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A Thermodynamic Model for the Subsolidus Evolution and Melting of Peridotite [PDF]

open access: hybridJournal of Petrology, 2021
We present a structural update to the thermodynamic model for calculating peridotite phase relations and melt compositions at 0·01 to 60 kbar and from 600 °C to the peridotite liquidus in the system K2O–Na2O–CaO–FeO–MgO–Al2O3–SiO2–TiO2–Fe2O3–Cr2O3 ...
Emma L. Tomlinson, T. J. B. Holland
openalex   +2 more sources

Arc-like magmas generated by mélange-peridotite interaction in the mantle wedge

open access: yesNature Communications, 2018
The mechanisms of transfer of crustal material from the subducting slab to the overlying mantle wedge are still debated. Mélange rocks, formed by mixing of sediments, oceanic crust, and ultramafics along the slab-mantle interface, are predicted to ascend
Veronique Le Roux, Horst Marschall
exaly   +2 more sources

Water in Hawaiian peridotite minerals: A case for a dry metasomatized oceanic mantle lithosphere

open access: yesGeochemistry, Geophysics, Geosystems, 2015
The distribution of water concentrations in the oceanic upper mantle has drastic influence on its melting, rheology, and electrical and thermal conductivities and yet is primarily known indirectly from analyses of OIB and MORB.
Anne H. Peslier, Michael Bizimis
doaj   +2 more sources

Insight into drilling performance parameters for in-situ detection of lithological transition [PDF]

open access: yesScientific Reports
In order to examine the rock dependence on drilling performance parameters, such as torque and rate of penetration (ROP), we conducted laboratory drilling experiments using mafic and ultramafic rocks from the Oman ophiolite and the Horoman Complex ...
Kazumasa Tanimoto   +2 more
doaj   +2 more sources

Dynamic Metasomatism Experiments Investigating the Interaction between Migrating Potassic Melt and Garnet Peridotite

open access: yesGeosciences, 2021
Dynamic metasomatism experiments were performed by reacting a lamproite melt with garnet peridotite by drawing melt through the peridotite into a vitreous carbon melt trap, ensuring the flow of melt through the peridotite and facilitating analysis of the
Stephen F. Foley, Maik Pertermann
doaj   +1 more source

Depth-dependent peridotite-melt interaction and the origin of variable silica in the cratonic mantle

open access: yesNature Communications, 2021
Peridotites from the thick roots of Archaean cratons are known for their compositional diversity, whose origin remains debated. We report thermodynamic modelling results for reactions between peridotite and ascending mantle melts. Reaction between highly
E. Tomlinson, B. Kamber
semanticscholar   +1 more source

Sheared peridotite and megacryst formation beneath the Kaapvaal craton: a snapshot of tectonomagmatic processes across the lithosphere–asthenosphere transition

open access: yes, 2021
The cratonic lithosphere–asthenosphere boundary is commonly invoked as the site of sheared peridotite and megacryst formation, a well-recognized petrologic assemblage whose genetic relationships – if any – remain poorly understood. We have undertaken a
S. Tappe   +6 more
semanticscholar   +1 more source

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