Petrochemistry of the Gjalp-1996 subglacial eruption, Vatnajokull, SE Iceland

S. Steinthorsson; B. S. Hardarson; R. M. Ellam; G. Larsen

doi:10.1016/S0377-0273(99)00186-9

Petrochemistry of the Gjalp-1996 subglacial eruption, Vatnajokull, SE Iceland

S. Steinthorsson
, B. S. Hardarson
, R. M. Ellam
, G. Larsen

Engineering and Natural Sciences

University of Iceland

Research output: Contribution to journal › Article › peer-review

Abstract

In October 1996 a subglacial fissure to the north of the Grimsvotn caldera in W-Vatnajokull produced about 0.4 km³ of Fe-rich basaltic andesite-icelandite-in an area characterized mostly by tholeiitic basalt. In this paper the chemical composition of volcanic systems in the region is discussed with the help of six new analyses and others from the literature, and a tentative model for their evolution is proposed, in which magma produced by the partial melting of a two-component mantle mixes with hydrous, silicic melt in the crust. The Vatnajokull 1996 magma belongs to a separate volcanic system, intermediate between Bardarbunga and Grimsvotn. (C) 2000 Elsevier Science B.V. All rights reserved.

Original language	English
Pages (from-to)	79-90
Number of pages	12
Journal	Journal of Volcanology and Geothermal Research
Volume	98
Issue number	1-4
DOIs	https://doi.org/10.1016/S0377-0273(99)00186-9
Publication status	Published - May 2000

Other keywords

Iceland mantle plume
Icelandite
Isotope geochemistry
Magma evolution
Two-component mantle

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10.1016/S0377-0273(99)00186-9

Cite this

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title = "Petrochemistry of the Gjalp-1996 subglacial eruption, Vatnajokull, SE Iceland",

abstract = "In October 1996 a subglacial fissure to the north of the Grimsvotn caldera in W-Vatnajokull produced about 0.4 km3 of Fe-rich basaltic andesite-icelandite-in an area characterized mostly by tholeiitic basalt. In this paper the chemical composition of volcanic systems in the region is discussed with the help of six new analyses and others from the literature, and a tentative model for their evolution is proposed, in which magma produced by the partial melting of a two-component mantle mixes with hydrous, silicic melt in the crust. The Vatnajokull 1996 magma belongs to a separate volcanic system, intermediate between Bardarbunga and Grimsvotn. (C) 2000 Elsevier Science B.V. All rights reserved.",

keywords = "Iceland mantle plume, Icelandite, Isotope geochemistry, Magma evolution, Two-component mantle",

author = "S. Steinthorsson and Hardarson, \{B. S.\} and Ellam, \{R. M.\} and G. Larsen",

year = "2000",

month = may,

doi = "10.1016/S0377-0273(99)00186-9",

language = "English",

volume = "98",

pages = "79--90",

journal = "Journal of Volcanology and Geothermal Research",

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publisher = "Elsevier B.V.",

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}

TY - JOUR

T1 - Petrochemistry of the Gjalp-1996 subglacial eruption, Vatnajokull, SE Iceland

AU - Steinthorsson, S.

AU - Hardarson, B. S.

AU - Ellam, R. M.

AU - Larsen, G.

PY - 2000/5

Y1 - 2000/5

N2 - In October 1996 a subglacial fissure to the north of the Grimsvotn caldera in W-Vatnajokull produced about 0.4 km3 of Fe-rich basaltic andesite-icelandite-in an area characterized mostly by tholeiitic basalt. In this paper the chemical composition of volcanic systems in the region is discussed with the help of six new analyses and others from the literature, and a tentative model for their evolution is proposed, in which magma produced by the partial melting of a two-component mantle mixes with hydrous, silicic melt in the crust. The Vatnajokull 1996 magma belongs to a separate volcanic system, intermediate between Bardarbunga and Grimsvotn. (C) 2000 Elsevier Science B.V. All rights reserved.

AB - In October 1996 a subglacial fissure to the north of the Grimsvotn caldera in W-Vatnajokull produced about 0.4 km3 of Fe-rich basaltic andesite-icelandite-in an area characterized mostly by tholeiitic basalt. In this paper the chemical composition of volcanic systems in the region is discussed with the help of six new analyses and others from the literature, and a tentative model for their evolution is proposed, in which magma produced by the partial melting of a two-component mantle mixes with hydrous, silicic melt in the crust. The Vatnajokull 1996 magma belongs to a separate volcanic system, intermediate between Bardarbunga and Grimsvotn. (C) 2000 Elsevier Science B.V. All rights reserved.

KW - Iceland mantle plume

KW - Icelandite

KW - Isotope geochemistry

KW - Magma evolution

KW - Two-component mantle

UR - https://www.scopus.com/pages/publications/0033929094

U2 - 10.1016/S0377-0273(99)00186-9

DO - 10.1016/S0377-0273(99)00186-9

M3 - Article

SN - 0377-0273

VL - 98

SP - 79

EP - 90

JO - Journal of Volcanology and Geothermal Research

JF - Journal of Volcanology and Geothermal Research

IS - 1-4

ER -

Petrochemistry of the Gjalp-1996 subglacial eruption, Vatnajokull, SE Iceland

Abstract

Other keywords

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