A mineral-scale investigation of the origin of the 2.6 Ma Füzes-tó basalt, Bakony-Balaton Highland Volcanic Field (Pannonian Basin, Hungary)

Éva Jankovics, S. Harangi, Theodoros Ntaflos

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

The alkaline basalt of the Füzes-tó scoria cone is the youngest volcanic product of the Bakony-Balaton Highland Volcanic Field. The bombs and massive lava fragments are rich in various crystals, such as mantle-derived xenocrysts (olivine, orthopyroxene, clinopyroxene, spinel), high-pressure mineral phases (clinopyroxene) and phenocrysts (olivine, clinopyroxene). Peridotite xenoliths are also common. Ratios of incompatible trace elements (Zr/Nb and Nb/Y) suggest that the primary magma was formed in the transitional spinel-garnet stability field, at the uppermost part of the asthenosphere. Magmatic spinel inclusions with low-Cr# (22-35) in olivine phenocrysts can reflect a fertile peridotite source. The olivine, orthopyroxene, colourless clinopyroxene and spinel xenocrysts are derived from different depths of the subcontinental lithospheric mantle and their compositions resemble the mineral phases of the ultramafic xenoliths found in this region. The rarer green clinopyroxene cores of clinopyroxene phenocrysts could represent high-pressure products of crystallization from a more evolved melt than the host magma, or they could be derived from mafic lower crustal rocks. Crystallization of the basaltic magma resulted in olivine and clinopyroxene phenocrysts. Their compositions reflect polybaric crystallization with a final, strongly oxidized stage. The Füzes-tó basalt does not represent a certain magma composition, but a mixture of mineral phases having various origin and mantle-derived basaltic melt.

Original languageEnglish
Pages (from-to)97-124
Number of pages28
JournalCentral European Geology
Volume52
Issue number2
DOIs
Publication statusPublished - Jun 1 2009

Fingerprint

clinopyroxene
basalt
olivine
spinel
mineral
basin
magma
crystallization
mantle
orthopyroxene
peridotite
melt
asthenosphere
lava
garnet
trace element
crystal
rock

Keywords

  • alkaline basalt
  • lithospheric mantle
  • peridotite
  • scoria cone
  • xenocryst

ASJC Scopus subject areas

  • Geology

Cite this

A mineral-scale investigation of the origin of the 2.6 Ma Füzes-tó basalt, Bakony-Balaton Highland Volcanic Field (Pannonian Basin, Hungary). / Jankovics, Éva; Harangi, S.; Ntaflos, Theodoros.

In: Central European Geology, Vol. 52, No. 2, 01.06.2009, p. 97-124.

Research output: Contribution to journalArticle

@article{841f4a38fa6f4d248ff03dcfd76611eb,
title = "A mineral-scale investigation of the origin of the 2.6 Ma F{\"u}zes-t{\'o} basalt, Bakony-Balaton Highland Volcanic Field (Pannonian Basin, Hungary)",
abstract = "The alkaline basalt of the F{\"u}zes-t{\'o} scoria cone is the youngest volcanic product of the Bakony-Balaton Highland Volcanic Field. The bombs and massive lava fragments are rich in various crystals, such as mantle-derived xenocrysts (olivine, orthopyroxene, clinopyroxene, spinel), high-pressure mineral phases (clinopyroxene) and phenocrysts (olivine, clinopyroxene). Peridotite xenoliths are also common. Ratios of incompatible trace elements (Zr/Nb and Nb/Y) suggest that the primary magma was formed in the transitional spinel-garnet stability field, at the uppermost part of the asthenosphere. Magmatic spinel inclusions with low-Cr# (22-35) in olivine phenocrysts can reflect a fertile peridotite source. The olivine, orthopyroxene, colourless clinopyroxene and spinel xenocrysts are derived from different depths of the subcontinental lithospheric mantle and their compositions resemble the mineral phases of the ultramafic xenoliths found in this region. The rarer green clinopyroxene cores of clinopyroxene phenocrysts could represent high-pressure products of crystallization from a more evolved melt than the host magma, or they could be derived from mafic lower crustal rocks. Crystallization of the basaltic magma resulted in olivine and clinopyroxene phenocrysts. Their compositions reflect polybaric crystallization with a final, strongly oxidized stage. The F{\"u}zes-t{\'o} basalt does not represent a certain magma composition, but a mixture of mineral phases having various origin and mantle-derived basaltic melt.",
keywords = "alkaline basalt, lithospheric mantle, peridotite, scoria cone, xenocryst",
author = "{\'E}va Jankovics and S. Harangi and Theodoros Ntaflos",
year = "2009",
month = "6",
day = "1",
doi = "10.1556/CEuGeol.52.2009.2.1",
language = "English",
volume = "52",
pages = "97--124",
journal = "Central European Geology",
issn = "1788-2281",
publisher = "Akademiai Kiado",
number = "2",

}

TY - JOUR

T1 - A mineral-scale investigation of the origin of the 2.6 Ma Füzes-tó basalt, Bakony-Balaton Highland Volcanic Field (Pannonian Basin, Hungary)

AU - Jankovics, Éva

AU - Harangi, S.

AU - Ntaflos, Theodoros

PY - 2009/6/1

Y1 - 2009/6/1

N2 - The alkaline basalt of the Füzes-tó scoria cone is the youngest volcanic product of the Bakony-Balaton Highland Volcanic Field. The bombs and massive lava fragments are rich in various crystals, such as mantle-derived xenocrysts (olivine, orthopyroxene, clinopyroxene, spinel), high-pressure mineral phases (clinopyroxene) and phenocrysts (olivine, clinopyroxene). Peridotite xenoliths are also common. Ratios of incompatible trace elements (Zr/Nb and Nb/Y) suggest that the primary magma was formed in the transitional spinel-garnet stability field, at the uppermost part of the asthenosphere. Magmatic spinel inclusions with low-Cr# (22-35) in olivine phenocrysts can reflect a fertile peridotite source. The olivine, orthopyroxene, colourless clinopyroxene and spinel xenocrysts are derived from different depths of the subcontinental lithospheric mantle and their compositions resemble the mineral phases of the ultramafic xenoliths found in this region. The rarer green clinopyroxene cores of clinopyroxene phenocrysts could represent high-pressure products of crystallization from a more evolved melt than the host magma, or they could be derived from mafic lower crustal rocks. Crystallization of the basaltic magma resulted in olivine and clinopyroxene phenocrysts. Their compositions reflect polybaric crystallization with a final, strongly oxidized stage. The Füzes-tó basalt does not represent a certain magma composition, but a mixture of mineral phases having various origin and mantle-derived basaltic melt.

AB - The alkaline basalt of the Füzes-tó scoria cone is the youngest volcanic product of the Bakony-Balaton Highland Volcanic Field. The bombs and massive lava fragments are rich in various crystals, such as mantle-derived xenocrysts (olivine, orthopyroxene, clinopyroxene, spinel), high-pressure mineral phases (clinopyroxene) and phenocrysts (olivine, clinopyroxene). Peridotite xenoliths are also common. Ratios of incompatible trace elements (Zr/Nb and Nb/Y) suggest that the primary magma was formed in the transitional spinel-garnet stability field, at the uppermost part of the asthenosphere. Magmatic spinel inclusions with low-Cr# (22-35) in olivine phenocrysts can reflect a fertile peridotite source. The olivine, orthopyroxene, colourless clinopyroxene and spinel xenocrysts are derived from different depths of the subcontinental lithospheric mantle and their compositions resemble the mineral phases of the ultramafic xenoliths found in this region. The rarer green clinopyroxene cores of clinopyroxene phenocrysts could represent high-pressure products of crystallization from a more evolved melt than the host magma, or they could be derived from mafic lower crustal rocks. Crystallization of the basaltic magma resulted in olivine and clinopyroxene phenocrysts. Their compositions reflect polybaric crystallization with a final, strongly oxidized stage. The Füzes-tó basalt does not represent a certain magma composition, but a mixture of mineral phases having various origin and mantle-derived basaltic melt.

KW - alkaline basalt

KW - lithospheric mantle

KW - peridotite

KW - scoria cone

KW - xenocryst

UR - http://www.scopus.com/inward/record.url?scp=77955690440&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=77955690440&partnerID=8YFLogxK

U2 - 10.1556/CEuGeol.52.2009.2.1

DO - 10.1556/CEuGeol.52.2009.2.1

M3 - Article

VL - 52

SP - 97

EP - 124

JO - Central European Geology

JF - Central European Geology

SN - 1788-2281

IS - 2

ER -