Experimental constraints on the nature of multiphase solid
inclusions and their bearing on mantle wedge metasomatism,
Bohemian Massif

J 2024

Experimental constraints on the nature of multiphase solid inclusions and their bearing on mantle wedge metasomatism, Bohemian Massif

ACOSTA-VIGIL, Antonio; Jana KOTKOVÁ; Renata ČOPJAKOVÁ; Richard WIRTH; Jörg HERMANN et. al.

Základní údaje

Originální název

Experimental constraints on the nature of multiphase solid inclusions and their bearing on mantle wedge metasomatism, Bohemian Massif

Autoři

ACOSTA-VIGIL, Antonio; Jana KOTKOVÁ; Renata ČOPJAKOVÁ; Richard WIRTH a Jörg HERMANN

Vydání

Contributions to Mineralogy and Petrology, Springer, 2024, 0010-7999

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10504 Mineralogy

Stát vydavatele

Spojené státy

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL

Impakt faktor

Impact factor: 3.700

Kód RIV

RIV/00216224:14310/24:00138777

Organizační jednotka

Přírodovědecká fakulta

DOI

https://doi.org/10.1007/s00410-024-02132-1

UT WoS

001251524200001

EID Scopus

2-s2.0-85196547355

Klíčová slova anglicky

Subduction; Mantle metasomatism; Multiphase solid inclusions; Remelting experiments; Carbonatite melt; Barium partitioning

Štítky

14315010, rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 5. 2. 2025 11:45, Mgr. Marie Novosadová Šípková, DiS.

Anotace

V originále

This study tests experimentally the hypothesis that calculated bulk compositions of multiphase solid inclusions present in minerals of ultrahigh pressure rocks, can be equated to the composition of the former trapped fluids. We investigated samples from the ultrahigh pressure garnet peridotites of the Bohemian Massif, spatially associated with ultrahigh pressure crustal rocks and representing a former subduction interface environment. Inclusions present in garnets, composed of amphibole + Ba-mica kinoshitalite + carbonates (dolomite + magnesite + norsethite), were taken to their entrapment conditions of c. 4.5 GPa and 1075 ºC. They (re)crystallized into a garnet fringe at the boundary between inclusion and host garnet, kinoshitalite ± olivine, carbonatite melt, and a hydrous fluid. Although the latter may have exsolved from the carbonatite melt upon quenching, microstructures suggest it was present at trapped conditions, and mass balance indicates that it corresponds to a Na-K-Cl-F-rich saline aqueous fluid (brine). Experiments demonstrate the stability of kinoshitalite at 4.5 GPa and 1075 ºC, and suggest that Ba-rich mica + carbonatite melt + brine coexisted at near-peak conditions. Barium is compatible in the carbonatite melt and mica with respect to the brine, with a partition coefficient between carbonatite melt and mica of ≈ 2.5–3. The garnet fringe formed from incongruent reaction of the former inclusion assemblage due to reversing the fluid(s)-host garnet reaction that occurred upon natural cooling/decompression. Loss of H2 or H2O from the inclusions due to volume diffusion through garnet and/or decrepitation, during geological timeframes upon decompression/cooling, may have prevented rehomogenization to a single homogeneous fluid. Our study shows that great care is needed in the interpretation of multiphase solid inclusions present in ultrahigh pressure rocks.

Návaznosti

GA18-27454S, projekt VaV

Název: Přenos prvků v prostředí hluboké subdukce: doklady z ultravysokotlakých metamorfovaných terénů (Akronym: element transfer)

Investor: Grantová agentura ČR, Přenos prvků v prostředí hluboké subdukce: doklady z ultravysokotlakých metamorfovaných terénů

GA22-33820S, projekt VaV

Název: Multifázové pevné inkluze v orogenních peridotitech jako svědci metasomatózy v kolizních orogenech

Investor: Grantová agentura ČR, Multiphase solid inclusions in orogenic peridotites as tracers of metasomatism in collisional orogens

Citovat

ACOSTA-VIGIL, Antonio; Jana KOTKOVÁ; Renata ČOPJAKOVÁ; Richard WIRTH a Jörg HERMANN. Experimental constraints on the nature of multiphase solid inclusions and their bearing on mantle wedge metasomatism, Bohemian Massif. Contributions to Mineralogy and Petrology. Springer, 2024, roč. 179, č. 7, s. 1-23. ISSN 0010-7999. Dostupné z: https://doi.org/10.1007/s00410-024-02132-1.

@article{2474863,
   author = {AcostaandVigil, Antonio and Kotková, Jana and Čopjaková, Renata and Wirth, Richard and Hermann, Jörg},
   article_number = {7},
   doi = {https://doi.org/10.1007/s00410-024-02132-1},
   keywords = {Subduction; Mantle metasomatism; Multiphase solid inclusions; Remelting experiments; Carbonatite melt; Barium partitioning},
   language = {eng},
   issn = {0010-7999},
   journal = {Contributions to Mineralogy and Petrology},
   title = {Experimental constraints on the nature of multiphase solid inclusions and their bearing on mantle wedge metasomatism, Bohemian Massif},
   url = {https://link.springer.com/article/10.1007/s00410-024-02132-1},
   volume = {179},
   year = {2024}
}

TY  - JOUR
ID  - 2474863
AU  - Acosta-Vigil, Antonio - Kotková, Jana - Čopjaková, Renata - Wirth, Richard - Hermann, Jörg
PY  - 2024
TI  - Experimental constraints on the nature of multiphase solid inclusions and their bearing on mantle wedge metasomatism, Bohemian Massif
JF  - Contributions to Mineralogy and Petrology
VL  - 179
IS  - 7
SP  - 1-23
EP  - 1-23
PB  - Springer
SN  - 00107999
KW  - Subduction
KW  - Mantle metasomatism
KW  - Multiphase solid inclusions
KW  - Remelting experiments
KW  - Carbonatite melt
KW  - Barium partitioning
UR  - https://link.springer.com/article/10.1007/s00410-024-02132-1
N2  - This study tests experimentally the hypothesis that calculated bulk compositions of multiphase solid inclusions present in minerals of ultrahigh pressure rocks, can be equated to the composition of the former trapped fluids. We investigated samples from the ultrahigh pressure garnet peridotites of the Bohemian Massif, spatially associated with ultrahigh pressure crustal rocks and representing a former subduction interface environment. Inclusions present in garnets, composed of amphibole + Ba-mica kinoshitalite + carbonates (dolomite + magnesite + norsethite), were taken to their entrapment conditions of c. 4.5 GPa and 1075 ºC. They (re)crystallized into a garnet fringe at the boundary between inclusion and host garnet, kinoshitalite ± olivine, carbonatite melt, and a hydrous fluid. Although the latter may have exsolved from the carbonatite melt upon quenching, microstructures suggest it was present at trapped conditions, and mass balance indicates that it corresponds to a Na-K-Cl-F-rich saline aqueous fluid (brine). Experiments demonstrate the stability of kinoshitalite at 4.5 GPa and 1075 ºC, and suggest that Ba-rich mica + carbonatite melt + brine coexisted at near-peak conditions. Barium is compatible in the carbonatite melt and mica with respect to the brine, with a partition coefficient between carbonatite melt and mica of ≈ 2.5–3. The garnet fringe formed from incongruent reaction of the former inclusion assemblage due to reversing the fluid(s)-host garnet reaction that occurred upon natural cooling/decompression. Loss of H2 or H2O from the inclusions due to volume diffusion through garnet and/or decrepitation, during geological timeframes upon decompression/cooling, may have prevented rehomogenization to a single homogeneous fluid. Our study shows that great care is needed in the interpretation of multiphase solid inclusions present in ultrahigh pressure rocks.
ER  -

ACOSTA-VIGIL, Antonio; Jana KOTKOVÁ; Renata ČOPJAKOVÁ; Richard WIRTH a Jörg HERMANN. Experimental constraints on the nature of multiphase solid inclusions and their bearing on mantle wedge metasomatism, Bohemian Massif. \textit{Contributions to Mineralogy and Petrology}. Springer, 2024, roč.~179, č.~7, s.~1-23. ISSN~0010-7999. Dostupné z: https://doi.org/10.1007/s00410-024-02132-1.

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