Hekla 3 Tephra at Orrastašir

This search has found 31 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
Glass73.380.1414. 99.932969
Glass73.250.1514. 99.822969
Glass72.950.2014. 99.882969
Glass71.920.1914. 98.922969
Glass71.610.1814. 98.252969
Glass71.550.2013.934.610. 99.342969
Glass71.440.1214.082.910.140.141.964.502.49 97.782969
Glass71.410.1613.852.850. 97.762969
Glass70.920.1813.793. 96.812969
Glass69.770.1513.963. 95.562969
Glass68.030.5414.835.680.160.433.654.631.71 99.672969
Glass67.710.3714.585.400.180.413.514.072.29 98.532969
Glass67.140.4714.965.860.160.473.464.241.84 98.632969
Glass66.990.3514.775.810.220.443.184.272.17 98.202969
Glass66.820.5114.946.580.190.603.733.891.91 99.172969
Glass66.500.5615.016.750.220.663.814.242.14 99.902969
Glass66.220.4214.676.110.170.553.814.021.91 97.882969
Glass65.990.4914.966.320.190.603.744.542.02 98.872969
Glass65.970.6815.446.830.160.623.843.911.91 99.352969
Glass65.610.4614.946.190.190.473.464.332.09 97.742969
Glass65.010.6214.987.220.140.674.034.211.89 98.782969
Glass64.380.5014.716.230.180.633.484.201.87 96.202969
Glass64.380.4714.866.570.250.633.634.282.07 97.132969
Glass63.930.6515.166.640.170.734.104.081.88 97.342969
Glass63.600.6715.097.940.270.934.264.151.79 98.722969
Glass63.350.7615.157.970.230.984.554.141.80 98.932969
Glass63.090.8915.228.360.191.054.653.931.76 99.152969
Glass63.070.6315.297.620.230.864.524.031.99 98.242969
Glass62.840.7414.897.640.210.864.284.021.76 97.252969
Glass56.821.8913.2810.990.232.566.243.761.51 97.282969
Glass56.181.2316.818.680.242.627.224.881.81 99.672969
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.

969: Boygle, J.E. (1994) Tephra in lake sediments: An unambiguous geochronological marker?  PhD. Thesis, University of Edinburgh, Edinburgh,

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 16/4/2024 at 18:34:46 local time, Edinburgh, Scotland, UK.