NSLS-II Friday Lunchtime Seminar

"Phyllosilicates and X-ray amorphous materials on Earth and Mars, characterization with synchrotron radiation"

Presented by Michael T. Thorpe, NASA Johnson Space Center, Houston, TX

Friday, August 21, 2020, 12:00 pm — ZoomGov

Phyllosilicates and secondary X-ray amorphous materials have the unique ability to record a history of sedimentary processing and the environmental conditions during their formation. These materials are abundant in Martian sedimentary rocks, as identified from the CheMin instrument on the Curiosity rover. However, their atomic structures lack long-range order, making them difficult to characterize with CheMin and laboratory instruments. Synchrotron radiation provides a state-of-the-art technique to characterize the structure and composition of these juvenile alteration products. Using sediments from the basaltic terrains of Iceland , we seek to understand how the composition and short-range atomic order of secondary phases evolve from source to sink.

Hosted by: Ignace Jarrige

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