Si- versus Mg-metasomatism at the crust–mantle interface: insights from experiments, natural observations and geochemical modeling [PDF]
Progress in Earth and Planetary Science, 2023 The slab–mantle interface in subduction zones is one of the geological boundaries with the most significant chemical potential gradients, which leads to fluid-mediated metasomatic reactions and chemical transport.
Atsushi Okamoto, Ryosuke Oyanagi
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Geophysical Monograph Series, Page 137-165., 2020 This book is Open Access. A digital copy can be downloaded for free from Wiley Online Library.
Explores the behavior of carbon in minerals, melts, and fluids under extreme conditions
Carbon trapped in diamonds and carbonate-bearing rocks in subduction zones are examples of the continuing exchange of substantial carbon ...
Konstantin Litasov +3 more
wiley +5 more sources
Deformation and metasomatism recorded by single-grain apatite petrochronology
Geology, 2022 The timing and processes of ductile deformation and metasomatism can be documented using apatite petrochronology. We integrated microstructural, U-Pb, and geochemical analyses of apatite grains from an exhumed mylonitic shear zone in the St.
M. Odlum +4 more
semanticscholar +1 more source
Geology, 2022 Carbonate and silicate metasomatism occurring in subduction zones is an important mechanism underlying mantle heterogeneity and compositional diversity of mantle-derived rocks.
Dong-Bo Tan +5 more
semanticscholar +1 more source
Geophysical Research Letters, 2022 Talc formation via silica‐metasomatism of ultramafic rocks is believed to play key roles in subduction zone processes. Yet, the conditions of talc formation remain poorly constrained.
E. Codillo, F. Klein, H. Marschall
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Megathrust Shear Modulated by Albite Metasomatism in Subduction Mélanges
Geochemistry Geophysics Geosystems, 2022 Aseismic megathrust slip downdip of the seismogenic zone is accommodated by either steady creep or episodic slow slip events (SSEs). However, the geological conditions defining the rheology of megathrust slip remain elusive.
K. Ujiie +8 more
semanticscholar +1 more source
COH-fluid induced metasomatism of peridotites in the forearc mantle
Contributions to Mineralogy and Petrology, 2022 Devolatilization of subducting lithologies liberates COH-fluids. These may become partially sequestered in peridotites in the slab and the overlying forearc mantle, affecting the cycling of volatiles and fluid mobile elements in subduction zones. Here we
Melanie J. Sieber +2 more
semanticscholar +1 more source
Journal of Geophysical Research: Solid Earth, 2021 Fluid‐rock interaction in ultramafic rocks considerably affects the chemical and isotopic composition of the oceanic lithosphere. We present a geochemical and petrological study of serpentinites and ophicalcites of the Northern Apennine ophiolite, Italy.
E. Schwarzenbach +3 more
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Infiltration metasomatism of the Allende coarse-grained calcium-aluminum-rich inclusions
Progress in Earth and Planetary Science, 2021 We report on the mineralogy, petrography, and O and Al-Mg isotopic systematics of secondary mineralization in the metasomatically altered igneous Ca,Al-rich inclusions (CAIs) [compact type A (CTA), B1, B2, forsterite-bearing B (FoB), and C] from the CV3 ...
A. Krot, M. Petaev, K. Nagashima
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TO THE ONTOGENESIS OF AESCHYNITE IN FELDSPAR VEIN NO. 31 OF THE VISHNEVYE GORY, SOUTH URALS [PDF]
Минералогия, 2022 Small grains of accessory aeschynite in feldspar vein no. 31 of Vishnevye Mountains (South Urals) co-crystallize with late growth zones of feldspar crystals, as well as with ilmenite, titanomagnetite, muscovite, zircon, monazite, thorite, rutile ...
V.A. Popov, I.A. Blinov, V.I. Popova
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