and landslides are quite common, thus one can suspect that these deposits are not in situ position.
Water movement has been exclusively through fractures and along varved bedding planes for approximately 700,000 years, indicating that in these settings, matrix flow is not occurring.
TV tarted / varved TY patent / payeny TW tillot / willow TZ Tantalian / Zanzalian UV euouae / evovae UY tutu / Ty Ty (GA)
The shallow soils are generally developed in varved sediments and show limited soil profile development.
1988) based much of their paleoenvironmental reconstruction on a sea-surface paleotemperature curve derived from shifts in fossil radiolaria species preserved in varved sediments at the bottom of the Santa Barbara Channel, and subsequently other archaeologists also have used this curve.
Vegetation and fire history from three lakes with varved sediments in northwestern Wisconsin (U.
Environmental changes during the past 2000 years in north central Wisconsin: analysis of pollen, charcoal, and seeds from varved lake sediments.