varve+clay

См. также в других словарях:

• Varve — [ thumb|right|300px|Pleistocene age varves at Scarboro Bluffs, Toronto, Ontario, Canada. The thickest varves are more than half an inch thick. ] A varve is an annual layer of sediment or sedimentary rock. The word varve is derived from the… …   Wikipedia

• Clay — For other uses, see Clay (disambiguation). The Gay Head cliffs in Martha s Vineyard consist almost entirely of clay. Clay is a general term including many combinations of one or more clay minerals with traces of metal oxides and organic… …   Wikipedia

• varve — noun Etymology: Swedish varv turn, layer; akin to Old Norse hvarf ring, Old English hweorfan to turn more at wharf Date: 1912 a pair of layers of alternately finer and coarser silt or clay believed to comprise an annual cycle of deposition in a… …   New Collegiate Dictionary

• varve — [vα:v] noun Geology a pair of thin layers of clay and silt of contrasting colour and texture which represent the deposit of a single year (summer and winter) in a lake. Derivatives varved adjective Origin early 20th cent.; from Swed. varv layer …   English new terms dictionary

• varve — n. annually deposited layers of clay and silt in a lake used to determine the chronology of glacial sediments. Derivatives: varved adj. Etymology: Sw. varv layer …   Useful english dictionary

• Fremington, Devon — Fremington is a village and civil parish in North Devon three miles (5 km) west of Barnstaple. It was formerly a borough that sent members to Parliament in the reign of Edward III. The parish itself includes the neighbouring villages of… …   Wikipedia

• Axarus — Taxobox | name = Axarus image width = 240px regnum = Animalia phylum = Arthropoda classis = Insecta subclassis = Pterygota infraclassis = Neoptera superordo = Endopterygota ordo = Diptera subordo = Nematocera infraordo = Culicomorpha superfamilia …   Wikipedia

• Glacial geology of the Genesee River — The Genesee River flows northward from its source in northern Pennsylvania to enter Lake Ontario at Rochester, New York. Genesee River Middle Section Near Mount Morris Showing Glacial Changes in Valleys The present river valley has been modified… …   Wikipedia

• Gerard De Geer — Baron Gerard Jacob De Geer (1858 1943) was a Swedish geologist who made significant contributions to Quaternary geology, particularly geomorphology and geochronology. De Geer is best known for his discovery of varves. Early life and family De… …   Wikipedia

• Glaciolacustrine deposits — Sediments deposited into lakes that have come from glaciers are called glaciolacustrine deposits. These lakes include ice margin lakes or other types formed from glacial erosion or deposition. Sediments in the bedload and suspended load are… …   Wikipedia

• Holocene Epoch — formerly Recent Epoch Latest interval of the Earth s geologic history, dating from 10,000 years ago to the present. The younger of the two epochs that constitute the Quaternary Period, the Holocene follows the last glacial stage of the… …   Universalium