Computer Science
Scientific paper
Dec 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991gecoa..55.3735r&link_type=abstract
Geochimica et Cosmochimica Acta, vol. 55, Issue 12, pp.3735-3740
Computer Science
4
Scientific paper
The concentrations of members of the 238 U decay chain and 232 Th have been determined for the lavas that erupted on the East Rift Zone of Kilauea Volcano, Hawaii (Puu Oo) between January 1983 and January 1985. There was a decrease during the first 180 days in the abundances of all nuclides, following the behavior of the incompatible elements. ( 230 Th/ 238 U) varies with ( 232 Th/ 238 U) yielding a batch process age for the source magma of 127,800 ±28,500 (2 ) y, similar to East Pacific Rise basalts. No ( 226 Ra/ 230 Th) disequilibrium was evident at Puu Oo although Haleakala and Loihi show significant excesses of ( 226 Ra) over ( 230 Th). The initial ( 210 Pb) excess relative to ( 226 Ra) implies strong incompatibility of 210 Pb probably with the help of chloride complexing, and the deficiency in later episodes indicates volatilization from the melt mediated by the formation of volatile chloride compounds.
Reinitz I. M.
Turekian Karl K.
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