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Geochemical Journal
Geochemical Journal An open access journal for geochemistry
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Published for geochemistry community from Geochemical Society of Japan.

Rare-gas releasing experiments and Rn degassing from erupting magma

Kazuo Sato, Ichiro Kaneoka, Jun Sato
Geochemical Journal, Vol. 14, No. 2, P. 91-94, 1980

ABSTRACT

A basaltic rock sample heated up to 1, 300° releases only a part of the total Rn, whereas substantial fractions of the other rare gases are expelled at lower temperatures. The experimental results obtained for Rn release are considerably different from the observations on the 236Ra-222Rn disequilibrium in fragments of erupting magmas, which generally show much greater Rn-releasing efficiencies. The role of major volatile components in the degassing of felsic magmas is discussed.

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