Transcript Nugget

Ilya Bindeman, Erwan Martin
Stratigraphic section of dry Lake Tecopa with ash
proportion and isotopic parameters measured in the
leached sulphate from the volcanic ash. The curve fits
the maximum 17-O excess related to the mass
independent signature of oxygen.
Excesses of 17-O in volcanic ash sulfate from three
supereruptons is inherited from the ozone layer. Mass
independent signature were proposed to be used as
statigraphic correlation tools in old bentonites.