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UID:seminar-15324@epss.ucla.edu
DTSTAMP:20260523T211836Z
DTSTART:20260408T120000Z
DTEND:20260408T010000Z
SUMMARY:New Insights into Ancient Water on Mars Revealed with Radar on Mars 2020
LOCATION:e.g.\, 3853 Slichter Hall
DESCRIPTION:Speaker: Dr. Emily Cardarelli
Date: Wednesday\, April 8\, 2026
Time: 12:00p - 1:00p

Abstract
The surface of Mars once hosted flowing liquid water and a warmer climate than today\, with past water-rock interactions recorded by the carbonate deposits found on its surface. This work explores the depositional setting of the Margin unit\, a major Mg-carbonate deposit near the fluvial inlet to Jezero crater\, using ground-penetrating radar data collected by the NASA Mars 2020 Perseverance rover’s Radar Imager for Mars Subsurface Experiment (RIMFAX) instrument. Soundings are reported from more than 35 m below ground\, ~1.75 times deeper than other Jezero geologic units explored to date. We identify numerous subsurface features and submeter to hundred-meter scale layering across a ~6.1-km rover traverse. We infer that subsurface reflectors are consistent with buried fluvial features that have undergone multiple erosional-depositional episodes. This work extends the known history of aqueous activity within Jezero crater. It illuminates a well-preserved paleo landscape wherein a deltaic environment developed before the formation of the Jezero Western Delta\, as early as the Noachian (~4.2 to 3.7 billion years ago).
URL:https://epss.ucla.edu/new-insights-into-ancient-water-on-mars-revealed-with-radar-on-mars-2020/
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