Crustal thermal state and origin of silicic magma in Iceland: the case of Torfajökull, Ljósufjöll and Snæfellsjökull volcanoes
Abstract Pleistocene and Holocene peralkaline rhyolites from Torfajökull (South Iceland Volcanic Zone) and Ljósufjöll central volcanoes and trachytes from Snæfellsjökull (Snæfellsnes Volcanic Zone) allow the assessment of the mechanism for silicic magma genesis as a function of geographical location...
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Gespeichert in:
| Autor*in: |
Martin, E. [verfasserIn] |
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| Format: |
Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2007 |
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| Systematik: |
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| Anmerkung: |
© Springer-Verlag 2007 |
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| Übergeordnetes Werk: |
Enthalten in: Contributions to mineralogy and petrology - Springer-Verlag, 1966, 153(2007), 5 vom: 09. Jan., Seite 593-605 |
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| Übergeordnetes Werk: |
volume:153 ; year:2007 ; number:5 ; day:09 ; month:01 ; pages:593-605 |
| Links: |
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| DOI / URN: |
10.1007/s00410-006-0165-5 |
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| Katalog-ID: |
OLC2070526232 |
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| 245 | 1 | 0 | |a Crustal thermal state and origin of silicic magma in Iceland: the case of Torfajökull, Ljósufjöll and Snæfellsjökull volcanoes |
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| 520 | |a Abstract Pleistocene and Holocene peralkaline rhyolites from Torfajökull (South Iceland Volcanic Zone) and Ljósufjöll central volcanoes and trachytes from Snæfellsjökull (Snæfellsnes Volcanic Zone) allow the assessment of the mechanism for silicic magma genesis as a function of geographical location and crustal geothermal gradient. The low $ δ^{18} $O (2.4‰) and low Sr concentration (12.2 ppm) measured in Torfajökull rhyolites are best explained by partial melting of hydrated metabasaltic crust followed by major fractionation of feldspar. In contrast, very high 87Sr/86Sr (0.70473) and low Ba (8.7 ppm) and Sr (1.2 ppm) concentrations measured in Ljósufjöll silicic lavas are best explained by fractional crystallisation and subsequent 87Rb decay. Snæfellsjökull trachytes are also generated by fractional crystallisation, with less than 10% crustal assimilation, as inferred from their $ δ^{18} $O. The fact that silicic magmas within, or close to, the rift zone are principally generated by crustal melting whereas those from off-rift zones are better explained by fractional crystallisation clearly illustrates the controlling influence of the thermal state of the crust on silicic magma genesis in Iceland. | ||
| 650 | 4 | |a Silicic magma | |
| 650 | 4 | |a Fractional crystallisation | |
| 650 | 4 | |a Partial melting | |
| 650 | 4 | |a Assimilation | |
| 650 | 4 | |a Geothermal gradient | |
| 650 | 4 | |a Iceland | |
| 700 | 1 | |a Sigmarsson, O. |4 aut | |
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10.1007/s00410-006-0165-5 doi (DE-627)OLC2070526232 (DE-He213)s00410-006-0165-5-p DE-627 ger DE-627 rakwb eng 550 VZ 13 ssgn TE 1000 VZ rvk Martin, E. verfasserin aut Crustal thermal state and origin of silicic magma in Iceland: the case of Torfajökull, Ljósufjöll and Snæfellsjökull volcanoes 2007 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer-Verlag 2007 Abstract Pleistocene and Holocene peralkaline rhyolites from Torfajökull (South Iceland Volcanic Zone) and Ljósufjöll central volcanoes and trachytes from Snæfellsjökull (Snæfellsnes Volcanic Zone) allow the assessment of the mechanism for silicic magma genesis as a function of geographical location and crustal geothermal gradient. The low $ δ^{18} $O (2.4‰) and low Sr concentration (12.2 ppm) measured in Torfajökull rhyolites are best explained by partial melting of hydrated metabasaltic crust followed by major fractionation of feldspar. In contrast, very high 87Sr/86Sr (0.70473) and low Ba (8.7 ppm) and Sr (1.2 ppm) concentrations measured in Ljósufjöll silicic lavas are best explained by fractional crystallisation and subsequent 87Rb decay. Snæfellsjökull trachytes are also generated by fractional crystallisation, with less than 10% crustal assimilation, as inferred from their $ δ^{18} $O. The fact that silicic magmas within, or close to, the rift zone are principally generated by crustal melting whereas those from off-rift zones are better explained by fractional crystallisation clearly illustrates the controlling influence of the thermal state of the crust on silicic magma genesis in Iceland. Silicic magma Fractional crystallisation Partial melting Assimilation Geothermal gradient Iceland Sigmarsson, O. aut Enthalten in Contributions to mineralogy and petrology Springer-Verlag, 1966 153(2007), 5 vom: 09. Jan., Seite 593-605 (DE-627)129068721 (DE-600)1616-0 (DE-576)014400367 0010-7999 nnns volume:153 year:2007 number:5 day:09 month:01 pages:593-605 https://doi.org/10.1007/s00410-006-0165-5 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-GEO SSG-OPC-GGO GBV_ILN_21 GBV_ILN_22 GBV_ILN_30 GBV_ILN_31 GBV_ILN_40 GBV_ILN_70 GBV_ILN_285 GBV_ILN_381 GBV_ILN_2001 GBV_ILN_2004 GBV_ILN_2018 GBV_ILN_2027 GBV_ILN_4277 GBV_ILN_4306 GBV_ILN_4309 GBV_ILN_4311 GBV_ILN_4323 TE 1000 AR 153 2007 5 09 01 593-605 |
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10.1007/s00410-006-0165-5 doi (DE-627)OLC2070526232 (DE-He213)s00410-006-0165-5-p DE-627 ger DE-627 rakwb eng 550 VZ 13 ssgn TE 1000 VZ rvk Martin, E. verfasserin aut Crustal thermal state and origin of silicic magma in Iceland: the case of Torfajökull, Ljósufjöll and Snæfellsjökull volcanoes 2007 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer-Verlag 2007 Abstract Pleistocene and Holocene peralkaline rhyolites from Torfajökull (South Iceland Volcanic Zone) and Ljósufjöll central volcanoes and trachytes from Snæfellsjökull (Snæfellsnes Volcanic Zone) allow the assessment of the mechanism for silicic magma genesis as a function of geographical location and crustal geothermal gradient. The low $ δ^{18} $O (2.4‰) and low Sr concentration (12.2 ppm) measured in Torfajökull rhyolites are best explained by partial melting of hydrated metabasaltic crust followed by major fractionation of feldspar. In contrast, very high 87Sr/86Sr (0.70473) and low Ba (8.7 ppm) and Sr (1.2 ppm) concentrations measured in Ljósufjöll silicic lavas are best explained by fractional crystallisation and subsequent 87Rb decay. Snæfellsjökull trachytes are also generated by fractional crystallisation, with less than 10% crustal assimilation, as inferred from their $ δ^{18} $O. The fact that silicic magmas within, or close to, the rift zone are principally generated by crustal melting whereas those from off-rift zones are better explained by fractional crystallisation clearly illustrates the controlling influence of the thermal state of the crust on silicic magma genesis in Iceland. Silicic magma Fractional crystallisation Partial melting Assimilation Geothermal gradient Iceland Sigmarsson, O. aut Enthalten in Contributions to mineralogy and petrology Springer-Verlag, 1966 153(2007), 5 vom: 09. Jan., Seite 593-605 (DE-627)129068721 (DE-600)1616-0 (DE-576)014400367 0010-7999 nnns volume:153 year:2007 number:5 day:09 month:01 pages:593-605 https://doi.org/10.1007/s00410-006-0165-5 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-GEO SSG-OPC-GGO GBV_ILN_21 GBV_ILN_22 GBV_ILN_30 GBV_ILN_31 GBV_ILN_40 GBV_ILN_70 GBV_ILN_285 GBV_ILN_381 GBV_ILN_2001 GBV_ILN_2004 GBV_ILN_2018 GBV_ILN_2027 GBV_ILN_4277 GBV_ILN_4306 GBV_ILN_4309 GBV_ILN_4311 GBV_ILN_4323 TE 1000 AR 153 2007 5 09 01 593-605 |
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10.1007/s00410-006-0165-5 doi (DE-627)OLC2070526232 (DE-He213)s00410-006-0165-5-p DE-627 ger DE-627 rakwb eng 550 VZ 13 ssgn TE 1000 VZ rvk Martin, E. verfasserin aut Crustal thermal state and origin of silicic magma in Iceland: the case of Torfajökull, Ljósufjöll and Snæfellsjökull volcanoes 2007 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer-Verlag 2007 Abstract Pleistocene and Holocene peralkaline rhyolites from Torfajökull (South Iceland Volcanic Zone) and Ljósufjöll central volcanoes and trachytes from Snæfellsjökull (Snæfellsnes Volcanic Zone) allow the assessment of the mechanism for silicic magma genesis as a function of geographical location and crustal geothermal gradient. The low $ δ^{18} $O (2.4‰) and low Sr concentration (12.2 ppm) measured in Torfajökull rhyolites are best explained by partial melting of hydrated metabasaltic crust followed by major fractionation of feldspar. In contrast, very high 87Sr/86Sr (0.70473) and low Ba (8.7 ppm) and Sr (1.2 ppm) concentrations measured in Ljósufjöll silicic lavas are best explained by fractional crystallisation and subsequent 87Rb decay. Snæfellsjökull trachytes are also generated by fractional crystallisation, with less than 10% crustal assimilation, as inferred from their $ δ^{18} $O. The fact that silicic magmas within, or close to, the rift zone are principally generated by crustal melting whereas those from off-rift zones are better explained by fractional crystallisation clearly illustrates the controlling influence of the thermal state of the crust on silicic magma genesis in Iceland. Silicic magma Fractional crystallisation Partial melting Assimilation Geothermal gradient Iceland Sigmarsson, O. aut Enthalten in Contributions to mineralogy and petrology Springer-Verlag, 1966 153(2007), 5 vom: 09. Jan., Seite 593-605 (DE-627)129068721 (DE-600)1616-0 (DE-576)014400367 0010-7999 nnns volume:153 year:2007 number:5 day:09 month:01 pages:593-605 https://doi.org/10.1007/s00410-006-0165-5 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-GEO SSG-OPC-GGO GBV_ILN_21 GBV_ILN_22 GBV_ILN_30 GBV_ILN_31 GBV_ILN_40 GBV_ILN_70 GBV_ILN_285 GBV_ILN_381 GBV_ILN_2001 GBV_ILN_2004 GBV_ILN_2018 GBV_ILN_2027 GBV_ILN_4277 GBV_ILN_4306 GBV_ILN_4309 GBV_ILN_4311 GBV_ILN_4323 TE 1000 AR 153 2007 5 09 01 593-605 |
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10.1007/s00410-006-0165-5 doi (DE-627)OLC2070526232 (DE-He213)s00410-006-0165-5-p DE-627 ger DE-627 rakwb eng 550 VZ 13 ssgn TE 1000 VZ rvk Martin, E. verfasserin aut Crustal thermal state and origin of silicic magma in Iceland: the case of Torfajökull, Ljósufjöll and Snæfellsjökull volcanoes 2007 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer-Verlag 2007 Abstract Pleistocene and Holocene peralkaline rhyolites from Torfajökull (South Iceland Volcanic Zone) and Ljósufjöll central volcanoes and trachytes from Snæfellsjökull (Snæfellsnes Volcanic Zone) allow the assessment of the mechanism for silicic magma genesis as a function of geographical location and crustal geothermal gradient. The low $ δ^{18} $O (2.4‰) and low Sr concentration (12.2 ppm) measured in Torfajökull rhyolites are best explained by partial melting of hydrated metabasaltic crust followed by major fractionation of feldspar. In contrast, very high 87Sr/86Sr (0.70473) and low Ba (8.7 ppm) and Sr (1.2 ppm) concentrations measured in Ljósufjöll silicic lavas are best explained by fractional crystallisation and subsequent 87Rb decay. Snæfellsjökull trachytes are also generated by fractional crystallisation, with less than 10% crustal assimilation, as inferred from their $ δ^{18} $O. The fact that silicic magmas within, or close to, the rift zone are principally generated by crustal melting whereas those from off-rift zones are better explained by fractional crystallisation clearly illustrates the controlling influence of the thermal state of the crust on silicic magma genesis in Iceland. Silicic magma Fractional crystallisation Partial melting Assimilation Geothermal gradient Iceland Sigmarsson, O. aut Enthalten in Contributions to mineralogy and petrology Springer-Verlag, 1966 153(2007), 5 vom: 09. Jan., Seite 593-605 (DE-627)129068721 (DE-600)1616-0 (DE-576)014400367 0010-7999 nnns volume:153 year:2007 number:5 day:09 month:01 pages:593-605 https://doi.org/10.1007/s00410-006-0165-5 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-GEO SSG-OPC-GGO GBV_ILN_21 GBV_ILN_22 GBV_ILN_30 GBV_ILN_31 GBV_ILN_40 GBV_ILN_70 GBV_ILN_285 GBV_ILN_381 GBV_ILN_2001 GBV_ILN_2004 GBV_ILN_2018 GBV_ILN_2027 GBV_ILN_4277 GBV_ILN_4306 GBV_ILN_4309 GBV_ILN_4311 GBV_ILN_4323 TE 1000 AR 153 2007 5 09 01 593-605 |
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10.1007/s00410-006-0165-5 doi (DE-627)OLC2070526232 (DE-He213)s00410-006-0165-5-p DE-627 ger DE-627 rakwb eng 550 VZ 13 ssgn TE 1000 VZ rvk Martin, E. verfasserin aut Crustal thermal state and origin of silicic magma in Iceland: the case of Torfajökull, Ljósufjöll and Snæfellsjökull volcanoes 2007 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer-Verlag 2007 Abstract Pleistocene and Holocene peralkaline rhyolites from Torfajökull (South Iceland Volcanic Zone) and Ljósufjöll central volcanoes and trachytes from Snæfellsjökull (Snæfellsnes Volcanic Zone) allow the assessment of the mechanism for silicic magma genesis as a function of geographical location and crustal geothermal gradient. The low $ δ^{18} $O (2.4‰) and low Sr concentration (12.2 ppm) measured in Torfajökull rhyolites are best explained by partial melting of hydrated metabasaltic crust followed by major fractionation of feldspar. In contrast, very high 87Sr/86Sr (0.70473) and low Ba (8.7 ppm) and Sr (1.2 ppm) concentrations measured in Ljósufjöll silicic lavas are best explained by fractional crystallisation and subsequent 87Rb decay. Snæfellsjökull trachytes are also generated by fractional crystallisation, with less than 10% crustal assimilation, as inferred from their $ δ^{18} $O. The fact that silicic magmas within, or close to, the rift zone are principally generated by crustal melting whereas those from off-rift zones are better explained by fractional crystallisation clearly illustrates the controlling influence of the thermal state of the crust on silicic magma genesis in Iceland. Silicic magma Fractional crystallisation Partial melting Assimilation Geothermal gradient Iceland Sigmarsson, O. aut Enthalten in Contributions to mineralogy and petrology Springer-Verlag, 1966 153(2007), 5 vom: 09. Jan., Seite 593-605 (DE-627)129068721 (DE-600)1616-0 (DE-576)014400367 0010-7999 nnns volume:153 year:2007 number:5 day:09 month:01 pages:593-605 https://doi.org/10.1007/s00410-006-0165-5 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-GEO SSG-OPC-GGO GBV_ILN_21 GBV_ILN_22 GBV_ILN_30 GBV_ILN_31 GBV_ILN_40 GBV_ILN_70 GBV_ILN_285 GBV_ILN_381 GBV_ILN_2001 GBV_ILN_2004 GBV_ILN_2018 GBV_ILN_2027 GBV_ILN_4277 GBV_ILN_4306 GBV_ILN_4309 GBV_ILN_4311 GBV_ILN_4323 TE 1000 AR 153 2007 5 09 01 593-605 |
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crustal thermal state and origin of silicic magma in iceland: the case of torfajökull, ljósufjöll and snæfellsjökull volcanoes |
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Crustal thermal state and origin of silicic magma in Iceland: the case of Torfajökull, Ljósufjöll and Snæfellsjökull volcanoes |
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Abstract Pleistocene and Holocene peralkaline rhyolites from Torfajökull (South Iceland Volcanic Zone) and Ljósufjöll central volcanoes and trachytes from Snæfellsjökull (Snæfellsnes Volcanic Zone) allow the assessment of the mechanism for silicic magma genesis as a function of geographical location and crustal geothermal gradient. The low $ δ^{18} $O (2.4‰) and low Sr concentration (12.2 ppm) measured in Torfajökull rhyolites are best explained by partial melting of hydrated metabasaltic crust followed by major fractionation of feldspar. In contrast, very high 87Sr/86Sr (0.70473) and low Ba (8.7 ppm) and Sr (1.2 ppm) concentrations measured in Ljósufjöll silicic lavas are best explained by fractional crystallisation and subsequent 87Rb decay. Snæfellsjökull trachytes are also generated by fractional crystallisation, with less than 10% crustal assimilation, as inferred from their $ δ^{18} $O. The fact that silicic magmas within, or close to, the rift zone are principally generated by crustal melting whereas those from off-rift zones are better explained by fractional crystallisation clearly illustrates the controlling influence of the thermal state of the crust on silicic magma genesis in Iceland. © Springer-Verlag 2007 |
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Abstract Pleistocene and Holocene peralkaline rhyolites from Torfajökull (South Iceland Volcanic Zone) and Ljósufjöll central volcanoes and trachytes from Snæfellsjökull (Snæfellsnes Volcanic Zone) allow the assessment of the mechanism for silicic magma genesis as a function of geographical location and crustal geothermal gradient. The low $ δ^{18} $O (2.4‰) and low Sr concentration (12.2 ppm) measured in Torfajökull rhyolites are best explained by partial melting of hydrated metabasaltic crust followed by major fractionation of feldspar. In contrast, very high 87Sr/86Sr (0.70473) and low Ba (8.7 ppm) and Sr (1.2 ppm) concentrations measured in Ljósufjöll silicic lavas are best explained by fractional crystallisation and subsequent 87Rb decay. Snæfellsjökull trachytes are also generated by fractional crystallisation, with less than 10% crustal assimilation, as inferred from their $ δ^{18} $O. The fact that silicic magmas within, or close to, the rift zone are principally generated by crustal melting whereas those from off-rift zones are better explained by fractional crystallisation clearly illustrates the controlling influence of the thermal state of the crust on silicic magma genesis in Iceland. © Springer-Verlag 2007 |
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Abstract Pleistocene and Holocene peralkaline rhyolites from Torfajökull (South Iceland Volcanic Zone) and Ljósufjöll central volcanoes and trachytes from Snæfellsjökull (Snæfellsnes Volcanic Zone) allow the assessment of the mechanism for silicic magma genesis as a function of geographical location and crustal geothermal gradient. The low $ δ^{18} $O (2.4‰) and low Sr concentration (12.2 ppm) measured in Torfajökull rhyolites are best explained by partial melting of hydrated metabasaltic crust followed by major fractionation of feldspar. In contrast, very high 87Sr/86Sr (0.70473) and low Ba (8.7 ppm) and Sr (1.2 ppm) concentrations measured in Ljósufjöll silicic lavas are best explained by fractional crystallisation and subsequent 87Rb decay. Snæfellsjökull trachytes are also generated by fractional crystallisation, with less than 10% crustal assimilation, as inferred from their $ δ^{18} $O. The fact that silicic magmas within, or close to, the rift zone are principally generated by crustal melting whereas those from off-rift zones are better explained by fractional crystallisation clearly illustrates the controlling influence of the thermal state of the crust on silicic magma genesis in Iceland. © Springer-Verlag 2007 |
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