Results 11 to 20 of about 180 (171)
The Effect of Variable Na/K on the CO2 Content of Slab‐Derived Rhyolitic Melts
Geophysical Monograph Series, Page 195-208., 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 ...
Michelle Muth +2 more
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Geosciences, 2021 The garnet chemical zoning method (GZM) is a reliable thermodynamic approach for forward modeling pressure-temperature (P-T) paths using observed garnet and bulk rock compositions.
Thomas M. Etzel, Elizabeth J. Catlos
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Syn-shearing deformation mechanisms of minerals in partially molten metapelites
Geophysical Research Letters, 2021 We investigated an experimentally sheared (γ = 15, γ ̇ = 3 x 10-4s-1, 300 MPa, 750°C) quartz-muscovite aggregate to understand the deformation of parent and new crystals in partially molten rocks. The SEM and EBSD analyses along the longitudinal axial section of the cylindrical sample suggest that quartz and muscovite melted partially and later ...
Dripta Dutta +2 more
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AGU Advances, 2023 The most common explanation for the depletion of high frequency waves that defines low‐frequency earthquakes (LFEs) and very low‐frequency earthquakes (VLFEs) is that fault rupture and slip are slower than typical earthquakes. However, it is difficult to
Céline Fliedner, Melodie E. French
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Mineralogia, 2023 Fluid-driven reactions are common in the upper crust, leading to mineral replacement and element redistribution on a kilometer to a micron scale. One common fluid-induced reaction is the chloritization of biotite.
Faehnrich Karol +2 more
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Hydrogen gas of organic origin in shales and metapelites [PDF]
International Journal of Coal Geology, 2017 Abstract The changes in inorganic and organic gases retained in shales and metapelites with increasing heating temperature are not fully understood. The compositional and isotopic changes of residual gases such as H 2 , CH 4 , and CO 2 in marine shales and metapelites during burial diagenesis and metamorphism were investigated in the present study ...
Suzuki, Noriyuki +2 more
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Metamorphic conditions and petrogenesis of the Qori complex metapelites using thermodynamic phase diagrams [PDF]
پترولوژیIntroduction The Sanandaj-Sirjan zone, one of the most critical areas for studying metamorphic events, originated by subduction of the Neotethys oceanic lithosphere beneath the Central Iranian microcontinent during Early Jurassic to Late Cretaceous ...
Abdolnaser Fazlnia +2 more
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Geochemistry, Geophysics, Geosystems, 2021 The geological record of deep fossil seismogenesis in subduction zones is limited due to common rock overprinting during exhumation and only a few regions expose well‐preserved deeply exhumed structures.
Francesco Giuntoli, Giulio Viola
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Геодинамика и тектонофизика, 2021 Deviations of the РТ parameters from the background values, corresponding to the lithostatic pressure and the standard geotherm characteristic of the neighboring crustal blocks of the Yenisei Ridge, were recorded by geothermobarometry in the zones of ...
O. P. Polyansky +3 more
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Garnet growth across the quartz–coesite transition in metapelites: equilibrium vs. kinetics [PDF]
European Journal of MineralogyThis study explores the growth of garnet across the quartz–coesite transition in metapelite. Garnet chemistry and texture were investigated in several metapelite samples (garnet-chloritoid micaschist) collected across different units in the northern Dora-
P. Manzotti +3 more
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