Cors Fochno (Borth Bog), Ceredigion, Wales

Your search has found 6 tephra layers at Cors Fochno (Borth Bog)

Site Type Area Latitude Longitude Altitude (m)
Terrestrial Wales, Ceredigion 52.5000°N 4.0100°W 6

 

*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
1153 CF 7.20 50-cm-long Russian-type corer (5cm diameter)
Hekla 1947 Tephra CF-1 0.130 - 0.150 Vesicular shards with a brown tinge, maximum diatmeter of largest shard 75 microns (*Cryptotephra) View Data 4809
Hekla 1845 Tephra CF-2 0.230 - 0.240 Fluted shards with a brown tinge, maximum diatmeter of largest shard 100 microns (*Cryptotephra) View Data 4809
CF-3-G1 0.310 - 0.340 Platy shards with a pink tinge, maximum diameter of largest shard 80 microns (*Cryptotephra) View Data 4809
CF-3-G2 0.310 - 0.340 Platy shards with a pink tinge, maximum diameter of largest shard 80 microns (*Cryptotephra) View Data 4809
CF-4 0.950 - 0.970 Blocky and platy shards with a brown tinge, maximum diatmeter of largest shard 105 microns (*Cryptotephra) View Data 4809
MOR-T4 CF-5 1.150 - 1.180 Clear vesicular shards, maximum diameter of largest shard 80 microns (*Cryptotephra) View Data 4809

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.

4809: Watson, E.J., Swindles, G.T., Lawson, I.T., Savov, I.P. and Wastegard, S.  2017  The presence of Holocene cryptotephra in Wales and southern England. Journal of Quaternary Science  32, 493-500. https://doi.org/10.1002/jqs.2942

Data Sources

All of the data contained in this database is either published or donated. When using the data, acknowledgement must be made of the original source of the data and that the data was obtained from Tephrabase. See Copyright information.

This Tephrabase search was made on 4/7/2025 at 18:02:05 local time, Edinburgh, Scotland, UK.