Dimnamyra, Dimnøya, Norway

Your search has found 2 tephra layers at Dimnamyra

Site Type	Area	Latitude	Longitude	Altitude (m)
Terrestrial	Norway, Dimnøya	62.3203°N	5.8014°E	32

*Note that the Tephra layer depth of a cryptotephra does not indicate the thickness of the layer, as in a visible tephra tephra layer. The thickness indicates the spread of the tephra shards in the sediment or sometimes the top and bottom depths are the same (i.e. no apparent thickness).
¹Correlated tephra name means that the tephra deposit has been correlated with a tephra horizon found at multiple sites (e.g. Hekla 4). Of course, these correlations could be reinterpreted and care needs to be taken.
²Local tephra name is the name given by the researchers for the tephra found at the site, this is often a mixture of a site code/name and the depth of the tephra. Not all tephra layers in Tephrabase have a local name, but more or being added. This is independent of any correlations to other tephra deposits.
Profile				Tephra Layer
No	Name	Profile Depth (m)	Type	Correlated name¹	Local name²	Tephra Depth (m)	Comments	Geochemical data	Ref
1112	Dimnamyra 13	n/a	11 cm diameter 2 m long PVC tube piston corer
				Vedde Tephra		4.120 - 4.450	The Vedde Ash Bed is up to 48 cm thick and consists of pure ash.	View Data	2234
				Dimna Ash		5.600 - 5.900	The Dimna Ash has two ash peaks 20 cm apart, below 5.6 metres. The highest concentration was found at 567-568 cm with almost 13,000 rhyolitic ash shards (in the size range 25-80 mm) per cm3 primary sediment. Samples for geochemical analyses were taken from 5.86-5.87 m, 5.79-5.8 m, 5.75-5.76 m and 5.67-5.68 m.	View Data	2234

References

The data on this page is from the following source(s). If you use this data please acknowledge the source of the data. The number preceding each reference matches the Ref number on the data table above.

2234: Koren, J.H., Svendsen, J.I., Mangerud, J. and Furnes, H. 2008 The Dimna Ash - A 12.8 C-14 ka-old volcanic ash in Western Norway. Quaternary Science Reviews 27, 85-94.

Data Sources

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This Tephrabase search was made on 4/7/2025 at 21:16:23 local time, Edinburgh, Scotland, UK.