Spinel cataclasites in 15445 and 72435 - Petrology and criteria for equilibriumThe problem of establishing the existence of equilibrium among the coexisting phases in the rock is addressed by presenting petrographic and mineral chemistry data on a new spinel cataclasite from 15445 (clast H) and data more extensive than those previously available on two clasts in 72435. Criteria useful in reconstructing the original petrology of these and other spinel cataclasites are analyzed by considering equilibrium among the different phases, that is, the mono- or polymict nature of these cataclasized samples. Finally, the role of impact processes in disturbing the equilibria is discussed.
Document ID
19820038744
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Baker, M. B. (Lunar and Planetary Inst. Houston, TX, United States)
Herzberg, C. T. (Lunar and Planetary Institute Houston, TX, United States)