Petrology of the Cangas de Onis and nulles regolith breccias Implications for parent body history

Details Petrology of the Cangas de Onis and nulles regolith breccias Implications for parent body history Petrology of the Cangas de Onis and nulles regolith breccias Implications for parent body history

Jun 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985metic..20..331w&link_type=abstract

Meteoritics (ISSN 0026-1114), vol. 20, pt. 2, June 30, 1985, p. 331-345.

Computer Science

11

Breccia, Chondrites, Metamorphism (Geology), Meteoritic Composition, Petrology, Regolith, Olivine, Pyroxenes, Spain, Meteorites, Petrology, Cangas De Onis, Nulles, Regolith, Breccias, Parent Bodies, History, H Chondrites, Samples, Meteorite, Composition, Mineralogy, Clasts, Matrix, Texture, Comparisons, Taenites, Depth, Formation, Metalography, Cooling, Enrichment, Impacts

Scientific paper

Cangas de Onis and Nulles are H chondrite regolith breccias from northern Spain. Uniform mineral compositions in both Cangas de Onis and Nulles indicate that their matrices consist almost entirely of comminuted equilibrated clasts. If these meteorites are representative samples of the regoliths in which they resided, the regoliths were compositionally homogeneous at the time of breccia consolidation. Zoned taenites within the clastic matrix of Cangas de Onis scatter widely on composition-dimension plots, indicating that these taenites cooled at different rates (about 1 - 1000 K/m.y.) at various depths (1 - 150 km). This suggests that the H chondrite parent body was disrupted and reassembled.

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