Hydrogen isotopic evidence of rhyolitic magma degassing during shallow intrusion and eruption

Hydrogen isotopic evidence of rhyolitic magma degassing during shallow intrusion and eruption

Deuterium and water contents of rhyolite obsidian tephra clasts and lava flows sampled in the western USA decrease within each eruptive sequence, from D- and H 2 O-rich, explosive (Plinian) eruptions, to D- and H 2 O-depleted lava flows. These changes result not from volatile gradients in the magma,...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Nature (London) 1983-12, Vol.306 (5943), p.541-545
Hauptverfasser: Taylor, B. E., Eichelberger, J. C., Westrich, H. R.
Format: Artikel
Sprache:eng
Schlagworte:
Earth sciences
Earth, ocean, space
Exact sciences and technology
Humanities and Social Sciences
Isotope geochemistry
Isotope geochemistry. Geochronology
multidisciplinary
Science
Science (multidisciplinary)
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:Deuterium and water contents of rhyolite obsidian tephra clasts and lava flows sampled in the western USA decrease within each eruptive sequence, from D- and H 2 O-rich, explosive (Plinian) eruptions, to D- and H 2 O-depleted lava flows. These changes result not from volatile gradients in the magma, but rather from progressive in situ degassing; involvement of meteoric water is excluded.
ISSN:0028-0836
1476-4687
DOI:10.1038/306541a0