Search by Geochemistry
Use this form to search for tephra layers that have particular geochemical characteristics. This will produce a list of tephra layers with at least one analysis that matches the search critera. Click on that tephra layer to view all of its geochemical analyses.
- Enter the lower and upper values for at least one oxide
- Make sure you enter a value into both fields of any oxide you wish to search
- Do not be too specific in your search, i.e. do not search too many oxides at one time and be careful when using decimal places