Fallahogy Bog, County Londonderry, Northern Ireland

Your search has found 8 tephra layers at Fallahogy Bog

Site Type	Area	Latitude	Longitude	Grid reference	Altitude (m)
Terrestrial	Northern Ireland, County Londonderry	54.9120°N	6.5620°W	C922081	46

*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
65	Fallahogy April 91	6.50	Russian Core
				Lairg Tephra B		4.400 - 4.450	*Cryptotephra	View Data	968
				Lairg Tephra A		4.500 - 4.550	*Cryptotephra	View Data	968
66	Fallahogy Nov 93 1B	5.50	Russian Core
				Lairg Tephra B		5.150 - 5.200	*Cryptotephra	View Data	968
				Lairg Tephra A		5.350 - 5.400	*Cryptotephra	View Data	968
1165	Core A	0.50	50 cm Russian corer
				Hekla 1947 Tephra	A FAL_1	0.080 - 0.090	Light brown vesicular glass shards, ranging from 15-155 um in lenght (*Cryptotephra)	View Data	4255
				Hekla 1845 Tephra	A FAL_2	0.140 - 0.150	Light brown vesicular glass shards, ranging from 15-155 um in lenght (*Cryptotephra)	View Data	4255
				Hekla 1510 Tephra	A FAL_3	0.240 - 0.250	Light brown vesicular glass shards, ranging from 15-155 um in lenght (*Cryptotephra)	View Data	4255
1166	Core K	0.50	50 cm Russian corer
				Hekla 1510 Tephra	K FAL_3	0.430 - 0.450	Light brown vesicular glass shards, ranging from 15-155 um in lenght (*Cryptotephra)	View Data	4255

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.

968: Pilcher, J.R., Hall, V.A. and McCormac, F.G. 1996 An outline tephrochronology for the Holocene of the north of Ireland. Journal of Quaternary Science 11 (6), 485-494.. https://doi.org/10.1002/(SICI)1099-1417(199611/12)11:6<485::AID-JQS266>3.0.CO;2-T

4255: Watson, E.J., Swindles, G.T., Lawson, I.T. and Savov, I.P. 2015 Spatial variability of tephra and carbon accumulation in a Holocene peatland. Quaternary Science Reviews 124, 248-264. https://doi.org/10.1016/j.quascirev.2015.07.025

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 21:03:45 local time, Edinburgh, Scotland, UK.