Residence time analysis of geochemical fluctuations in volcanic series

Details Residence time analysis of geochemical fluctuations in volcanic series Residence time analysis of geochemical fluctuations in volcanic series

Feb 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993gecoa..57..615a&link_type=abstract

Geochimica et Cosmochimica Acta (ISSN 0016-7037), vol. 57, no. 3, p. 615-621.

Physics

17

Geochemistry, Magma, Time Series Analysis, Volcanology, Cerium, Lava, Strontium Isotopes, Ytterbium

Scientific paper

A model for estimation of magma residence times in volcanic eruptions has been developed. Residence times are estimated using the rate of change of isotopic or incompatible element ratios in lavas. Fourier analysis of the geochemical signal damped and delayed by the magma reservoir combined with eruption rates also provides a robust estimate for the residence time of magmas in deep reservoirs and the size of magma chambers. The magma chambers are likely to be distinct from the geophysically defined magma bodies.

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