“varve”的概念、定义、翻译、参考文献-科学参考

varve

Geology and Earth Sciences

A banded layer of silt and sand deposited annually in lakes, especially near to ice sheets. The coarse, paler material is deposited in summer; the finer, darker material in winter. One varve consists of one light band and one dark band. Varves can be counted to calculate the age of glacial deposits (varve analysis, also called varve chronology or varve count). Since the pattern of thicknesses of successive varves is often distinctive, correlations can be made between widely separated deposits, using the same principle as that of dendrochronology.

Geography

A pair of coarse and fine deposits that reflect seasonal deposition in proglacial lakes. In summer, meltwater streams deposit silt- to sand-sized coarse sediments; in winter the lake surface is frozen, the water is calm, and the fine deposits settle out in a thinner layer than the summer sediments. A varve couplet represents the total fluvio-glacial deposition on a lake floor for one year. Chu et al. (2012) Holocene 22, 785 reconstruct the growing season over the past 1600 years in northeastern China from varved sediments. At Lake Sihailongwan, Snowball et al. (2002) Holocene 12, 1, analyse a series of varves to reconstruct climatic changes during glaciations.

单词	varve
释义	varve Geology and Earth Sciences A banded layer of silt and sand deposited annually in lakes, especially near to ice sheets. The coarse, paler material is deposited in summer; the finer, darker material in winter. One varve consists of one light band and one dark band. Varves can be counted to calculate the age of glacial deposits (varve analysis, also called varve chronology or varve count). Since the pattern of thicknesses of successive varves is often distinctive, correlations can be made between widely separated deposits, using the same principle as that of dendrochronology. Geography A pair of coarse and fine deposits that reflect seasonal deposition in proglacial lakes. In summer, meltwater streams deposit silt- to sand-sized coarse sediments; in winter the lake surface is frozen, the water is calm, and the fine deposits settle out in a thinner layer than the summer sediments. A varve couplet represents the total fluvio-glacial deposition on a lake floor for one year. Chu et al. (2012) Holocene 22, 785 reconstruct the growing season over the past 1600 years in northeastern China from varved sediments. At Lake Sihailongwan, Snowball et al. (2002) Holocene 12, 1, analyse a series of varves to reconstruct climatic changes during glaciations.
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