CRM 1.39-1.4 (Hekla 4 Tephra) at Craigmaud Moss

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.


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

  SiO2 TiO2 Al2O3 FeOMnOMgO CaO Na2O K2OTotal EP Ref
Glass75.550.1513.402. 99.8821731
Glass75.210.1213.362. 99.4121731
Glass75.100.1813.412. 99.5321731
Glass74.990.0713.191.980.090.011.333.892.84 98.3921731
Glass74.710.0813.081.930.110.011.354.062.75 98.0821731
Glass74.450.1113.581.980.130.101.373.422.72 97.8621731
Glass74.300.1112.652. 97.2321731
Glass74.170.1112.901.970.060.031.353.842.92 97.3521731
Glass74.140.1812.991.890.100.031.384.033.01 97.7521731
Glass74.010.0912.961.980.130.011.323.972.67 97.1421731
Glass73.800.1513. 96.6421731
Glass73.760.1213.181.970.050.041.303.553.09 97.0621731
Glass73.680.1313.352. 97.5021731
Glass73.560.1013. 96.2921731
Glass73.360.1012.931.920.080.001.333.292.74 95.7521731
Glass73.210.0812.822. 96.5821731
Glass73.100.1012.641.880.090.021.304.412.71 96.2521731
Glass73.080.1512.711.760. 95.7821731
Glass72.860.1112.701.800. 95.2821731
Glass72.780.1913.312. 96.5221731
Glass72.700.1013. 96.0021731
Glass72.690.0812.541.910. 95.2221731
Glass72.550.1313.772.790.110.061.793.832.60 97.6321731
Glass72.320.1112.402. 96.1921731
Glass72.310.0712.621.890. 95.1121731
Glass71.890.1313. 95.1821731
Glass71.060.2414.103.360. 97.1821731
Glass70.710.2213.613.390. 97.0921731
Glass70.410.2213.773.780. 96.6821731
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.

1731: Langdon, P.G. and Barber, K.E. (2004) Snapshots in time: precise correlations of peat-based proxy climate records in Scotland using mid-Holocene tephras. The Holocene  14, 21-33..

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 2/3/2024 at 22:58:20 local time, Edinburgh, Scotland, UK.