Geochemistry and eruptive behaviour of the Finca la Nava maar volcano (Campo de Calatrava, south-central Spain)
Abstract Here we present a detailed investigation into the geochemistry and the excavational/depositional processes involved in the maar-diatreme forming Finca la Nava (FlN) eruption in south-central Spain. Bulk rock compositions of hand-picked juvenile fragments indicate derivation of the FIN magma...
Ausführliche Beschreibung
Autor*in: |
Lierenfeld, Matthias Bernhard [verfasserIn] |
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Artikel |
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Sprache: |
Englisch |
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2015 |
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Anmerkung: |
© Springer-Verlag Berlin Heidelberg 2015 |
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Übergeordnetes Werk: |
Enthalten in: International journal of earth sciences - Springer Berlin Heidelberg, 1999, 104(2015), 7 vom: 28. März, Seite 1795-1817 |
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Übergeordnetes Werk: |
volume:104 ; year:2015 ; number:7 ; day:28 ; month:03 ; pages:1795-1817 |
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DOI / URN: |
10.1007/s00531-015-1164-4 |
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Katalog-ID: |
OLC2070428818 |
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520 | |a Abstract Here we present a detailed investigation into the geochemistry and the excavational/depositional processes involved in the maar-diatreme forming Finca la Nava (FlN) eruption in south-central Spain. Bulk rock compositions of hand-picked juvenile fragments indicate derivation of the FIN magma from a garnet-bearing mantle source, which has subsequently been overprinted in bulk rock samples by incorporation of a combination of spinel-bearing peridotites and upper-crustal lithics (i.e. quartzites and slates). The dominating phenocryst assemblage with clinopyroxene, olivine, amphibole and phlogopite points to the classification of the juvenile magma as being olivine melilititic in composition. Ascent through the lithosphere was rapid as indicated by the calculations of settling rates of mantle peridotites (~0.8 m $ s^{−1} $). The original magma fragmentation level in the conduit was probably relatively shallow carrying mainly juvenile pyroclasts (~60 %) intermixed with accidental crustal lithics (~35 %) and mantle xenoliths (<5 %) to the surface. The shapes of individual pyroclasts are sub-rounded to rounded and with highly variable vesicularities (5–45 %). This fact, in combination with abundant fine-grained material in the beginning of the eruption, indicates that both magmatic and phreatomagmatic fragmentation processes may have played important roles in forming the FIN maar. A relatively constant increase in quartzitic fragments from ~35 to <60 % with increasing stratigraphic height in the FIN deposits further indicates that the crater area successively widened during the eruption, which resulted in an increased recycling of quartzitic fragments. This eruption scenario, with the formation of a diatreme at depth, is also consistent with the absence of layers dipping inwards into the crater area. | ||
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10.1007/s00531-015-1164-4 doi (DE-627)OLC2070428818 (DE-He213)s00531-015-1164-4-p DE-627 ger DE-627 rakwb eng 550 VZ 550 VZ 13 ssgn Lierenfeld, Matthias Bernhard verfasserin aut Geochemistry and eruptive behaviour of the Finca la Nava maar volcano (Campo de Calatrava, south-central Spain) 2015 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer-Verlag Berlin Heidelberg 2015 Abstract Here we present a detailed investigation into the geochemistry and the excavational/depositional processes involved in the maar-diatreme forming Finca la Nava (FlN) eruption in south-central Spain. Bulk rock compositions of hand-picked juvenile fragments indicate derivation of the FIN magma from a garnet-bearing mantle source, which has subsequently been overprinted in bulk rock samples by incorporation of a combination of spinel-bearing peridotites and upper-crustal lithics (i.e. quartzites and slates). The dominating phenocryst assemblage with clinopyroxene, olivine, amphibole and phlogopite points to the classification of the juvenile magma as being olivine melilititic in composition. Ascent through the lithosphere was rapid as indicated by the calculations of settling rates of mantle peridotites (~0.8 m $ s^{−1} $). The original magma fragmentation level in the conduit was probably relatively shallow carrying mainly juvenile pyroclasts (~60 %) intermixed with accidental crustal lithics (~35 %) and mantle xenoliths (<5 %) to the surface. The shapes of individual pyroclasts are sub-rounded to rounded and with highly variable vesicularities (5–45 %). This fact, in combination with abundant fine-grained material in the beginning of the eruption, indicates that both magmatic and phreatomagmatic fragmentation processes may have played important roles in forming the FIN maar. A relatively constant increase in quartzitic fragments from ~35 to <60 % with increasing stratigraphic height in the FIN deposits further indicates that the crater area successively widened during the eruption, which resulted in an increased recycling of quartzitic fragments. This eruption scenario, with the formation of a diatreme at depth, is also consistent with the absence of layers dipping inwards into the crater area. Maar volcanism Diatreme Melilitite Fragmentation Mattsson, Hannes B. aut Enthalten in International journal of earth sciences Springer Berlin Heidelberg, 1999 104(2015), 7 vom: 28. März, Seite 1795-1817 (DE-627)270428879 (DE-600)1477582-7 (DE-576)078189780 1437-3254 nnns volume:104 year:2015 number:7 day:28 month:03 pages:1795-1817 https://doi.org/10.1007/s00531-015-1164-4 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-GEO SSG-OPC-GGO SSG-OPC-GEO GBV_ILN_22 GBV_ILN_24 GBV_ILN_30 GBV_ILN_40 GBV_ILN_183 GBV_ILN_188 GBV_ILN_381 GBV_ILN_600 GBV_ILN_788 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2018 GBV_ILN_2173 GBV_ILN_4028 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4126 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4309 GBV_ILN_4320 AR 104 2015 7 28 03 1795-1817 |
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10.1007/s00531-015-1164-4 doi (DE-627)OLC2070428818 (DE-He213)s00531-015-1164-4-p DE-627 ger DE-627 rakwb eng 550 VZ 550 VZ 13 ssgn Lierenfeld, Matthias Bernhard verfasserin aut Geochemistry and eruptive behaviour of the Finca la Nava maar volcano (Campo de Calatrava, south-central Spain) 2015 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer-Verlag Berlin Heidelberg 2015 Abstract Here we present a detailed investigation into the geochemistry and the excavational/depositional processes involved in the maar-diatreme forming Finca la Nava (FlN) eruption in south-central Spain. Bulk rock compositions of hand-picked juvenile fragments indicate derivation of the FIN magma from a garnet-bearing mantle source, which has subsequently been overprinted in bulk rock samples by incorporation of a combination of spinel-bearing peridotites and upper-crustal lithics (i.e. quartzites and slates). The dominating phenocryst assemblage with clinopyroxene, olivine, amphibole and phlogopite points to the classification of the juvenile magma as being olivine melilititic in composition. Ascent through the lithosphere was rapid as indicated by the calculations of settling rates of mantle peridotites (~0.8 m $ s^{−1} $). The original magma fragmentation level in the conduit was probably relatively shallow carrying mainly juvenile pyroclasts (~60 %) intermixed with accidental crustal lithics (~35 %) and mantle xenoliths (<5 %) to the surface. The shapes of individual pyroclasts are sub-rounded to rounded and with highly variable vesicularities (5–45 %). This fact, in combination with abundant fine-grained material in the beginning of the eruption, indicates that both magmatic and phreatomagmatic fragmentation processes may have played important roles in forming the FIN maar. A relatively constant increase in quartzitic fragments from ~35 to <60 % with increasing stratigraphic height in the FIN deposits further indicates that the crater area successively widened during the eruption, which resulted in an increased recycling of quartzitic fragments. This eruption scenario, with the formation of a diatreme at depth, is also consistent with the absence of layers dipping inwards into the crater area. Maar volcanism Diatreme Melilitite Fragmentation Mattsson, Hannes B. aut Enthalten in International journal of earth sciences Springer Berlin Heidelberg, 1999 104(2015), 7 vom: 28. März, Seite 1795-1817 (DE-627)270428879 (DE-600)1477582-7 (DE-576)078189780 1437-3254 nnns volume:104 year:2015 number:7 day:28 month:03 pages:1795-1817 https://doi.org/10.1007/s00531-015-1164-4 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-GEO SSG-OPC-GGO SSG-OPC-GEO GBV_ILN_22 GBV_ILN_24 GBV_ILN_30 GBV_ILN_40 GBV_ILN_183 GBV_ILN_188 GBV_ILN_381 GBV_ILN_600 GBV_ILN_788 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2018 GBV_ILN_2173 GBV_ILN_4028 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4126 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4309 GBV_ILN_4320 AR 104 2015 7 28 03 1795-1817 |
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10.1007/s00531-015-1164-4 doi (DE-627)OLC2070428818 (DE-He213)s00531-015-1164-4-p DE-627 ger DE-627 rakwb eng 550 VZ 550 VZ 13 ssgn Lierenfeld, Matthias Bernhard verfasserin aut Geochemistry and eruptive behaviour of the Finca la Nava maar volcano (Campo de Calatrava, south-central Spain) 2015 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer-Verlag Berlin Heidelberg 2015 Abstract Here we present a detailed investigation into the geochemistry and the excavational/depositional processes involved in the maar-diatreme forming Finca la Nava (FlN) eruption in south-central Spain. Bulk rock compositions of hand-picked juvenile fragments indicate derivation of the FIN magma from a garnet-bearing mantle source, which has subsequently been overprinted in bulk rock samples by incorporation of a combination of spinel-bearing peridotites and upper-crustal lithics (i.e. quartzites and slates). The dominating phenocryst assemblage with clinopyroxene, olivine, amphibole and phlogopite points to the classification of the juvenile magma as being olivine melilititic in composition. Ascent through the lithosphere was rapid as indicated by the calculations of settling rates of mantle peridotites (~0.8 m $ s^{−1} $). The original magma fragmentation level in the conduit was probably relatively shallow carrying mainly juvenile pyroclasts (~60 %) intermixed with accidental crustal lithics (~35 %) and mantle xenoliths (<5 %) to the surface. The shapes of individual pyroclasts are sub-rounded to rounded and with highly variable vesicularities (5–45 %). This fact, in combination with abundant fine-grained material in the beginning of the eruption, indicates that both magmatic and phreatomagmatic fragmentation processes may have played important roles in forming the FIN maar. A relatively constant increase in quartzitic fragments from ~35 to <60 % with increasing stratigraphic height in the FIN deposits further indicates that the crater area successively widened during the eruption, which resulted in an increased recycling of quartzitic fragments. This eruption scenario, with the formation of a diatreme at depth, is also consistent with the absence of layers dipping inwards into the crater area. Maar volcanism Diatreme Melilitite Fragmentation Mattsson, Hannes B. aut Enthalten in International journal of earth sciences Springer Berlin Heidelberg, 1999 104(2015), 7 vom: 28. März, Seite 1795-1817 (DE-627)270428879 (DE-600)1477582-7 (DE-576)078189780 1437-3254 nnns volume:104 year:2015 number:7 day:28 month:03 pages:1795-1817 https://doi.org/10.1007/s00531-015-1164-4 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-GEO SSG-OPC-GGO SSG-OPC-GEO GBV_ILN_22 GBV_ILN_24 GBV_ILN_30 GBV_ILN_40 GBV_ILN_183 GBV_ILN_188 GBV_ILN_381 GBV_ILN_600 GBV_ILN_788 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2018 GBV_ILN_2173 GBV_ILN_4028 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4126 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4309 GBV_ILN_4320 AR 104 2015 7 28 03 1795-1817 |
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10.1007/s00531-015-1164-4 doi (DE-627)OLC2070428818 (DE-He213)s00531-015-1164-4-p DE-627 ger DE-627 rakwb eng 550 VZ 550 VZ 13 ssgn Lierenfeld, Matthias Bernhard verfasserin aut Geochemistry and eruptive behaviour of the Finca la Nava maar volcano (Campo de Calatrava, south-central Spain) 2015 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer-Verlag Berlin Heidelberg 2015 Abstract Here we present a detailed investigation into the geochemistry and the excavational/depositional processes involved in the maar-diatreme forming Finca la Nava (FlN) eruption in south-central Spain. Bulk rock compositions of hand-picked juvenile fragments indicate derivation of the FIN magma from a garnet-bearing mantle source, which has subsequently been overprinted in bulk rock samples by incorporation of a combination of spinel-bearing peridotites and upper-crustal lithics (i.e. quartzites and slates). The dominating phenocryst assemblage with clinopyroxene, olivine, amphibole and phlogopite points to the classification of the juvenile magma as being olivine melilititic in composition. Ascent through the lithosphere was rapid as indicated by the calculations of settling rates of mantle peridotites (~0.8 m $ s^{−1} $). The original magma fragmentation level in the conduit was probably relatively shallow carrying mainly juvenile pyroclasts (~60 %) intermixed with accidental crustal lithics (~35 %) and mantle xenoliths (<5 %) to the surface. The shapes of individual pyroclasts are sub-rounded to rounded and with highly variable vesicularities (5–45 %). This fact, in combination with abundant fine-grained material in the beginning of the eruption, indicates that both magmatic and phreatomagmatic fragmentation processes may have played important roles in forming the FIN maar. A relatively constant increase in quartzitic fragments from ~35 to <60 % with increasing stratigraphic height in the FIN deposits further indicates that the crater area successively widened during the eruption, which resulted in an increased recycling of quartzitic fragments. This eruption scenario, with the formation of a diatreme at depth, is also consistent with the absence of layers dipping inwards into the crater area. Maar volcanism Diatreme Melilitite Fragmentation Mattsson, Hannes B. aut Enthalten in International journal of earth sciences Springer Berlin Heidelberg, 1999 104(2015), 7 vom: 28. März, Seite 1795-1817 (DE-627)270428879 (DE-600)1477582-7 (DE-576)078189780 1437-3254 nnns volume:104 year:2015 number:7 day:28 month:03 pages:1795-1817 https://doi.org/10.1007/s00531-015-1164-4 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-GEO SSG-OPC-GGO SSG-OPC-GEO GBV_ILN_22 GBV_ILN_24 GBV_ILN_30 GBV_ILN_40 GBV_ILN_183 GBV_ILN_188 GBV_ILN_381 GBV_ILN_600 GBV_ILN_788 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2018 GBV_ILN_2173 GBV_ILN_4028 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4126 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4309 GBV_ILN_4320 AR 104 2015 7 28 03 1795-1817 |
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10.1007/s00531-015-1164-4 doi (DE-627)OLC2070428818 (DE-He213)s00531-015-1164-4-p DE-627 ger DE-627 rakwb eng 550 VZ 550 VZ 13 ssgn Lierenfeld, Matthias Bernhard verfasserin aut Geochemistry and eruptive behaviour of the Finca la Nava maar volcano (Campo de Calatrava, south-central Spain) 2015 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer-Verlag Berlin Heidelberg 2015 Abstract Here we present a detailed investigation into the geochemistry and the excavational/depositional processes involved in the maar-diatreme forming Finca la Nava (FlN) eruption in south-central Spain. Bulk rock compositions of hand-picked juvenile fragments indicate derivation of the FIN magma from a garnet-bearing mantle source, which has subsequently been overprinted in bulk rock samples by incorporation of a combination of spinel-bearing peridotites and upper-crustal lithics (i.e. quartzites and slates). The dominating phenocryst assemblage with clinopyroxene, olivine, amphibole and phlogopite points to the classification of the juvenile magma as being olivine melilititic in composition. Ascent through the lithosphere was rapid as indicated by the calculations of settling rates of mantle peridotites (~0.8 m $ s^{−1} $). The original magma fragmentation level in the conduit was probably relatively shallow carrying mainly juvenile pyroclasts (~60 %) intermixed with accidental crustal lithics (~35 %) and mantle xenoliths (<5 %) to the surface. The shapes of individual pyroclasts are sub-rounded to rounded and with highly variable vesicularities (5–45 %). This fact, in combination with abundant fine-grained material in the beginning of the eruption, indicates that both magmatic and phreatomagmatic fragmentation processes may have played important roles in forming the FIN maar. A relatively constant increase in quartzitic fragments from ~35 to <60 % with increasing stratigraphic height in the FIN deposits further indicates that the crater area successively widened during the eruption, which resulted in an increased recycling of quartzitic fragments. This eruption scenario, with the formation of a diatreme at depth, is also consistent with the absence of layers dipping inwards into the crater area. Maar volcanism Diatreme Melilitite Fragmentation Mattsson, Hannes B. aut Enthalten in International journal of earth sciences Springer Berlin Heidelberg, 1999 104(2015), 7 vom: 28. März, Seite 1795-1817 (DE-627)270428879 (DE-600)1477582-7 (DE-576)078189780 1437-3254 nnns volume:104 year:2015 number:7 day:28 month:03 pages:1795-1817 https://doi.org/10.1007/s00531-015-1164-4 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-GEO SSG-OPC-GGO SSG-OPC-GEO GBV_ILN_22 GBV_ILN_24 GBV_ILN_30 GBV_ILN_40 GBV_ILN_183 GBV_ILN_188 GBV_ILN_381 GBV_ILN_600 GBV_ILN_788 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2018 GBV_ILN_2173 GBV_ILN_4028 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4126 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4309 GBV_ILN_4320 AR 104 2015 7 28 03 1795-1817 |
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Lierenfeld, Matthias Bernhard ddc 550 ssgn 13 misc Maar volcanism misc Diatreme misc Melilitite misc Fragmentation Geochemistry and eruptive behaviour of the Finca la Nava maar volcano (Campo de Calatrava, south-central Spain) |
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geochemistry and eruptive behaviour of the finca la nava maar volcano (campo de calatrava, south-central spain) |
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Geochemistry and eruptive behaviour of the Finca la Nava maar volcano (Campo de Calatrava, south-central Spain) |
abstract |
Abstract Here we present a detailed investigation into the geochemistry and the excavational/depositional processes involved in the maar-diatreme forming Finca la Nava (FlN) eruption in south-central Spain. Bulk rock compositions of hand-picked juvenile fragments indicate derivation of the FIN magma from a garnet-bearing mantle source, which has subsequently been overprinted in bulk rock samples by incorporation of a combination of spinel-bearing peridotites and upper-crustal lithics (i.e. quartzites and slates). The dominating phenocryst assemblage with clinopyroxene, olivine, amphibole and phlogopite points to the classification of the juvenile magma as being olivine melilititic in composition. Ascent through the lithosphere was rapid as indicated by the calculations of settling rates of mantle peridotites (~0.8 m $ s^{−1} $). The original magma fragmentation level in the conduit was probably relatively shallow carrying mainly juvenile pyroclasts (~60 %) intermixed with accidental crustal lithics (~35 %) and mantle xenoliths (<5 %) to the surface. The shapes of individual pyroclasts are sub-rounded to rounded and with highly variable vesicularities (5–45 %). This fact, in combination with abundant fine-grained material in the beginning of the eruption, indicates that both magmatic and phreatomagmatic fragmentation processes may have played important roles in forming the FIN maar. A relatively constant increase in quartzitic fragments from ~35 to <60 % with increasing stratigraphic height in the FIN deposits further indicates that the crater area successively widened during the eruption, which resulted in an increased recycling of quartzitic fragments. This eruption scenario, with the formation of a diatreme at depth, is also consistent with the absence of layers dipping inwards into the crater area. © Springer-Verlag Berlin Heidelberg 2015 |
abstractGer |
Abstract Here we present a detailed investigation into the geochemistry and the excavational/depositional processes involved in the maar-diatreme forming Finca la Nava (FlN) eruption in south-central Spain. Bulk rock compositions of hand-picked juvenile fragments indicate derivation of the FIN magma from a garnet-bearing mantle source, which has subsequently been overprinted in bulk rock samples by incorporation of a combination of spinel-bearing peridotites and upper-crustal lithics (i.e. quartzites and slates). The dominating phenocryst assemblage with clinopyroxene, olivine, amphibole and phlogopite points to the classification of the juvenile magma as being olivine melilititic in composition. Ascent through the lithosphere was rapid as indicated by the calculations of settling rates of mantle peridotites (~0.8 m $ s^{−1} $). The original magma fragmentation level in the conduit was probably relatively shallow carrying mainly juvenile pyroclasts (~60 %) intermixed with accidental crustal lithics (~35 %) and mantle xenoliths (<5 %) to the surface. The shapes of individual pyroclasts are sub-rounded to rounded and with highly variable vesicularities (5–45 %). This fact, in combination with abundant fine-grained material in the beginning of the eruption, indicates that both magmatic and phreatomagmatic fragmentation processes may have played important roles in forming the FIN maar. A relatively constant increase in quartzitic fragments from ~35 to <60 % with increasing stratigraphic height in the FIN deposits further indicates that the crater area successively widened during the eruption, which resulted in an increased recycling of quartzitic fragments. This eruption scenario, with the formation of a diatreme at depth, is also consistent with the absence of layers dipping inwards into the crater area. © Springer-Verlag Berlin Heidelberg 2015 |
abstract_unstemmed |
Abstract Here we present a detailed investigation into the geochemistry and the excavational/depositional processes involved in the maar-diatreme forming Finca la Nava (FlN) eruption in south-central Spain. Bulk rock compositions of hand-picked juvenile fragments indicate derivation of the FIN magma from a garnet-bearing mantle source, which has subsequently been overprinted in bulk rock samples by incorporation of a combination of spinel-bearing peridotites and upper-crustal lithics (i.e. quartzites and slates). The dominating phenocryst assemblage with clinopyroxene, olivine, amphibole and phlogopite points to the classification of the juvenile magma as being olivine melilititic in composition. Ascent through the lithosphere was rapid as indicated by the calculations of settling rates of mantle peridotites (~0.8 m $ s^{−1} $). The original magma fragmentation level in the conduit was probably relatively shallow carrying mainly juvenile pyroclasts (~60 %) intermixed with accidental crustal lithics (~35 %) and mantle xenoliths (<5 %) to the surface. The shapes of individual pyroclasts are sub-rounded to rounded and with highly variable vesicularities (5–45 %). This fact, in combination with abundant fine-grained material in the beginning of the eruption, indicates that both magmatic and phreatomagmatic fragmentation processes may have played important roles in forming the FIN maar. A relatively constant increase in quartzitic fragments from ~35 to <60 % with increasing stratigraphic height in the FIN deposits further indicates that the crater area successively widened during the eruption, which resulted in an increased recycling of quartzitic fragments. This eruption scenario, with the formation of a diatreme at depth, is also consistent with the absence of layers dipping inwards into the crater area. © Springer-Verlag Berlin Heidelberg 2015 |
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