Fluid inclusions in granulite-facies metapelites of the Hercynian ancient lower crust of the Serre, Calabria, Southern Italy

Herms, Petra; Schenk, Volker

doi:10.1007/bf00310469

Cited by 19 publications

(6 citation statements)

References 43 publications

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“…Raman spectroscopy data indicate the presence of molecular water and carbon dioxide in the isolated cavities of cordierite (Figure 3). The obtained data on the presence of water and carbon dioxide in the matrix of cordierite agree with the works of other authors [47,114].…”

Section: Resultssupporting

confidence: 92%

Fluid Components in Cordierite from the Rocks of Epidote-Amphibole Facies of the Muzkol Metamorphic Complex, Tajikistan: Pyrolysis-Free GC-MS Data

2023

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The composition of volatile components of cordierite from the Muzkol metamorphic complex was studied using shock destruction with pyrolysis-free gas chromatography-mass spectrometry (GC-MS) with simultaneous IR and Raman spectroscopy. Applying the GC-MS procedure, the component relative concentrations (rel.%) and composition of different zones of cordierite crystals were determined. It was found that the substantially magnesian cordierite was formed with a predominantly aqueous-carbonic acid fluid (from 57.06 to 67.88 rel.% H2O, from 24.29 to 32.95 rel.% CO2). From the center towards the crystal periphery, the molar fraction of carbon dioxide (CO2/(H2O + CO2)) decreases from 0.36 to 0.26, whereas the alkane/alkene ratio increases from 0.80 to 0.88. At least 11 homologous series of organic compounds among the identified volatile components, in addition to water and carbon dioxide, were determined, including oxygen-free aliphatic and cyclic hydrocarbons (paraffins, olefins, cyclic alkanes and alkenes, arenes, polycyclic aromatic hydrocarbons (PAHs)), as well as oxygen-containing (alcohols, esters, aldehydes, ketones, carboxylic acids) and heterocyclic (furans, dioxanes) organic compounds.

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Section: Resultssupporting

confidence: 92%

Fluid Components in Cordierite from the Rocks of Epidote-Amphibole Facies of the Muzkol Metamorphic Complex, Tajikistan: Pyrolysis-Free GC-MS Data

2023

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“…In general, medium-to high-grade metamorphic rocks, such as those constituting part of the Calabrian basement, contain CO 2 -bearing fluid inclusions (Roedder 1984). The presence of both CO 2 -rich and H 2 O-CO 2 -rich inclusions in the rocks of the Calabrian basement is also confirmed by Herms and Schenk (1992) who found these types of fluid inclusion in metapelites under granulitefacies conditions in the Serre Massif.…”

Section: Origin Of Quartzite Nodulesmentioning

confidence: 51%

Persistent polybaric rests of calc-alkaline magmas at Stromboli volcano, Italy: pressure data from fluid inclusions in restitic quartzite nodules

Vaggelli

Francalanci

Ruggieri

et al. 2003

Bulletin of Volcanology

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A fluid-inclusion study has been performed on quartzite nodules of stromboli volcano hosted by calcalkaline lavas of both the Strombolicchio (200 ka) and Paleostromboli II (60 ka) periods. The nodules are mainly composed of quartz crystals with subordinate plagioclase and K-feldspar. Small interstitial minerals such as plagioclase, K-feldspar, clinopyroxene, biotite, and quartz are also found, together with glass. Muscovite, epidote and zircon occur as accessory minerals. Different quartzite nodules occur: (1) equigranular polygonal granoblastic quartzite nodules forming a polygonal texture with clear triple points; (2) inequigranular polygonal granoblastic quartzite nodules; and (3) break-up nodules with strongly resorbed quartz. These quartzites are restites from partial melting, involving felsic crustal rocks at the magma/wall rock contact. Restitic quartz re-crystallises at variable and generally high temperatures, leading to the formation of quartzites with different textures. Quartz grains contain five types of fluid inclusions distinguished on the basis of both fluid type and textural/phase relationships at room temperature. Type I are two-phase (liquid+vapour) CO 2 -rich fluid inclusions. They are primary and subordinately pseudosecondary in origin and have undergone re-equilibration processes. Type II mono-phase/two-phase (vapour/liquid+vapour) CO 2 -rich fluid inclusions are the most common and, based on their spatial distribution and shape, they can be divided into two subclasses: type IIa and type IIb. Type II inclusions are secondary or pseudosecondary and they are assumed to have formed after decrepitation of type I inclusions and cracking of the host quartz. Type III inclusions are monophase (vapour); they possibly contain CO 2 at very low density and surround the inner rims of quartz grains. Type IV two-phase silicate-melt inclusions contain glass€CO 2 -rich fluid. Some of them are cogenetic with type II inclusions. Finally, type V two-phase (liquid+vapour) aqueous inclusions are both vapour-rich and liquid-rich aqueous inclusions. Microthermometric experiments were performed on both type I and II inclusions. Type I inclusions homogenise to liquid between 20 and 30.5 C. Type IIa inclusions homogenise to vapour in the 24 to 30 C range, with a maximum peak of frequency at 29 C. Type IIb inclusions also homogenise to vapour between 14 and 25 C. There appears to be no difference in homogenisation temperature distribution between the Strombolicchio and Paleostromboli II samples. The trapping pressures of the fluid inclusions have been obtained by combining the microthermometric data of the Strombolicchio and Paleostromboli II samples with the pressure-temperaturevolume (i.e. density) characteristics for a pure CO 2 system. The data on the early inclusions (type I) suggest an important magma rest at a pressure of about 290 MPa (i.e. about 11-km depth). Type IIa CO 2 inclusions suggest that a second magma rest occurred at a pressure of about 100 MPa (i.e. about 3.5-km depth), whereas type IIb inclusions ...

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“…Nitrogen-bearing fluid inclusions have been described in several migmatitic and granulitic terrains (Glassley et al, 1984;Herms and Schenk, 1992;Elvevold and Andersen, 1993;Janák et al, 1999;Kitsul et al, 2000). On Earth, nitrogen exists mainly in two oxidation states: 0, as the fundamental component of the Earth's atmosphere and in the crystal structure of some diamonds (N 2 ), and À3, as NH þ 4 in the biosphere and in ammonium-bearing silicate minerals, such as feldspars, micas and amphibole by the replacement of K þ (Andersen et al, 1995).…”

Section: The Co 2 and N 2 Sourcesmentioning

confidence: 99%

“…Since then, several studies have characterized the fluid content of granulites in order to constrain the geodynamic evolution of these rocks (e.g. : Herms and Schenk, 1992;Fonarev et al, 2003;Santosh et al, 2003Santosh et al, , 2006 or to constrain the process by which those granulites were formed (e.g. : Valley et al, 1983;Lamb et al, 1987;Mohan et al, 2003).…”

Section: Introductionmentioning

confidence: 99%

P–T-Fluid evolution and graphite deposition during retrograde metamorphism in Ribeira Fold Belt, SE Brazil: Oxygen fugacity, fluid inclusions and C–O–H isotopic evidence

Santos

Munhá

Tassinari

et al. 2011

Journal of South American Earth Sciences

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Fluid inclusions in granulite-facies metapelites of the Hercynian ancient lower crust of the Serre, Calabria, Southern Italy

Cited by 19 publications

References 43 publications

Fluid Components in Cordierite from the Rocks of Epidote-Amphibole Facies of the Muzkol Metamorphic Complex, Tajikistan: Pyrolysis-Free GC-MS Data

Fluid Components in Cordierite from the Rocks of Epidote-Amphibole Facies of the Muzkol Metamorphic Complex, Tajikistan: Pyrolysis-Free GC-MS Data

Persistent polybaric rests of calc-alkaline magmas at Stromboli volcano, Italy: pressure data from fluid inclusions in restitic quartzite nodules

P–T-Fluid evolution and graphite deposition during retrograde metamorphism in Ribeira Fold Belt, SE Brazil: Oxygen fugacity, fluid inclusions and C–O–H isotopic evidence

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