Hekla 4 Tephra at Keiths Peat Bank

This search has found 24 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.


To download this data as a tab delimited file click here: save

  SiO2 TiO2 Al2O3 FeOMnOMgO CaO Na2O K2OTotal EP Ref
Glass74.980.1513.201.800. 98.822853
Glass74.790.1112.521.590. 96.702853
Glass74.450.1012.501.730. 97.212853
Glass74.270.0812.852. 97.802853
Glass74.150.0813.031.820. 97.632853
Glass74.080.1612.812. 97.932853
Glass73.940.1012.471.530. 96.342853
Glass73.520.1312.961.860.110.021.304.362.69 96.972853
Glass73.400.0812.631.860. 96.072853
Glass73.060.1212.951.800. 97.012853
Glass73.010.1312.521.830. 95.742853
Glass72.870.0713. 97.042853
Glass72.590.1312.561.940. 96.202853
Glass72.160.1914.013.550.150.022.304.422.55 99.352853
Glass71.250.2613.944. 99.102853
Glass70.610.2114. 97.922853
Glass69.330.3413.935.460. 99.152853
Glass67.290.3313.735.500.190.162.894.612.06 96.762853
Glass66.530.3714.206.320.210.163.434.361.84 97.432853
Glass64.380.7414.578.270.290.794.124.211.50 98.862853
Glass63.670.6413.878.280.250.524.154.451.69 97.532853
Glass63.640.7814.549.150.370.754.474.191.57 99.242853
Glass61.740.7714.589.150.320.724.344.611.52 97.742853
Glass61.670.7514.338.390.290.564.023.991.59 95.602853
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.

853: Dugmore, A.J., Larsen, G, and Newton, A.J. (1995) Seven tephra isochrones in Scotland. The Holocene  5/3, 257-266.

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 3/3/2024 at 00:18:34 local time, Edinburgh, Scotland, UK.