Pressures of Crystallization of Icelandic Magmas
Iceland lies astride the Mid-Atlantic Ridge and was created by sea-floor spreading that began about 55Ma.The crust is anomalously thick (20^40 km), indicating higher melt productivity in the underlying mantle compared with normal ridge segments as a result of the presence of a mantle plume or upwell...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.495.29 2023-05-15T16:40:49+02:00 Pressures of Crystallization of Icelandic Magmas Daniel F. Kelley Michael Barton The Pennsylvania State University CiteSeerX Archives 2007 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.495.29 http://petrology.oxfordjournals.org/content/49/3/465.full.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.495.29 http://petrology.oxfordjournals.org/content/49/3/465.full.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://petrology.oxfordjournals.org/content/49/3/465.full.pdf text 2007 ftciteseerx 2016-01-08T08:44:14Z Iceland lies astride the Mid-Atlantic Ridge and was created by sea-floor spreading that began about 55Ma.The crust is anomalously thick (20^40 km), indicating higher melt productivity in the underlying mantle compared with normal ridge segments as a result of the presence of a mantle plume or upwelling centered beneath the northwestern edge of the Vatnajo « kull ice sheet. Seismic and volcanic activity is concentrated in 50 km wide neovolcanic or rift zones, which mark the subaerial Mid-Atlantic Ridge, and in three flank zones. Geodetic and geophysical studies provide evidence for magma chambers located over a range of depths (15^21km) in the crust, with shallow magma chambers beneath some volcanic centers (Katla, Grimsvo « tn, Eyjafjallajo « kull), and both shallow and deep chambers beneath others (e.g. Krafla and Askja).We have compiled analyses of basalt glass with geochemical characteristics indicating crystallization of ol^plag^cpx from 28 volcanic centers in the Text Ice Sheet Iceland Katla Unknown Askja ENVELOPE(-16.802,-16.802,65.042,65.042) Katla ENVELOPE(-19.062,-19.062,63.631,63.631) Krafla ENVELOPE(-16.747,-16.747,65.713,65.713) Mid-Atlantic Ridge |
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Unknown |
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ftciteseerx |
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English |
description |
Iceland lies astride the Mid-Atlantic Ridge and was created by sea-floor spreading that began about 55Ma.The crust is anomalously thick (20^40 km), indicating higher melt productivity in the underlying mantle compared with normal ridge segments as a result of the presence of a mantle plume or upwelling centered beneath the northwestern edge of the Vatnajo « kull ice sheet. Seismic and volcanic activity is concentrated in 50 km wide neovolcanic or rift zones, which mark the subaerial Mid-Atlantic Ridge, and in three flank zones. Geodetic and geophysical studies provide evidence for magma chambers located over a range of depths (15^21km) in the crust, with shallow magma chambers beneath some volcanic centers (Katla, Grimsvo « tn, Eyjafjallajo « kull), and both shallow and deep chambers beneath others (e.g. Krafla and Askja).We have compiled analyses of basalt glass with geochemical characteristics indicating crystallization of ol^plag^cpx from 28 volcanic centers in the |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Daniel F. Kelley Michael Barton |
spellingShingle |
Daniel F. Kelley Michael Barton Pressures of Crystallization of Icelandic Magmas |
author_facet |
Daniel F. Kelley Michael Barton |
author_sort |
Daniel F. Kelley |
title |
Pressures of Crystallization of Icelandic Magmas |
title_short |
Pressures of Crystallization of Icelandic Magmas |
title_full |
Pressures of Crystallization of Icelandic Magmas |
title_fullStr |
Pressures of Crystallization of Icelandic Magmas |
title_full_unstemmed |
Pressures of Crystallization of Icelandic Magmas |
title_sort |
pressures of crystallization of icelandic magmas |
publishDate |
2007 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.495.29 http://petrology.oxfordjournals.org/content/49/3/465.full.pdf |
long_lat |
ENVELOPE(-16.802,-16.802,65.042,65.042) ENVELOPE(-19.062,-19.062,63.631,63.631) ENVELOPE(-16.747,-16.747,65.713,65.713) |
geographic |
Askja Katla Krafla Mid-Atlantic Ridge |
geographic_facet |
Askja Katla Krafla Mid-Atlantic Ridge |
genre |
Ice Sheet Iceland Katla |
genre_facet |
Ice Sheet Iceland Katla |
op_source |
http://petrology.oxfordjournals.org/content/49/3/465.full.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.495.29 http://petrology.oxfordjournals.org/content/49/3/465.full.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766031246042857472 |