Deciphering the pressure-temperature path in low-grade metamorphic rocks by combining crystal chemistry, thermobarometry and thermodynamic modelling: An example in the Marguareis Massif, Western Ligurian Alps, Italy
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00025798%3A_____%2F25%3A10169566" target="_blank" >RIV/00025798:_____/25:10169566 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1180/mgm.2024.80" target="_blank" >https://doi.org/10.1180/mgm.2024.80</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1180/mgm.2024.80" target="_blank" >10.1180/mgm.2024.80</a>
Alternative languages
Result language
angličtina
Original language name
Deciphering the pressure-temperature path in low-grade metamorphic rocks by combining crystal chemistry, thermobarometry and thermodynamic modelling: An example in the Marguareis Massif, Western Ligurian Alps, Italy
Original language description
Unveiling the pressure-temperature path of low-grade metamorphic rocks is challenging because of the occurrence of detrital minerals and high-variance mineral assemblages (i.e. chlorite-white mica-quartz). This paper is an attempt to reconstruct the pressure-temperature history on metapelites from a low-grade metamorphic unit, i.e. the Cabanaira Unit, located in the Marguareis Massif (Western Ligurian Alps, Italy). In order to obtain the most robust result possible, multi-equilibrium thermobarometry, forward modelling and crystallochemical index measurements are used together to reconstruct a pressure-temperature path, with consideration of the strengths and weaknesses of these methods. This multidisciplinary approach allowed us to reconstruct the metamorphic evolution of the unit of interest, characterised by a pressure peak reached under low-temperature conditions (0.85-0.68 GPa and 250-285oC) followed by decompressional warming (low pressure-high temperature, 0.4-0.6 GPa and 300-335oC). This pressure-temperature path is consistent with the tectonic evolution of the investigated area proposed by previous studies, where a geological scenario in which the Cabanaira Unit experienced subduction-related processes was postulated, even if the reasons for warming remain unclear. Multi-equilibrium thermobarometry is considered to be the most suitable method to unravel the metamorphic history of low-grade rocks, whereas forward thermodynamic modelling and the calculation of crystallochemical indexes seem to resolve only some segments of the pressure-temperature path.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10505 - Geology
Result continuities
Project
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Continuities
V - Vyzkumna aktivita podporovana z jinych verejnych zdroju
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Mineralogical Magazine
ISSN
0026-461X
e-ISSN
1471-8022
Volume of the periodical
89
Issue of the periodical within the volume
2
Country of publishing house
GB - UNITED KINGDOM
Number of pages
22
Pages from-to
203-224
UT code for WoS article
001458991200001
EID of the result in the Scopus database
2-s2.0-85209715427