U-238- and Th-232-series chronology of phonolite fractionation at Mount Erebus, Antarctica

Details U-238- and Th-232-series chronology of phonolite fractionation at Mount Erebus, Antarctica U-238- and Th-232-series chronology of phonolite fractionation at Mount Erebus, Antarctica

Mar 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992gecoa..56.1401r&link_type=abstract

Geochimica et Cosmochimica Acta (ISSN 0016-7037), vol. 56, no. 3, March 1992, p. 1401-1407. Research supported by DOE.

Physics

10

Fractionation, Geochronology, Igneous Rocks, Thorium Isotopes, Uranium Isotopes, Volcanology, Antarctic Regions, Barium, Magma, Obsidian Glass, Radium

Scientific paper

Some of the first uranium thorium, and radium nuclide and barium abundance data from phonolites erupted in 1984 and 1988 from Mount Erebus, Antarctica are reported. The data are used to constrain the time scales of anorthoclase megacryst growth and, by inference, the residence times and histories of anorthoclase phonolite differentiation at Mount Erebus.

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