Glassy orthopyroxene granodiorites of the Pannonian Basin: tracers of ultra-high-temperature deep-crustal anatexis triggered by Tertiary basaltic volcanism

Huraiová, Monika; Dubessy, Jean; Konečný, Petr; Simon, Klaus; Kráĺ, Ján; Zieliński, Grzegorz; Lipka, J.; Hurai, Vratislav

doi:10.1007/s00410-004-0625-8

Cited by 17 publications

(9 citation statements)

References 58 publications

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“…Evidences for basaltic magma underplating, fractionation within mantle and crustal reservoirs, and generation of anorogenic magmas have been obtained in this area from the study of clinopyroxene and amphibole-bearing mafic cumulates (e.g. Huraiová et al 1996;Zajacz and Szabó 2003;Kovács et al 2004;Hurai et al 2007;Zajacz et al 2007) as well as syenites and A1-type intra-plate granites (Huraiová et al 1996(Huraiová et al , 2005(Huraiová et al , 2017a(Huraiová et al , b, 2019Hurai et al 1998Hurai et al , 2010.…”

Section: Geological Settingmentioning

confidence: 99%

Origin and provenance of 2 Ma–2 Ga zircons ejected by phreatomagmatic eruptions of Pliocene basalts in southern Slovakia

Paquette

Huraiová

Nemec

et al. 2019

Int J Earth Sci (Geol Rundsch)

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U-Pb ages of zircons recovered from Pliocene pyroclastic deposits in northern part of the Cenozoic intra-Carpathian back-arc basin (Pannonian Basin) span the interval from Pliocene (2.2 Ma) to Paleoproterozoic (Orosirian-Rhyacian, 1850-2115 Ma). The scattered U-Pb ages reflect eruption ages of the host basaltic volcanic centres, two episodes of post-Eocene magmatic crustal growth, and the possible tectonic affiliation, provenance and age of the subjacent basement or the sedimentary basin detritus sampled by the basaltic magma. The youngest zircons define maximum ages of phreatomagmatic eruptions during the Late Miocene-Pliocene extension. These zircons are distinguished from older zircons by Zr/Hf (40-90) and Th/U ratios (0.5-4.5) as well as super-chondritic εHf(t) values ranging from +7 to +14, indicating mantle-derived parental magmas. The locally increased Th/U ratios (up to 8) accompanied by Zr/Hf >60 are diagnostic of evolved phonolite parental melt. Hence, the youngest zircons can be interpreted as antecrysts, originating from evolved melts cogenetic zircons have been likely scavenged from pyroclastic and ash-fall deposits of the Palaeogene retroarc basin subjacent to the Miocene basin infilling. Sub-chondritic εHf(t) values between-2.5 and-8 in the Eocene-Early Miocene zircons attest their crystallization from subductionrelated felsic-to-intermediate melts containing large amounts of recycled crustal material. Palaeozoic-Proterozoic zircons create a heterogeneous population with variable trace element abundances and εHf(t) values. The determined age clusters are reminiscent of some basement units cropping out recently in Central Western Carpathians. Zircon Hf isotope data indicate recycling of up to 3.4 Ga old mafic crust and also the presence of 2 Ga old juvenile mafic crust. These units had either underlain the northern part of the Pannonian Basin during Pliocene, or had been exposed during the deposition of Miocene clastic sediments. The absence of Mesoproterozoic, Grenvillian zircons (0.9-1.8 Ga) in the pre-Cenozoic population of zircon xenocrysts is provisionally interpreted as indicating the evolution of the zircon source area within the west-African Craton.

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Section: Geological Settingmentioning

confidence: 99%

Origin and provenance of 2 Ma–2 Ga zircons ejected by phreatomagmatic eruptions of Pliocene basalts in southern Slovakia

Paquette

Huraiová

Nemec

et al. 2019

Int J Earth Sci (Geol Rundsch)

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“…The emplacement depth of the reservoir sampled by the Pinciná maar in the Lučenec basin has been estimated from the density of primary CO 2 -rich inclusions, and the approximate temperature of 800-900 • C inferred from zircon morphology. The inferred pressures-from 2.5 to 2.8 kbar for oxidized syenites, and 4.3-5.2 kbar for reduced syenites, including PI-12 and HP-3testify to the magma underplating, stagnation, and differentiation in at least two separated horizons in the depth interval from 10 to 20 km [6]. However, these depth estimates can be biased by the loss of some fluid content from fluid inclusions through decrepitation cracks, and by the lacking independent thermobarometric control from mafic mineral assemblages.…”

Section: Ages and Emplacement Depths Of Sub-volcanic Reservoirsmentioning

confidence: 90%

“…Gabbroic and syenite xenoliths represent gravitational and flotation cumulates, respectively, scavenged from stratified, partly Minerals 2021, 11, 369 2 of 20 solidified magmatic intrusions [5]. Occasional granite fragments range in composition from barren magnesian and calcic orthopyroxene granite (pincinite) to productive, HFSEand REE-rich ferroan calc-alkalic granite [6][7][8]. Despite the diverse compositions, trace elements and radiogenic isotopes define the whole suite of igneous xenoliths as a cogenetic assemblage of an Upper Miocene-Pliocene A 1 -type intra-plate continental magmatism [9].…”

Section: Introductionmentioning

confidence: 99%

REE Minerals as Geochemical Proxies of Late-Tertiary Alkalic Silicate ± Carbonatite Intrusions Beneath Carpathian Back-Arc Basin

2021

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The accessory mineral assemblage (AMA) of igneous cumulate xenoliths in volcanoclastic deposits and lava flows in the Carpathian back-arc basin testifies to the composition of intrusive complexes sampled by Upper Miocene-Pliocene basalt volcanoes. The magmatic reservoir beneath Pinciná maar is composed of gabbro, moderately alkalic to alkali-calcic syenite, and calcic orthopyroxene granite (pincinite). The intrusive complex beneath the wider area around Fiľakovo and Hajnáčka maars contains mafic cumulates, alkalic syenite, carbonatite, and calc-alkalic granite. Both reservoirs originated during the basaltic magma underplating, differentiation, and interaction with the surrounding mantle and crust. The AMA of syenites is characterized by yttrialite-Y, britholite-Y, britholite-Ce, chevkinite-Ce, monazite-Ce, and rhabdophane(?). Baddeleyite and REE-zirconolite are typical of alkalic syenite associated with carbonatite. Pyrochlore, columbite-Mn, and Ca-niobates occur in calc-alkalic granites with strong peralkalic affinity. Nb-rutile, niobian ilmenite, and fergusonite-Y are crystallized from mildly alkalic syenite and calc-alkalic granite. Zircons with increased Hf/Zr and Th/U ratios occur in all felsic-to-intermediate rock-types. If rock fragments are absent in the volcanic ejecta, the composition of the sub-volcanic reservoir can be reconstructed from the specific AMA and zircon xenocrysts–xenolith relics disintegrated during the basaltic magma fragmentation and explosion.

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“…1). The maar near Pincina village is a type locality of large clinopyroxenite, hornblendite and syenite igneous xenoliths (Huraiová et al, 1996(Huraiová et al, , 2005Hurai et al, 1998). Amphibole-rich cumulates have also been recovered from the maar near Hodejov (Hurai et al, 1998), and from a basaltic flow near Mašková (Zajacz and Szabó, 2003).…”

Section: Geological Settingmentioning

confidence: 99%

“…AS well as common mantle peridotite nodules, the Tertiary alkali basalts of the Carpatho-Pannonian region of central Europe contain xenoliths derived from magmatic reservoirs at various depths. The cogenetic igneous rocks comprise clinopyroxenite cumulates (Dietrich and Poultidis, 1985;Embey-Isztin et al, 1990;Huraiová et al, 1996;Hurai et al, 1998;Zajacz and Szabó, 2003), amphibolebearing gabbros, and syenite-anorthoclasites (Hurai et al, 1998;Huraiová et al, 2005), which originated by magmatic differentiation of tholeiitic or alkalic basalt. Xenoliths of 'pincinite' À glassy orthopyroxene granodiorite-tonalite, resembling the charnockite-enderbite rock series À are considered to represent quenched crystalliquid mush extracted from partially molten crust around basaltic magma chambers (Huraiová et al, 2005;Huraiová and Konečný, 2006).…”

Section: Introductionmentioning

confidence: 99%

Mineral-melt-fluid composition of carbonate-bearing cumulate xenoliths in Tertiary alkali basalts of southern Slovakia

et al. 2007

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Two types of carbonatic cumulate xenoliths occur in alkali basalts of the northern part of the Carpatho-Pannonian region, Central Europe. One is dominated by Ca-Fe-Mg carbonates with randomly distributed bisulphide globules (Fe1+xS2, x = 0–0.1), Mg-Al spinel, augite, rhönite, Ni-Co-rich chalcopyrite, and a Fe(Ni,Fe)2S4 phase. The second, carbonatic pyroxenite xenolith type, is composed of diopside, subordinate fluorapatite, interstitial Fe-Mg carbonates, and accessory K-pargasite, F-Al-rich ferroan phlogopite, Mg-Al spinel, albite and K-feldspar. All accessory minerals occur in ultrapotassic dacite-trachydacite glass in primary silicate melt inclusions in diopside, together with calcio-carbonatite and CO2-N2-CO inclusions. Textural evidence is provided for multiphase fluid-melt immiscibility in both xenolith types. The carbonatic pyroxenite type is inferred to have accumulated from differentiated, volatile-rich, ultrapotassic magma derived by a very low-degree partial melting of strongly metasomatized mantle. Mineral indicators point to a genetic link between the carbonatite xenolith with olivine-fractionated, silica-undersaturated alkalic basalt ponded at the mantle-crust boundary.

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Glassy orthopyroxene granodiorites of the Pannonian Basin: tracers of ultra-high-temperature deep-crustal anatexis triggered by Tertiary basaltic volcanism

Cited by 17 publications

References 58 publications

Origin and provenance of 2 Ma–2 Ga zircons ejected by phreatomagmatic eruptions of Pliocene basalts in southern Slovakia

Origin and provenance of 2 Ma–2 Ga zircons ejected by phreatomagmatic eruptions of Pliocene basalts in southern Slovakia

REE Minerals as Geochemical Proxies of Late-Tertiary Alkalic Silicate ± Carbonatite Intrusions Beneath Carpathian Back-Arc Basin

Mineral-melt-fluid composition of carbonate-bearing cumulate xenoliths in Tertiary alkali basalts of southern Slovakia

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