Igneous cooling history of olivine-phyric shergottite Yamato 980459 constrained by dynamic crystallization experiments

1First E, 1Hammer J
1Department of Geology & Geophysics, University of Hawai‘i at Mānoa, 1680 East-West Road, POST 606A, Honolulu, Hawai‘i, USA

Dynamic crystallization experiments were performed on a liquid having the bulk composition of olivine-phyric shergottite Yamato 980459, to constrain the igneous thermal history of this meteorite. Key characteristics of the meteorite’s mineralogy and texture, including several morphologically distinct olivine and pyroxene crystal populations and a glassy mesostasis devoid of plagioclase, were replicated upon cooling from 1435 to 909 °C at 1 atmosphere under reducing conditions. Three sequential cooling ramps are required to produce synthetic samples with textures and compositions matching Yamato 980459. Olivine phenocrysts formed at

Reference
First E, Hammer J (2016) Igneous cooling history of olivine-phyric shergottite Yamato 980459 constrained by dynamic crystallization experiments. Meteoritics & Planetary Science (in Press)
Link to Article [DOI: 10.1111/maps.12659]
Published by arrangement with John Wiley & Sons

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