QUB-571 Group 2 (Landnám Tephra/QUB-571 Group 2 Tephra) at Borge

This search has found 7 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.


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  SiO2 TiO2 Al2O3 FeOMnOMgO CaO Na2O K2OTotal EP Ref
Glass71.340.2814.772.58 0.290.974.914.39 99.52171958
Glass70.450.3114.622.60 0.301.004.914.59 98.78171958
Glass69.410.3114.212.45 0.270.864.684.38 96.56171958
Glass69.350.3114.592.71 0.391.194.744.44 97.73171958
Glass69.350.2514.482.35 0.260.844.714.53 96.76171958
Glass69.310.2714.462.50 0.280.975.074.45 97.30171958
Glass69.070.3214.312.53 0.320.954.954.35 96.79171958
FeO: total iron is represented as FeO
*original totals for normalised data (where applicable)

Instrument Conditions

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



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.

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.

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 22/4/2024 at 06:45:27 local time, Edinburgh, Scotland, UK.