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May 15, 2024, 5:28 pm UTC    
April 17, 2014 04:26AM
It is still not clear as to which volcano you are refering to... i.e. at which date?

But yes, each volcano has a particular chemical signal, but some of the signals can be quite similar. It would also involve identifying tephra in the ice for chemical analysis. So in principal if you have tephra you can try to link it to a volcano that is known to produce that tephra. In practice this is a lot harder than one is lead to believe.

If you are referring to the 536 and 540 volcanoes, then there have been suggestions for it. For example David Keys suggested that the 536 event might have been Krakatoa. Another candidate for either 536 or 540 is Rapaul, or Ilopango volcano in El Salvador.

Jonny

The path to good scholarship is paved with imagined patterns. - David M Raup
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