Tina is a graduate student with an interest in surface processes on Earth and Mars. She joined the Curiosity rover team in 2016, and quickly fell in love with rover science as a way to explore the geology of Mars and relate it back to Earth. She completed her M.S. at Western Washington University, where she used Curiosity’s Mastcam instrument to investigate spectral trends across the rover’s entire traverse. Now, she uses data from the Mars Hand Lens Imager (MAHLI) instrument to analyze the various diagenetic textures found in the rocks within the clay-sulfate transition region—a region with a geologic record reflecting a significant environmental shift from a wet to dry landscape. Tina looks at the relationships between the different diagenetic features, their chemistry, and their stratigraphic distribution to understand the timing of fluid flow in the subsurface and how it altered the primary strata, even after liquid water may have ceased to exist on the surface.