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Dr. Alexandra Krull Davatzes studies the geology of Mars and Earth's best Martian analog, the Archean Earth. She is a member of the HiRISE camera team, which is taking photos of the martian surface from the Mars Reconnaissance Orbiter. Her goal is to better understand the large catastrophic flooding events that occurred in Mars' history. She is also looking at evidence of microbial life associated with Archean meteorite impact layers. She teaches environmental geology, sedimentary petrology, and planetary geology.