The nature and origin of ureilites

Details The nature and origin of ureilites The nature and origin of ureilites

Oct 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980gecoa..44.1579b&link_type=abstract

Geochimica et Cosmochimica Acta, vol. 44, Issue 10, pp.1579-1597

Mathematics

Logic

57

Meteoritic Composition, Ureilites, Mineralogy, Olivine, Petrology

Scientific paper

A theory of the origin of ureilites is presented based on mineralogical and petrological investigation of eight species including Kenna, Novo Urei, and Goalpara. The theory suggests that ureilites are primarily olivine-pigeonite cumulates crystallized from a silicate liquid which also contained suspended solid carbon phases. The carbon induced reduction of the melt and affected the ureilite mineral compositions. Petrofabric analyses show that mafic silicates are oriented in lineated and foliated patterns similar to cumulate rocks; strain rate of silicates suggests that ureilites were deformed after lithification by a mild tectonic stress and a moderate to severe shock.

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