February 21, 2024European Journal of MineralogyOpen Access

Granite magmatism and mantle filiation

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Authors

MPMichel PichavantCentre National de la Recherche Scientifique AVArnaud VillarosCentre National de la Recherche Scientifique JMJulie MichaudLeibniz University Hannover

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Implication

Review of magma generation models reveals mantle inputs in peraluminous leucogranites, suggesting unified thermal and chemical mechanisms for crustal granite suites.

Key Points

Mantle filiation operates in strongly peraluminous leucogranites, disproving pure crustal melting models through evidence of mafic magma influx and source hybridization.
Ba-, Sr- and La-rich calcic plagioclase cores confirm mantle input, while thermal energy from ultrapotassic magmas drove widespread melting in the Macusani Volcanics.
Review of intra-crustal melting models re-evaluates mica dehydration melting reactions alongside fluid-present conditions and thermal constraints from anatectic zones.
Highlights the critical role of mantle-derived heat and mass, opening a pathway to unify granite magmatism models across diverse peraluminous and metaluminous suites.

Cite This Study

Pichavant et al. (2024) studied this question.

synapsesocial.com/papers/68e7832ab6db6435876f6095 https://doi.org/10.5194/ejm-36-225-2024

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Implication

Review of magma generation models reveals mantle inputs in peraluminous leucogranites, suggesting unified thermal and chemical mechanisms for crustal granite suites.

Granite magmatism and mantle filiation

Discussion

Member takes

Implication

Key Points

Cite This Study

Granite magmatism and mantle filiation

Discussion

Member takes

Implication

Key Points

Cite This Study

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