Department Colloquium Series


Monday, February 27, 2017, 12:00pm


Haller Hall (Geological Museum, room 102)

Speaker: Dr. Bethany L. Ehlmann (California Institute of Technology)

Title: "Volatile Cycling and Environmental Change on Early Mars"

Abstract: The last decade of orbiter-, lander-, and rover-based investigations of Mars has led to the discovery of thousands of deposits with minerals formed by interaction with water. Hydrothermal, diagenetic, weathering, and lacustrine environments all existed, varying in time and space. Here, I will review these findings briefly, and then discuss ongoing research on the implications of mineral formation on volatile cycling, using recent constraints from isotopic data acquired by the SAM mission on MSL. Particular focus will be on carbon with some additional discussion of hydrogen, time permitting. [Background Reading]