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Katherine Gibson
Washington University in St. Louis
Advisor: Brad Jolliff
Abstract
The NWA773 clan is a group of lunar meteorites that contain three prominent lithologies of lunar volcanic and related intrusive rocks; olivine gabbro cumulate, olivine phyric basalt, and a breccia. The NWA773 clan has a unique geochemical signature among lunar mare basalt meteorites. The unique geochemical signature indicates the lithologies are related and share a common source, which has been proposed to be similar to that of the Apollo 14 green volcanic glasses. The olivine phyric basalt of NWA3333 contains 30% olivine (average Fo55), 36% pyroxene (pigeonite En43Fo41Wo15 and augite En36Fs37Wo27), 31% plagioclase (An91Ab8Or1), and chromite. The olivine phyric basalt is a very-low-Ti (VLT) composition with 0.32 wt % TiO2.
Katherine Gibson is a graduate student at Washington University in St. Louis in the Department of Earth and Planetary Sciences. She is focusing on the petrology and petrography of lunar meteorites. Originally, she is from Moline, Illinois. During her undergraduate career at Indiana University in the geological sciences she completed two internships at NASA centers; Johnson Space Center and Goddard Space Flight Center. Her aspirations and goals include earning a Ph.D. and becoming a research scientist focusing on petrology of planetary materials.
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