All analyses of the Hekla 1158 Tephra

This search has found 52 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	P₂O₅	Total	EP	Ref
Afangagil (Iceland)	glass	68.22	0.52	14.71	5.56	0.23	0.45	3.02	4.89	2.31		99.91	2	1301
Afangagil (Iceland)	glass	67.75	0.50	14.47	5.77	0.20	0.50	3.22	4.69	2.18		99.28	2	1301
Afangagil (Iceland)	glass	67.70	0.55	14.51	5.72	0.17	0.50	3.19	4.53	2.28		99.15	2	1301
Afangagil (Iceland)	glass	67.62	0.40	13.99	6.13	0.14	0.49	3.04	4.06	2.15		98.02	2	1301
Afangagil (Iceland)	glass	67.52	0.38	14.42	5.63	0.20	0.46	3.02	4.18	2.12		97.93	2	1301
Afangagil (Iceland)	glass	67.49	0.52	14.20	5.43	0.21	0.41	3.03	4.48	2.45		98.22	2	1301
Afangagil (Iceland)	glass	67.48	0.47	14.32	5.72	0.18	0.39	3.00	4.78	2.18		98.52	2	1301
Afangagil (Iceland)	glass	67.48	0.44	14.88	5.58	0.14	0.44	3.15	4.16	2.20		98.47	2	1301
Afangagil (Iceland)	glass	67.32	0.50	14.29	5.75	0.20	0.45	3.27	4.87	2.31		98.96	2	1301
Afangagil (Iceland)	glass	67.07	0.51	14.40	5.96	0.28	0.41	3.25	4.83	2.19		98.90	2	1301
Afangagil (Iceland)	glass	66.98	0.55	14.41	5.57	0.18	0.52	3.19	4.89	2.28		98.57	2	1301
Afangagil (Iceland)	glass	66.36	0.46	14.02	5.68	0.22	0.43	2.89	4.40	2.26		96.72	2	1301
Borge (Norway)	glass	68.84	0.56	14.72	5.65		0.50	3.02	4.63	2.26		100.16	17	1958
Borge (Norway)	glass	68.73	0.67	14.35	5.65		0.47	2.73	4.31	2.76		99.66	17	1958
Borge (Norway)	glass	68.64	0.59	14.62	5.40		0.45	3.00	3.12	2.19		98.01	17	1958
Borge (Norway)	glass	68.52	0.52	15.10	5.61		0.46	3.25	4.25	2.27		99.98	17	1958
Borge (Norway)	glass	68.46	0.55	15.06	5.65		0.49	3.12	4.28	2.31		99.91	17	1958
Borge (Norway)	glass	68.35	0.50	15.09	5.60		0.49	3.15	4.63	2.26		100.06	17	1958
Borge (Norway)	glass	68.30	0.52	15.03	5.61		0.48	3.16	4.57	2.17		99.84	17	1958
Borge (Norway)	glass	68.26	0.42	14.88	5.63		0.47	3.06	4.24	2.19		99.15	17	1958
Borge (Norway)	glass	68.21	0.50	15.11	5.61		0.46	3.17	4.34	2.29		99.68	17	1958
Borge (Norway)	glass	68.19	0.68	14.13	5.79		0.47	2.88	4.33	2.43		98.88	17	1958
Borge (Norway)	glass	68.17	0.48	14.91	5.47		0.47	3.03	4.75	2.29		99.57	17	1958
Borge (Norway)	glass	68.06	0.45	14.31	5.15		0.47	3.04	3.45	2.32		98.13	17	1958
Borge (Norway)	glass	68.04	0.48	14.74	5.52		0.45	3.14	4.55	2.22		99.13	17	1958
Borge (Norway)	glass	68.03	0.49	14.71	5.62		0.46	3.03	4.39	2.59		99.31	17	1958
Borge (Norway)	glass	68.01	0.49	14.79	5.49		0.43	3.00	4.45	2.35		98.99	17	1958
Borge (Norway)	glass	67.77	0.52	15.02	5.69		0.47	3.12	4.50	2.27		99.35	17	1958
Borge (Norway)	glass	67.62	0.57	15.03	5.68		0.48	3.25	4.41	2.31		99.33	17	1958
Borge (Norway)	glass	67.43	0.50	14.83	5.57		0.49	3.12	4.51	2.17		98.62	17	1958
Borge (Norway)	glass	67.15	0.49	14.14	5.68		0.51	2.88	4.67	2.28		97.78	17	1958
Borge (Norway)	glass	67.09	0.47	14.92	5.73		0.46	3.25	4.40	2.24		98.55	17	1958
Borge (Norway)	glass	66.31	0.51	14.43	5.50		0.44	2.96	4.35	2.42		96.92	17	1958
Borge (Norway)	glass	66.25	0.50	14.62	5.52		0.46	3.12	4.50	2.21		97.18	17	1958
Borge (Norway)	glass	65.60	0.51	14.15	5.55		0.50	2.92	4.53	2.26		96.00	17	1958
Borge (Norway)	glass	65.58	0.48	14.48	5.46		0.46	3.04	4.15	2.00		95.65	17	1958
Borge (Norway)	glass	64.79	0.39	14.40	5.16		0.47	2.99	4.47	2.00		94.66	17	1958
Deger� Stormyr (Sweden)	glass	71.11	0.20	13.75	3.35	0.10	0.11	1.93	4.62	2.74	0.03	97.94	16	4505
Garry Bog (Northern Ireland)	glass	68.32	0.49	15.33	5.69		0.44	3.06	4.24	2.40		99.98	4	1561
Garry Bog (Northern Ireland)	glass	68.03	0.55	15.30	5.71		0.43	3.07	4.41	2.39		99.89	4	1561
Garry Bog (Northern Ireland)	glass	67.33	0.51	15.51	5.73		0.45	3.05	4.17	2.51		99.27	4	1561
Garry Bog (Northern Ireland)	glass	65.02	0.55	15.11	5.62		0.45	3.12	4.15	2.42		96.43	4	1561
Lake Svartk�lsj�rn (Sweden)	glass	70.07	0.56	12.74	6.24	0.22	0.42	2.34	4.97	2.90	0.11	100.58	16	4505
Lake Svartk�lsj�rn (Sweden)	glass	68.91	0.47	14.51	5.83	0.15	0.46	3.04	5.48	2.36	0.09	101.29	16	4505
Lake Svartk�lsj�rn (Sweden)	glass	68.67	0.46	15.22	5.79	0.16	0.47	3.15	5.26	2.36	0.08	101.64	16	4505
Lake Svartk�lsj�rn (Sweden)	glass	68.50	0.48	14.77	5.49	0.16	0.46	3.17	5.54	2.29	0.10	100.95	16	4505
Lake Svartk�lsj�rn (Sweden)	glass	68.28	0.48	15.33	5.67	0.18	0.42	3.12	5.48	2.36	0.10	101.42	16	4505
Lake Svartk�lsj�rn (Sweden)	glass	67.91	0.46	14.26	5.74	0.18	0.49	3.12	5.12	2.39	0.09	99.77	16	4505
Lake Svartk�lsj�rn (Sweden)	glass	67.77	0.47	14.95	5.80	0.18	0.44	3.08	4.83	2.38	0.08	99.99	16	4505
Lake Svartk�lsj�rn (Sweden)	glass	67.62	0.47	15.79	5.43	0.15	0.42	3.14	5.15	2.28	0.09	100.54	16	4505
Lake Svartk�lsj�rn (Sweden)	glass	67.48	0.47	14.71	5.62	0.18	0.46	3.00	5.43	2.28	0.10	99.72	16	4505
Lake Svartk�lsj�rn (Sweden)	glass	66.94	0.29	18.25	3.22	0.09	0.24	4.46	6.63	1.44	0.06	101.63	16	4505

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
16	Camca SX100 (University of Edinburgh)	2	15	PAP	Thin section mounted in araldite then ground and polished
17	Jeol 733 Superprobe (Queens University, Belfast)	10	15	ZAF	Thin section mounted in araldite then 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.

1561 - Hall, V.A. and Pilcher, J.R. (2002) Late-Quaternary Icelandic tephras in Ireland and Great Britain: detection, characterization and usefulness. The Holocene 12, 223-230..

1301 - Larsen, G., Dugmore, A., J. and Newton, A.J. (1999) Geochemistry of historic silicic tephras in Iceland. The Holocene 9(4), 463-471..

1958 - Pilcher, J., Bradley, R. S., Francus, P. and Anderson, L. (2005) A Holocene tephra record from the Lofoten Islands, Arctic Norway. Boreas 34, 136-156.

4505 - Watson, E.J., Swindles, G.T., Lawson, I.T. and Savov, I.P. (2016) Do peatlands or lakes provide the most comprehensive distal tephra records?. Quaternary Science Reviews 139, 110-128.

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 07:33:10 local time, Edinburgh, Scotland, UK.