All analyses of the Borrobol Tephra

This search has found 85 analyses

The results of your search are shown on this page, which is divided into three sections. The first contains geochemical data in the form of electron probe microanalyses of the the tephra layer you have chosen, which can be downloaded. Most of these analyses will be of glass shards. The second section gives information about the instrument conditions and the third details about the sources of the data and the date and time of your search. You should always refer to the original sources to get the full context of the data presented here.

FeO: total iron is represented as FeO
*original totals for normalised data (where applicable)
Site	Phase	SiO₂	TiO₂	Al₂O₃	FeO	MnO	MgO	CaO	Na₂O	K₂O	Total	EP	Ref
Abernethy Forest (Scotland)	glass	74.57	0.15	12.63	1.41	0.03	0.07	0.72	3.65	3.76	96.99	33	2977
Abernethy Forest (Scotland)	glass	73.70	0.14	12.51	1.50	0.06	0.09	0.77	3.55	3.79	96.11	33	2977
Abernethy Forest (Scotland)	glass	73.70	0.13	12.41	1.39	0.05	0.07	0.75	3.65	3.83	95.98	33	2977
Abernethy Forest (Scotland)	glass	73.69	0.13	12.36	1.47	0.06	0.08	0.73	3.43	3.85	95.81	33	2977
Abernethy Forest (Scotland)	glass	73.61	0.15	12.56	1.54	0.04	0.11	0.77	3.60	3.77	96.15	33	2977
Abernethy Forest (Scotland)	glass	73.58	0.14	12.53	1.44	0.00	0.08	0.77	3.44	3.68	95.66	33	2977
Abernethy Forest (Scotland)	glass	72.78	0.14	12.39	1.49	0.03	0.09	0.73	3.40	3.83	94.88	33	2977
Abernethy Forest (Scotland)	glass	72.58	0.15	12.23	1.46	0.03	0.07	0.71	3.34	3.78	94.35	33	2977
Abernethy Forest (Scotland)	glass	72.53	0.12	12.24	1.46	0.06	0.06	0.74	3.44	3.73	94.39	33	2977
Borrobol (Scotland)	glass	74.42	0.13	12.62	1.51	0.03	0.11	0.72	3.87	3.74	97.15	2	1049
Borrobol (Scotland)	glass	73.85	0.13	11.78	1.18	0.04	0.11	0.76	3.58	3.78	95.22	2	1049
Borrobol (Scotland)	glass	73.56	0.09	12.52	1.55	0.08	0.11	0.75	3.53	3.80	95.97	2	1049
Borrobol (Scotland)	glass	73.51	0.10	12.25	1.51	0.03	0.13	0.71	3.35	3.82	95.39	2	1049
Borrobol (Scotland)	glass	73.51	0.10	12.25	1.42	0.07	0.14	0.74	3.74	3.81	95.76	2	1049
Borrobol (Scotland)	glass	73.41	0.10	12.34	1.53	0.04	0.09	0.71	3.52	3.74	95.45	2	1049
Borrobol (Scotland)	glass	73.39	0.15	12.29	1.49	0.02	0.12	0.77	3.58	3.68	95.50	2	1049
Borrobol (Scotland)	glass	73.35	0.13	12.36	1.47	0.05	0.10	0.77	3.57	3.89	95.69	2	1049
Borrobol (Scotland)	glass	73.33	0.14	12.27	1.55	0.07	0.14	0.71	3.46	3.69	95.35	2	1049
Borrobol (Scotland)	glass	73.27	0.13	12.41	1.34	0.07	0.13	0.76	3.41	3.71	95.22	2	1049
Borrobol (Scotland)	glass	73.22	0.10	12.13	1.55	0.04	0.10	0.80	3.61	3.58	95.12	2	1049
Borrobol (Scotland)	glass	73.20	0.11	12.22	1.49	0.05	0.14	0.77	3.35	3.83	95.16	2	1049
Borrobol (Scotland)	glass	73.13	0.15	12.20	1.44	0.07	0.12	0.77	3.62	3.86	95.35	2	1049
Borrobol (Scotland)	glass	73.12	0.09	12.29	1.46	0.05	0.11	0.76	3.58	3.71	95.16	2	1049
Borrobol (Scotland)	glass	73.10	0.12	12.35	1.48	0.09	0.11	0.80	3.58	3.60	95.23	2	1049
Borrobol (Scotland)	glass	73.10	0.11	12.14	1.56	0.08	0.11	0.79	3.61	3.66	95.16	2	1049
Borrobol (Scotland)	glass	73.00	0.10	12.39	1.47	0.10	0.09	0.84	3.66	3.86	95.51	2	1049
Borrobol (Scotland)	glass	72.96	0.17	12.73	1.45	0.01	0.08	0.71	3.86	3.79	95.77	32	2376
Borrobol (Scotland)	glass	72.92	0.06	12.35	1.53	0.09	0.13	0.75	3.77	3.86	95.46	2	1049
Borrobol (Scotland)	glass	72.72	0.12	12.51	1.30	0.03	0.06	0.67	3.78	3.84	95.03	32	2376
Borrobol (Scotland)	glass	72.70	0.15	12.63	1.43	0.02	0.08	0.75	3.78	3.86	95.41	32	2376
Borrobol (Scotland)	glass	72.67	0.09	12.50	1.33	0.00	0.08	0.69	3.79	3.88	95.04	32	2376
Borrobol (Scotland)	glass	72.63	0.13	12.53	1.32	0.03	0.06	0.72	3.76	3.86	95.04	32	2376
Borrobol (Scotland)	glass	72.53	0.10	12.64	1.38	0.07	0.06	0.79	3.83	3.79	95.19	32	2376
Borrobol (Scotland)	glass	72.51	0.14	12.58	1.45	0.02	0.08	0.72	3.78	3.85	95.13	32	2376
H�sseldala port (Sweden)	glass	73.57	0.14	12.39	1.47	0.04	0.04	0.72	3.39	3.99	95.75	31	1696
H�sseldala port (Sweden)	glass	73.18	0.07	12.27	1.50	0.03	0.09	0.77	3.26	3.76	94.93	31	1696
H�sseldala port (Sweden)	glass	73.12	0.10	12.19	1.40	0.07	0.06	0.68	3.31	3.83	94.75	31	1696
H�sseldala port (Sweden)	glass	73.12	0.10	12.23	1.57	0.03	0.09	0.72	3.25	3.72	94.83	31	1696
H�sseldala port (Sweden)	glass	73.11	0.13	12.30	1.52	0.00	0.07	0.77	3.62	3.68	95.20	31	1696
H�sseldala port (Sweden)	glass	73.08	0.11	12.25	1.09	0.02	0.03	0.70	3.31	3.78	94.37	31	1696
H�sseldala port (Sweden)	glass	73.03	0.11	12.24	1.48	0.05	0.06	0.76	3.30	3.57	94.58	31	1696
H�sseldala port (Sweden)	glass	73.02	0.14	12.38	1.59	0.05	0.07	0.66	3.47	3.80	95.18	31	1696
H�sseldala port (Sweden)	glass	72.99	0.14	12.36	1.51	0.02	0.09	0.79	3.38	3.63	94.91	31	1696
H�sseldala port (Sweden)	glass	72.98	0.16	12.39	1.18	0.04	0.08	0.62	3.40	3.67	94.52	31	1696
H�sseldala port (Sweden)	glass	72.93	0.13	12.22	1.53	0.06	0.08	0.74	3.37	3.68	94.74	31	1696
H�sseldala port (Sweden)	glass	72.91	0.12	12.09	1.35	0.05	0.05	0.83	3.38	3.92	94.70	31	1696
H�sseldala port (Sweden)	glass	72.90	0.14	12.30	1.50	0.04	0.09	0.72	3.37	3.90	94.96	31	1696
H�sseldala port (Sweden)	glass	72.87	0.11	12.47	1.51	0.05	0.08	0.74	3.29	3.69	94.81	31	1696
H�sseldala port (Sweden)	glass	72.86	0.13	12.29	1.49	0.05	0.05	0.77	3.36	3.69	94.69	31	1696
H�sseldala port (Sweden)	glass	72.77	0.11	12.29	1.51	0.07	0.12	0.74	3.41	3.66	94.68	31	1696
H�sseldala port (Sweden)	glass	72.76	0.18	12.18	1.50	0.03	0.10	0.77	3.36	3.86	94.74	31	1696
H�sseldala port (Sweden)	glass	72.72	0.11	11.98	1.50	0.06	0.10	0.74	3.66	3.87	94.74	31	1696
H�sseldala port (Sweden)	glass	72.69	0.17	12.12	1.50	0.00	0.11	0.90	3.38	3.67	94.54	31	1696
H�sseldala port (Sweden)	glass	72.64	0.13	12.28	1.61	0.00	0.11	0.83	3.53	3.68	94.81	31	1696
H�sseldala port (Sweden)	glass	72.61	0.13	12.27	1.48	0.05	0.08	0.76	3.24	3.74	94.34	31	1696
H�sseldala port (Sweden)	glass	72.60	0.13	12.34	1.47	0.06	0.07	0.84	3.46	3.68	94.63	31	1696
H�sseldala port (Sweden)	glass	72.34	0.13	12.32	1.49	0.02	0.09	0.70	3.23	3.82	94.14	31	1696
Loch an t'Suidhe (Scotland)	glass	74.31	0.20	13.76	0.90		0.24	1.11	3.79	3.10	97.40	4	2376
Loch an t'Suidhe (Scotland)	glass	73.08	0.17	12.56	1.57	0.06	0.11	0.81	3.51	3.83	95.70	32	2376
Loch an t'Suidhe (Scotland)	glass	73.04	0.13	12.87	1.54	0.20	0.10	0.80	3.77	3.72	96.16	32	2376
Loch an t'Suidhe (Scotland)	glass	72.74	0.14	12.55	1.42	0.09	0.10	0.86	3.34	3.87	95.11	32	2376
Loch an t'Suidhe (Scotland)	glass	72.57	0.13	12.70	1.48	0.03	0.09	0.80	3.50	3.87	95.17	32	2376
Loch an t'Suidhe (Scotland)	glass	72.56	0.20	12.58	1.63	0.08	0.12	0.83	3.38	3.89	95.26	32	2376
Loch an t'Suidhe (Scotland)	glass	72.10	0.15	12.97	1.25		0.07	0.69	4.06	3.64	94.92	4	2376
Skallajult (Sweden)	glass	73.14	0.18	12.42	1.54	0.00	0.09	0.74	3.17	3.76	95.04	31	1696
Skallajult (Sweden)	glass	72.69	0.14	12.35	1.48	0.04	0.11	0.74	3.12	3.78	94.45	31	1696
Skallajult (Sweden)	glass	72.61	0.13	12.45	1.61	0.04	0.11	0.79	3.34	3.64	94.70	31	1696
Skallajult (Sweden)	glass	72.47	0.13	12.18	1.42	0.04	0.10	0.71	3.19	3.79	94.03	31	1696
Skallajult (Sweden)	glass	72.43	0.15	12.27	1.40	0.03	0.11	0.66	3.23	3.81	94.09	31	1696
Skallajult (Sweden)	glass	72.33	0.16	12.31	1.51	0.00	0.12	0.69	3.35	3.67	94.14	31	1696
Skallajult (Sweden)	glass	72.30	0.13	12.34	1.43	0.03	0.12	0.76	3.37	3.76	94.23	31	1696
Skallajult (Sweden)	glass	72.19	0.13	12.24	1.49	0.04	0.10	0.70	3.52	3.63	94.04	31	1696
Tynaspirit West (Scotland)	glass	73.27	0.13	12.43	1.54	0.02	0.11	0.86	3.61	3.45	95.52	2	1049
Tynaspirit West (Scotland)	glass	72.67	0.14	12.34	1.51	0.06	0.09	0.81	3.60	3.66	94.89	2	1049
Tynaspirit West (Scotland)	glass	72.50	0.12	12.22	1.47	0.05	0.10	0.80	3.34	3.71	94.31	2	1049
Tynaspirit West (Scotland)	glass	72.37	0.14	12.16	1.54	0.09	0.09	0.76	3.45	3.52	94.11	2	1049
Tynaspirit West (Scotland)	glass	72.10	0.13	12.05	1.44	0.05	0.10	0.76	2.94	3.63	93.19	2	1049
Tynaspirit West (Scotland)	glass	71.59	0.17	12.30	1.42	0.03	0.11	0.69	3.49	3.56	93.35	2	1049
Whitrig Bog (Scotland)	glass	73.55	0.19	12.21	1.50	0.03	0.10	0.77	3.46	3.83	95.63	2	1049
Whitrig Bog (Scotland)	glass	73.28	0.14	12.53	1.51	0.01	0.08	0.74	3.69	3.81	95.79	2	1049
Whitrig Bog (Scotland)	glass	73.22	0.10	12.31	1.57	0.07	0.07	0.67	3.55	3.69	95.24	2	1049
Whitrig Bog (Scotland)	glass	73.13	0.13	12.27	1.49	0.00	0.14	0.74	3.39	3.94	95.24	2	1049
Whitrig Bog (Scotland)	glass	72.99	0.16	12.35	1.54	0.04	0.09	0.77	3.60	3.73	95.27	2	1049
Whitrig Bog (Scotland)	glass	72.93	0.17	12.33	1.46	0.03	0.08	0.81	3.64	3.74	95.21	2	1049
Whitrig Bog (Scotland)	glass	72.87	0.12	12.49	1.46	0.04	0.09	0.74	3.43	3.81	95.05	2	1049

Instrument Conditions

These analyses were carried out under the following electron microprobe conditions.

Please refer to papers for full details of the instrument conditions, standards etc used to create these analyses
EP	Instrument	Beam current (nA)	Beam voltage (kV)	Correction	Sample
2	Cambridge Instruments Microscan V (University of Edinburgh)	15	20	ZAF	Thin section mounted in araldite then ground and polished
4	Jeol 733 Superprobe (Queens University, Belfast)	10	15	ZAF	Thin section mounted in araldite then ground and polished
31	Cambridge Instruments Microscan V (University of Edinburgh)	15	20	ZAF	Thin section mounted in araldite then ground and polished
32	Cameca SX50 (Oxford University)	10	15	ZAF
33	JEOL JXA8800R	10	20	ZAF	Mounted in epoxy resin and ground and polished

References

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

1696 - Davies, S.M., Wastegard, S. and Wohlfarth, B. (2003) Extending the limits of the Borrobol Tephra to Scandinavia and detection of new early Holocene tephras. Quaternary Research 59, 345-352..

2977 - Matthews, IP, Birks, HH, Bourne, AJ, Brooks, SJ, Lowe, JJ, Macleod, A and Pyne-O'Donnell, SDF (2011) New age estimates and climatostratigraphic correlations for the Borrobol and Penifiler Tephras: evidence from Abernethy Forest, Scotland. Journal of Quaternary Science 26, ,247-252.

2376 - Pyne-O'Donnell, S.D.F. (2007) Three new distal tephras in sediments spanning the Last Glacial-Interglacial Transition in Scotland. Journal of Quaternary Science 22, 559-570.

1049 - Turney, C.S.M., Harkness, D.D. and Lowe, J.J. (1997) The use of microtephra horizons to correlate Late-glacial lake sediment successions in Scotland. Journal of Quaternary Science 12 (6), 525-531..

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 5/7/2025 at 07:30:24 local time, Edinburgh, Scotland, UK.