Hekla 4 Tephra at Loch Leir

This search has found 29 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
Glass74.980.1512.931.850. 98.582853
Glass74.810.1412.151.950. 97.182853
Glass74.610.1012.811.830.040.061.374.142.71 97.672853
Glass74.560.0912.411.750. 97.022853
Glass74.510.1212.922. 98.282853
Glass74.420.1012.882. 98.302853
Glass74.310.1313. 97.802853
Glass74.190.1013. 98.712853
Glass74.020.1212.851.990. 97.922853
Glass73.920.1212.961.860.060.011.364.352.72 97.362853
Glass73.690.0812.451.810. 96.252853
Glass73.650.0713. 96.822853
Glass73.510.0612.561.920.090.041.323.932.89 96.322853
Glass73.370.1613.662.770.090.011.804.372.70 98.922853
Glass72.210.2214.313.650. 99.922853
Glass71.170.2413.753.440.120.042.304.692.35 98.092853
Glass70.590.2013.693.480. 97.202853
Glass70.030.2813.914.410.190.072.644.312.13 97.972853
Glass69.680.2914.384.470.180.072.834.562.29 98.742853
Glass69.230.3313.644.380.220.102.604.922.17 97.582853
Glass68.990.3413.935.760. 99.082853
Glass68.770.2413.513. 95.202853
Glass68.760.3014.194.700.190.162.604.212.08 97.202853
Glass67.410.4114.284.880.190.152.604.742.09 96.752853
Glass64.720.6614.238.690.340.514.234.411.70 99.892853
Glass64.340.6314.868.530.230.644.364.031.73 99.362853
Glass63.600.7214.308.720.300.554.554.251.65 98.642853
Glass63.400.7714.529.190.260.704.273.901.71 98.722853
Glass63.320.6914.618.700.370.574.144.761.84 99.002853
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 preceeding 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 19/4/2021 at 09:30:28 local time, Edinburgh, Scotland, UK.