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Browsing by Author "Ivanova, Marina A."
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Ivanova, Marina A.; Lorenz, Cyril A.; Krot, Alexander N.; MacPherson, Glenn J. (2015)A calcium-aluminum-rich inclusion 3N from the Northwest Africa (NWA) 3118 CV3 carbonaceous chondrite is a unique cm-sized compound object, primarily a forsterite-bearing type B (FoB) CAI, that encloses at least 26 smaller ...
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Ivanova, Marina A.; Krot, Alexander N.; Nagashima, Kazuhide; MacPherson, Glenn J. (2012)Two compound calcium-aluminum-rich inclusions (CAIs), 3N from the oxidized CV chondrite Northwest Africa (NWA) 3118 and 33E from the reduced CV chondrite Efremovka, contain ultrarefractory (UR) inclusions. 3N is a ...
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Ivanova, Marina A.; Lorenz, Cyril A.; Franchi, Ian A.; Bychkov, Andrei Y.; Post, Jeffrey E. (2013)We have conducted hydration-dehydration experiments on terrestrial olivine to investigate the behavior of oxygen isotopic fractionation to test the hypothesis that multiple cycles of aqueous and thermal processing on a ...
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Ivanova, Marina A.; Petaev, Michail I.; Macpherson, Glenn J.; Nazarov, Michail A.; Taylor, Lawrence A.; Wood, John A. (2002)Natural calcium monoaluminate, CaAl2O4, has been found in a grossite-rich calcium-aluminum-rich inclusion (CAI) from the CH chondrite Northwest Africa 470. The calcium monoaluminate occurs as colorless 223C10 03BCm subhedral ...
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Ivanova, Marina A.; Mendybaev, Ruslan A.; Shornikov, Sergei I.; Lorenz, Cyril A.; MacPherson, Glenn J. (2021)To address the bulk compositions of CAIs from CH-CB chondrites we have used a new thermodynamic method to model the evaporation of CAI-like melts. The model calculations agree closely with the results of evaporation ...
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Rosenshein, E. B.; Ivanova, Marina A.; Dickinson, Tamara L.; McCoy, Timothy J.; Lauretta, Dante S.; Guan, Y.; Leshin, L. A.; Benedix, G. K. (2006)
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Ivanova, Marina A.; Lorenz, Cyril A.; Humayun, Munir; Corrigan, Catherine M.; Ludwig, Thomas; Trieloff, Mario; Righter, Kevin; Franchi, Ian A.; Verchovsky, Alexander B.; Korochantseva, Ekaterina V.; Kozlov, Vladimir V.; Teplyakova, Svetlana N.; Korochantsev, Alexander V.; Grokhovsky, Victor I. (2020)We investigated the metal-rich chondrite Sierra Gorda (SG) 009, a member of the new G chondrite grouplet (also including NWA 5492, GRO 95551). G chondrites contain 23% metal, very reduced silicates, and rare oxidized mineral ...
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MacPherson, Glenn J.; Nagashima, Kazuhide; Krot, Alexander N.; Doyle, Patricia M.; Ivanova, Marina A. (2017)High precision secondary ion mass-spectrometry (SIMS) analyses of kirschsteinite (CaFeSiO4) in the reduced CV3 chondrites Vigarano and Efremovka yield well resolved 53Cr excesses that correlate with 55Mn/52Cr, demonstrating ...
Now showing items 1-8 of 8
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