Thermal History of the Lodranite Yamato 74357: Constraints from Compositional Zoning and Fe-Mg Ordering
Modeling of compositional zoning in spinel and of the Fe-Mg ordering state in orthopyroxene allowed determination of the cooling rate for this primitive achondrite. The data are consistent with a cooling rate of ~ 6°C/100 yr below 1000°C.
Lunar and Planetary Science Conference
- Pub Date:
- March 2004