This search has found 13 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 analyse 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.

Geochemistry

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  SiO2 TiO2 Al2O3 FeOMnOMgO CaO Na2O K2OTotal EP Ref
Glass72.800.0513.031.860.090.031.323.572.94 95.69282747
Glass72.430.0913.221.910.120.051.304.812.75 96.67282747
Glass72.300.0712.921.960.100.051.364.972.82 96.55282747
Glass72.210.1012.691.890.090.041.344.902.78 96.03282747
Glass72.100.0412.821.860.070.011.254.822.81 95.79282747
Glass72.060.0913.151.850.100.051.284.592.78 95.95282747
Glass72.050.1012.901.830.110.001.424.382.80 95.58282747
Glass71.970.0912.971.870.100.061.264.922.83 96.06282747
Glass69.890.1013.852.770.150.001.894.662.50 95.81282747
Glass69.670.1913.722.920.130.071.964.282.47 95.42282747
Glass69.060.1713.763.560.180.082.235.362.36 96.76282747
Glass68.460.2213.923.420.160.072.295.512.36 96.41282747
Glass68.410.2313.673.630.210.072.185.182.38 95.95282747
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.

 

References

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.

2747: Tipping, R, Ashmore, P, Davies, A, Haggart, A, Moir, A, Newton., AJ, Sands, R, Skinner, T and Tisdall, E (2008) Prehistoric Pinus woodland dynamics in an upland landscape in northern Scotland: the roles of climate change and human impacts. Vegetation History Archaeobotony  17, 251-267.

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 22/10/2020 at 10:32:05 local time, Edinburgh, Scotland, UK.