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Carving Canyons

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Erosion, tectonic uplift, and a human-built dam have all helped shape the Upper Lake Powell area in Utah.

Erosion, tectonic uplift, and a human-built dam have all helped shape the Upper Lake Powell area in Utah.

This astronaut photograph was acquired on July 28, 2023, with a Nikon D5 digital camera using a focal length of 1,150 millimeters. It is provided by the ISS Crew Earth Observations Facility and the Earth Science and Remote Sensing Unit, Johnson Space Center. The image has been cropped and enhanced to improve contrast, and lens artifacts have been removed. The International Space Station Program supports the laboratory as part of the International Space Station National Lab to help astronauts take pictures of Earth that will be of the greatest value to scientists and the public, and to make those images freely available on the Internet. Additional images taken by astronauts and cosmonauts can be viewed at the NASA/JSC Gateway to Astronaut Photography of Earth.

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      Carving Into Carbonates at Old Faithful Geyser
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      Carving Into Carbonates at Old Faithful Geyser
      Abrading Old Faithful Geyser: On Sol 1151 (May 16, 2024), Perseverance abraded a carbonate-bearing rock called Old Faithful Geyser in the Western Margin Unit. This activity was captures by the rover’s Left Hazard Avoidance Camera (HAZCAM). NASA/JPL-Caltech This past week on Mars, Perseverance made a pit stop near Overlook Mountain to abrade a rock called Old Faithful Geyser. This target is situated within the Western side of the Margin Unit, an area around the upper edge of Jezero Crater that is astrobiologically-interesting due to its abundant carbonate. Carbonate-bearing rocks have been a major scientific focus throughout this campaign, which began with Perseverance entering the Eastern side of the Margin Unit on Sol 915 of the mission (1 sol = 1 day on Mars) in September of 2023, about 240 sols ago, then roving steadily Westward. So far, Perseverance has collected 3 cores from this Unit, including Pelican Point on Sol 923, Lefroy Bay on Sol 942, and Comet Geyser on Sol 1088. Proximity and remote science observations associated with each of these targets have all confirmed the presence of carbonate, but the grains and mineral assemblages in each rock are unique, which may indicate that carbonates in the Eastern and Western parts of the Margin have experienced different formation mechanisms and/or alteration histories. In particular, the team is interested in understanding whether the carbonate-bearing rocks in the West formed through sedimentary, igneous, or volcaniclastic processes.
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      Written by Denise Buckner, Student Collaborator at University of Florida
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