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Deep generation of magmatic gas on the moon and implications for pyroclastic eruptions.

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Deep generation of magmatic gas on the moon and implications for pyroclastic eruptions. / Wilson, Lionel; Head, James W.
In: Geophysical Research Letters, Vol. 30, No. 12, 18.06.2003, p. 1605.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

Wilson, L & Head, JW 2003, 'Deep generation of magmatic gas on the moon and implications for pyroclastic eruptions.', Geophysical Research Letters, vol. 30, no. 12, pp. 1605. https://doi.org/10.1029/2002GL016082

APA

Wilson, L., & Head, J. W. (2003). Deep generation of magmatic gas on the moon and implications for pyroclastic eruptions. Geophysical Research Letters, 30(12), 1605. https://doi.org/10.1029/2002GL016082

Vancouver

Wilson L, Head JW. Deep generation of magmatic gas on the moon and implications for pyroclastic eruptions. Geophysical Research Letters. 2003 Jun 18;30(12):1605. doi: 10.1029/2002GL016082

Author

Wilson, Lionel ; Head, James W. / Deep generation of magmatic gas on the moon and implications for pyroclastic eruptions. In: Geophysical Research Letters. 2003 ; Vol. 30, No. 12. pp. 1605.

Bibtex

@article{f7f9382e6d484217a6d493dd8e8a938e,
title = "Deep generation of magmatic gas on the moon and implications for pyroclastic eruptions.",
abstract = "Lunar pyroclastic beads are interpreted to represent primitive magmas derived from great depths and rapidly erupted to the surface in explosive events. However, a detailed mechanism for gas generation at great depth and rapid magma transport to the surface has not yet been described. Furthermore, the pyroclastic beads are not petrogenetically related to basalts erupted near the sampling sites. We propose a model in which these conundrums are resolved through gas build-up in a low-pressure micro-environment near the tip of a magma-filled crack (dike) propagating rapidly from the magma source depth to the surface. The gas rich region consists of a free gas cavity overlying a foam extending vertically for ∼20 km. Eruption of the foam results in the widespread emplacement of unfractionated pyroclastic beads. Subsequent ascent of the underlying gas-free picritic magma is unlikely to occur, perhaps accounting for the lack of sampled eruptive equivalents.",
author = "Lionel Wilson and Head, {James W.}",
year = "2003",
month = jun,
day = "18",
doi = "10.1029/2002GL016082",
language = "English",
volume = "30",
pages = "1605",
journal = "Geophysical Research Letters",
issn = "0094-8276",
publisher = "John Wiley & Sons, Ltd",
number = "12",

}

RIS

TY - JOUR

T1 - Deep generation of magmatic gas on the moon and implications for pyroclastic eruptions.

AU - Wilson, Lionel

AU - Head, James W.

PY - 2003/6/18

Y1 - 2003/6/18

N2 - Lunar pyroclastic beads are interpreted to represent primitive magmas derived from great depths and rapidly erupted to the surface in explosive events. However, a detailed mechanism for gas generation at great depth and rapid magma transport to the surface has not yet been described. Furthermore, the pyroclastic beads are not petrogenetically related to basalts erupted near the sampling sites. We propose a model in which these conundrums are resolved through gas build-up in a low-pressure micro-environment near the tip of a magma-filled crack (dike) propagating rapidly from the magma source depth to the surface. The gas rich region consists of a free gas cavity overlying a foam extending vertically for ∼20 km. Eruption of the foam results in the widespread emplacement of unfractionated pyroclastic beads. Subsequent ascent of the underlying gas-free picritic magma is unlikely to occur, perhaps accounting for the lack of sampled eruptive equivalents.

AB - Lunar pyroclastic beads are interpreted to represent primitive magmas derived from great depths and rapidly erupted to the surface in explosive events. However, a detailed mechanism for gas generation at great depth and rapid magma transport to the surface has not yet been described. Furthermore, the pyroclastic beads are not petrogenetically related to basalts erupted near the sampling sites. We propose a model in which these conundrums are resolved through gas build-up in a low-pressure micro-environment near the tip of a magma-filled crack (dike) propagating rapidly from the magma source depth to the surface. The gas rich region consists of a free gas cavity overlying a foam extending vertically for ∼20 km. Eruption of the foam results in the widespread emplacement of unfractionated pyroclastic beads. Subsequent ascent of the underlying gas-free picritic magma is unlikely to occur, perhaps accounting for the lack of sampled eruptive equivalents.

U2 - 10.1029/2002GL016082

DO - 10.1029/2002GL016082

M3 - Journal article

VL - 30

SP - 1605

JO - Geophysical Research Letters

JF - Geophysical Research Letters

SN - 0094-8276

IS - 12

ER -