Experimentally reproduced textures and mineral chemistries of high-titanium mare basaltsMany of the textures, morphologies, and mineral chemistries of the high-titanium mare basalts have been experimentally duplicated using single-stage cooling histories. Lunar high-titanium mare basalts are modeled in a 1 m thick gravitationally differentiating flow based on cooling rates, thermal models, and modal olivine contents. The low-pressure equilibrium phase relations of a synthetic high-titanium basalt composition were investigated as a function of oxygen fugacity, and petrographic criteria are developed for the recognition of phenocrysts which were present in the liquid at the time of eruption.
Document ID
19780062749
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Usselman, T. M. (Lunar and Planetary Inst. Houston, TX, United States)
Lofgren, G. E. (Lunar and Planetary Inst. Houston, TX, United States)
Williams, R. J. (NASA Johnson Space Center Houston, Tex., United States)
Donaldson, C. H. (Lunar and Planetary Institute Houston, Tex., United States)