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- Varve abstract "A varve is an annual layer of sediment or sedimentary rock.The word 'varve' is derived from the Swedish word varv whose meanings and connotations include 'revolution', 'in layers', and 'circle'. The term first appeared as Hvarfig lera (varved clay) on the first map produced by the Geological Survey of Sweden in 1862. Initially, varve was used to describe the separate components of annual layers in glacial lake sediments, but at the 1910 Geological Congress, the Swedish geologist Gerard De Geer (1858-1943) proposed a new formal definition where varve described the whole of any annual sedimentary layer. More recently introduced terms such as 'annually laminated' are synonymous with varve.Of the many rhythmites found in the geological record, varves are one of the most important and illuminating to studies of past climate change. Varves are amongst the smallest-scale events recognised in stratigraphy.An annual layer can be highly visible because the particles washed into the layer in the spring when there is greater flow strength are much coarser than those deposited later in the year. This forms a pair of layers—one coarse and one fine—for each annual cycle. Varves form only in fresh or brackish water, because the high levels of salt in normal sea water coagulates the clay into coarse grains. Since the saline waters will leave coarse particles all year, it is nearly impossible to distinguish the individual layers in salt waters. Indeed, clay flocculation occurs at high ionic strength due to the collapse of the clay electrical double layer (EDL) which decreases the electrostatic repulsion between negatively charged clay particles.".
- Varve thumbnail Varve1.gif?width=300.
- Varve wikiPageID "947217".
- Varve wikiPageRevisionID "600359344".
- Varve hasPhotoCollection Varve.
- Varve subject Category:Climatology.
- Varve subject Category:Incremental_dating.
- Varve subject Category:Sedimentary_rocks.
- Varve subject Category:Sedimentology.
- Varve type Abstraction100002137.
- Varve type Material114580897.
- Varve type Matter100020827.
- Varve type Part113809207.
- Varve type PhysicalEntity100001930.
- Varve type Relation100031921.
- Varve type Rock114696793.
- Varve type SedimentaryRock114698000.
- Varve type SedimentaryRocks.
- Varve type Substance100019613.
- Varve comment "A varve is an annual layer of sediment or sedimentary rock.The word 'varve' is derived from the Swedish word varv whose meanings and connotations include 'revolution', 'in layers', and 'circle'. The term first appeared as Hvarfig lera (varved clay) on the first map produced by the Geological Survey of Sweden in 1862.".
- Varve label "Varva".
- Varve label "Varva".
- Varve label "Varve".
- Varve label "Varve".
- Varve label "Warve".
- Varve label "Warve".
- Varve label "Warwa".
- Varve label "年縞".
- Varve sameAs Varva.
- Varve sameAs Warve.
- Varve sameAs Varva.
- Varve sameAs Varve.
- Varve sameAs Varva.
- Varve sameAs 年縞.
- Varve sameAs Warve.
- Varve sameAs Warwa.
- Varve sameAs m.03sdc7.
- Varve sameAs Q835591.
- Varve sameAs Q835591.
- Varve sameAs Varve.
- Varve wasDerivedFrom Varve?oldid=600359344.
- Varve depiction Varve1.gif.
- Varve isPrimaryTopicOf Varve.
