Melt-rock interaction in the lower crust based on silicate melt inclusions in mafic garnet granulite xenoliths, Bakony–Balaton Highland

Major and trace element composition of silicate melt inclusions (SMI) and their rock-forming minerals were studied in mafic garnet granulite xenoliths from the Bakony–Balaton Highland Volcanic Field (Western-Hungary). Primary SMIs occur in clinopyroxene and plagioclase in the plagioclase-rich domains of mafic garnet granulites and in ilmenite in the vicinity of these domains in the wall rock. Based on major and trace elements, we demonstrated that the SMIs have no connection with the xenolith-hosting alkaline basalt as they have rhyodacitic composition with a distinct REE pattern, negative Sr anomaly, and HFSE depletion. The trace element characteristics suggest that the clinopyroxene hosted SMIs are the closest representation of the original melt percolated in the lower crust. In contrast, the plagioclase and ilmenite hosted SMIs are products of interaction between the silicic melt and the wall rock garnet granulite. A further product of this interaction is the clinopyroxene–ilmenite±plagioclase symplectite. Textural observations and mass balance calculations reveal that the reaction between titanite and the silicate melt led to the formation of these assemblages. We propose that a tectonic mélange of metapelites and (MOR-related) metabasalts partially melted at 0.3–0.5 GPa to form a dacitic–rhyodacitic melt leaving behind a garnet-free, plagioclase+clinopyroxene+orthopyroxene+ilmenite residuum. The composition of the SMIs (both major and trace elements) is similar to those from the middle Miocene calc-alkaline magmas, widely known from the northern Pannonian Basin (Börzsöny and Visegrád Mts., Cserhát and Mátra volcanic areas and Central Slovakian VF), but the SMIs are probably the result of a later, local process. The study of these SMIs also highlights how crustal contamination changes magma compositions during asthenospheric Miocene ascent.

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Fluid-Rock Interaction in the Lower Crust Based on Silicate Melt Inclusions in Garnet Granulite Xenoliths

10.46427/gold2020.1910 ◽

2020 ◽

Author(s):

Bianca Németh ◽

Kálmán Török ◽

Eniko Bali ◽

Zoltan Zajacz ◽

Csaba Szabó

Keyword(s):

Lower Crust ◽

Melt Inclusions ◽

Silicate Melt ◽

Rock Interaction ◽

Garnet Granulite ◽

Granulite Xenoliths

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Supplemental Material: Forearc magmatic evolution during subduction initiation: Insights from an Early Cretaceous Tibetan ophiolite and comparison with the Izu-Bonin-Mariana forearc

10.1130/gsab.s.12670091.v2 ◽

2020 ◽

Author(s):

Jin-Gen Dai ◽

et al.

Keyword(s):

Trace Elements ◽

Trace Element ◽

Early Cretaceous ◽

Analytical Methods ◽

Major And Trace Elements ◽

Magmatic Evolution ◽

Isotopic Data ◽

Subduction Initiation ◽

Mariana Forearc

Detailed analytical methods in Text S1, major- and trace-element compositions of clinopyroxene, orthopyroxene, and amphibole, whole-rock major and trace elements, Sr-Nd isotopic data, and zircon U-Pb and Lu-Hf data in Tables S1–S7; Figures S1–S5.

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Melt-wall rock interaction in the mantle shown by silicate melt inclusions in peridotite xenoliths from the central Pannonian Basin (western Hungary)

Island Arc ◽

10.1111/j.1440-1738.2009.00672.x ◽

2009 ◽

Vol 18 (2) ◽

pp. 375-400 ◽

Cited By ~ 11

Author(s):

Csaba Szabó ◽

Károly Hidas ◽

Enikő Bali ◽

Zoltán Zajacz ◽

István Kovács ◽

...

Keyword(s):

Melt Inclusions ◽

Pannonian Basin ◽

Wall Rock ◽

Silicate Melt ◽

Rock Interaction ◽

Peridotite Xenoliths

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Natural Enrichment of Trace Elements in Surface Horizons of Calcareous Soils (La Mancha, Spain)

Journal of Chemistry ◽

10.1155/2015/606837 ◽

2015 ◽

Vol 2015 ◽

pp. 1-10 ◽

Cited By ~ 1

Author(s):

Sandra Bravo Martín-Consuegra ◽

Jose A. Amorós Ortíz-Villajos ◽

Caridad Pérez-de-los-Reyes ◽

Francisco J. García Navarro ◽

Rolando Ruedas Luna ◽

...

Keyword(s):

Trace Elements ◽

Trace Element ◽

Calcareous Soils ◽

Major And Trace Elements ◽

Soil Profiles ◽

Geochemical Characterization ◽

Average Value ◽

La Mancha ◽

Original Rock

The study of five soil profiles developed on carbonatic sediments of Tertiary Miocene origin has been carried out. The topography of the area was basically flat and the traditional uses of the soils are the cultivation of dry cereals and grapevine. The geochemical characterization of the aforementioned profiles involves a study of the contents of major and trace elements among other pedologic aspects (texture, pH, organic matter, etc.). The results of this study also indicate a superficial enrichment of trace elements due to the leaching of Ca and moderate biological and anthropic activity. We can consider strontium, Sr, as the trace element that characterizes these limy soils (435 mg/kg average content in total soil and 708 mg/kg in the original rock). These contents are similar to the average value in Castilla-La Mancha of 380 mg/kg and are higher than the average in world soils of about 200 mg/kg. High levels of dangerous or pollutant elements (Cd, Hg, Pb, Cu, Zn, or Ni) were not detected. The majority of trace element anomalies are related to calcareous material and the leaching of calcium carbonate (Ca), while the influence of the anthropogenic factor is secondary. Soil quality does not indicate toxicity although surficial enrichment suggests a weak threat from consuming crops.

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The characteristic of acid melts which formed tephra of pleistocene-holocene eruptions of Ichinsky Volcano, Kamchatka (Results of melt inclusions study)

Геохимия ◽

10.31857/s0016-7525643237-262 ◽

2019 ◽

Vol 64 (3) ◽

pp. 237-262

Author(s):

M. L. Tolstykh ◽

M. M. Pevzner ◽

V. B. Naumov ◽

A. D. Babansky

Keyword(s):

Trace Elements ◽

Melt Inclusions ◽

Magma Mixing ◽

Major And Trace Elements ◽

Magmatic System ◽

Acid Melts

This paper presents the results of a study of melt inclusions in plagioclase, amphibole and pyroxene from Ichinsky volcano’s tephras of different age. Two types of melts have been identified, distinguished by different concentrations of potassium (K2O). Major and trace elements’ composition of these melts indicates that magma mixing was the dominating process in the Ichinsky magmatic system.

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Supplemental Material: Forearc magmatic evolution during subduction initiation: Insights from an Early Cretaceous Tibetan ophiolite and comparison with the Izu-Bonin-Mariana forearc

10.1130/gsab.s.12670091.v1 ◽

2020 ◽

Author(s):

Jin-Gen Dai ◽

et al.

Keyword(s):

Trace Elements ◽

Trace Element ◽

Early Cretaceous ◽

Analytical Methods ◽

Major And Trace Elements ◽

Magmatic Evolution ◽

Isotopic Data ◽

Subduction Initiation ◽

Mariana Forearc

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Passive degassing at Nyiragongo (D.R. Congo) and Etna (Italy) volcanoes

Annals of Geophysics ◽

10.4401/ag-6637 ◽

2015 ◽

Vol 57 ◽

Author(s):

Sergio Calabrese ◽

Sarah Scaglione ◽

Silvia Milazzo ◽

Walter D'Alessandro ◽

Nicole Bobrowski ◽

...

Keyword(s):

Trace Elements ◽

Trace Element ◽

Major And Trace Elements ◽

Trace Element Composition ◽

Bulk Deposition ◽

Volcanic Plume ◽

Strong Impact ◽

Volcanic Emissions ◽

Endemic Plant ◽

The Impact

<p>Volcanoes are well known as an impressive large natural source of trace elements into the troposphere. Etna (Italy) and Nyiragongo (D.R. Congo) are two stratovolcanoes located in different geological settings, both characterized by persistent passive degassing from their summit craters. Here, we present some results on trace element composition in volcanic plume emissions, atmospheric bulk deposition (rainwater) and their uptake by the surrounding vegetation, with the aim to compare and identify differences and similarities between these two volcanoes. Volcanic emissions were sampled by using active filter-pack for acid gases (sulfur and halogens) and specific teflon filters for particulates (major and trace elements). The impact of the volcanogenic deposition in the surrounding of the crater rims was investigated by using different sampling techniques: bulk rain collectors gauges were used to collect atmospheric bulk deposition, and biomonitoring technique was carried out to collect gases and particulates by using endemic plant species. The estimates of the trace element fluxes confirm that Etna and Nyiragongo are large sources of metals into the atmosphere, especially considering their persistent state of passive degassing. The large amount of emitted trace elements has a strong impact on the close surrounding of both volcanoes. This is clearly reflected by in the chemical composition of rainwater collected at the summit areas both for Etna and Nyiragongo. Moreover, the biomonitoring results highlight that bioaccumulation of trace elements is extremely high in the proximity of the crater rim and decreases with the distance from the active craters.</p>

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XVIII.—The Geochemistry of the Charnockite Series of Madras, India

Transactions of the Royal Society of Edinburgh ◽

10.1017/s0080456800009431 ◽

1955 ◽

Vol 62 (3) ◽

pp. 725-768 ◽

Cited By ~ 135

Author(s):

R. A. Howie

Keyword(s):

Trace Elements ◽

Solid State ◽

Trace Element ◽

Major And Trace Elements ◽

Rock Series ◽

Peninsular India ◽

Smooth Curves ◽

Type Area ◽

Classical Work ◽

The World

SynopsisSince the classical work of Sir Thomas Holland at the beginning of this century on the charnockite series in Peninsular India there have appeared numerous papers describing rocks from all over the world which have been claimed to belong to this series. The rocks from the type area around Madras have now been re-examined, with particular reference to their chemistry and chemical mineralogy, to provide further evidence for their mode of origin.Following petrographic descriptions, fifteen new analyses of these rocks are presented together with trace element determinations, and these are shown to produce smooth curves on a variation diagram. For several rocks all the constituent minerals have been analysed, and it has thus been possible to discuss the mineralogical location of the various major and trace elements in these rocks. Trace element determinations are presented for the 43 minerals analysed together with those for a further 35 minerals not chemically analysed, and their variation within the mineral species is discussed.The possible modes of origin of these rocks are considered, and from the evidence obtained they are held to represent a plutonic igneous rock series which has undergone recrystallization in the solid state on being subjected to plutonic metamorphism.

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Determination of Sulfur, Ash, and trace Element Content of Coal, Coke, and Fly Using Multielement Tube-Excied X-ray Fluorescence Analsis

Advances in X-ray Analysis ◽

10.1154/s0376030800012039 ◽

1976 ◽

Vol 20 ◽

pp. 431-436

Author(s):

J. A. Cooper ◽

B. D. Wheeler ◽

G. J. Wolfe ◽

D. M. Bartell ◽

D. B. Schlafke

Keyword(s):

Trace Elements ◽

Fly Ash ◽

Trace Element ◽

Trace Element Content ◽

Fluorescence Analysis ◽

Major And Trace Elements ◽

Average Concentration ◽

Ash Content ◽

X Ray

A procedure using tube excited energy dispersive x-ray fluorescence analysis with interelement corrections has been developed for multielement analysis of major and trace elements and ash content of coal, coke, and fly ash. The procedure uses pressed pellets and an exponential correction for interelement effects. The average deviations ranged from about 0.0003% for V at an average concentration of about .003% to 0.1% for S at an average concentration of 4%. About 25 elements were measured and 100 second minimum detectable concentrations ranged from about one part per million for elements near arsenic to about one tenth of one percent for sodium.

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