All analyses of the SILK-YN Tephra

This search has found 20 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.

FeO: total iron is represented as FeO
*original totals for normalised data (where applicable)

Site Phase SiO2 TiO2 Al2O3 FeOMnOMgO CaO Na2O K2OTotal EP Ref
Eystriheidi (Iceland)glass67.530.9513.375.100.140.542.034.293.1797.1221318
Eystriheidi (Iceland)glass67.090.9813.915.180.170.822.724.422.9398.2221318
Eystriheidi (Iceland)glass66.970.9613.915.380.190.882.624.282.8698.0521318
Eystriheidi (Iceland)glass66.531.1213.905.800.150.932.753.922.8997.9921318
Eystriheidi (Iceland)glass66.381.0513.665.600.180.962.693.922.8297.2621318
Eystriheidi (Iceland)glass66.171.1914.025.710.191.003.044.422.6798.4121318
Eystriheidi (Iceland)glass66.081.1813.956.040.231.073.264.602.4898.8921318
Eystriheidi (Iceland)glass65.761.2514.135.710.191.113.073.942.7497.9021318
Eystriheidi (Iceland)glass65.721.0614.206.060.201.153.054.452.7298.6121318
Eystriheidi (Iceland)glass65.691.2714.106.250.141.183.104.572.7099.0021318
Eystriheidi (Iceland)glass65.421.1814.166.060.181.053.084.242.6798.0421318
Eystriheidi (Iceland)glass65.201.1213.996.040.161.033.104.342.6697.6421318
Eystriheidi (Iceland)glass65.041.1314.105.910.201.063.254.042.6397.3621318
Eystriheidi (Iceland)glass64.981.1613.955.890.211.133.134.092.7097.2421318
Eystriheidi (Iceland)glass64.741.0213.725.860.141.012.944.022.8796.3221318
Eystriheidi (Iceland)glass64.731.1613.776.110.191.193.214.372.7697.4921318
Eystriheidi (Iceland)glass64.581.1013.846.280.211.083.174.062.6196.9321318
Eystriheidi (Iceland)glass64.311.2514.066.020.221.073.103.932.7896.7421318
Eystriheidi (Iceland)glass64.241.0913.996.060.171.143.144.022.7796.6221318
Eystriheidi (Iceland)glass63.761.2013.895.980.231.053.104.032.8696.1021318

Instrument Conditions

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

Please refer to papers for full details of the instrument conditions, standards etc used to create these analyses
EP Instrument Beam current (nA) Beam voltage (kV) Correction Beam Sample Comments
2 Cambridge Instruments Microscan V (University of Edinburgh) 15 20 ZAF Thin section mounted in araldite then ground and polished

References

The data on this page is from the following source(s). If you use this data please acknowledge the source of the data. he number preceeding each reference matches the Ref number on the data table above.

1318 - Dugmore, A.J., Newton, A.J., Larsen, G. and Cook, G.T. (2000) Tephrochronology, environmental change and the Norse settlement of Iceland. Environmental Archaeology  5, 21-34..

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 5/7/2025 at 07:24:13 local time, Edinburgh, Scotland, UK.