Current Research in EEPS: Melanie Barboni, Arizona State University
2020-9-24, 400-545 PM (Central Time)
Discovering lost lunar magmas
An accessible record of the processes leading to the origin and early evolution of the Earth-Moon system, and thus of the formation of the rocky planets of the inner solar system, is best preserved in those precious rocks brought back from the surface of the Moon half a century ago. Indeed, Lunar magmatic rocks not only recorded critical information about planetary differentiation, they also record the tempo of meteorite impacts in the early inner solar system. Lunar zircons found within Apollo samples record over 500 Ma (from 4.4 to 3.9 Ga) of the Moon magmatic history and are thought to have crystallized during one of the two situations described above (primary differentiation of the Moon or in later impact events). However, identifying which zircon derives from the crystallization of the Lunar Magma Ocean, and which crystallized in subsequent impact melts is not straight forwards. This is because most lunar rocks record a mixture of these primary and secondary processes, preserving chemical signatures inherited from early magmatism and potentially overprinted by secondary impact heating. In this talk, I will present old and new geochemical tools applied to Lunar zircons that, used together, have the potential to decipher the complex magmatic history of the Moon and re-discover lunar magmas that got lost along the tumultuous history of our shinny neighbor.
Webinar link: https://riceuniversity.zoom.us/j/93499656677?pwd=UUVvT0hFcWcvWSs3QXNLNGIvSWZkdz09
A passion for hummingbirds and beyond
Also, please stick around after her main lunar talk. Melanie is a highly accomplished photographer and artist and a renowned hummingbird aficionado. She will share some of her passions with us. Join us afterwards for an informal session on her photography, illustrations and wood carvings of hummingbirds and more!
To learn more about Melanie, please go to her academic and nature websites