THEMIS: Faults and gullies in Hebes Chasma

Hebes Chasma faults and gullies (THEMIS_IOTD_20170816)THEMIS Image of the Day, August 16, 2017. This image shows the part of the northern cliff face of Hebes Chasma at the top of the image. The linear features aligned diagonally across the top of the image are large faults. These faults may have been created at the same time that the chasma formed. The materials seen at the bottom half of this image are part of the erosion of the central mesa. The layered material of the mesa appear to have been eroded by both wind and water action.

Hebes Chasma is an enclosed basin not connected to Valles Marineris. The cliff faces of the chasma itself and the interior mesa appear quite different, which may provide information on how the chasma and the mesa formed. (More on Hebes Chasma:

NASA’s Mars Odyssey spacecraft has spent over 15 years in orbit around Mars, circling the planet more than 69,000 times. It holds the record for longest working spacecraft at Mars. THEMIS, the IR/VIS camera system, has collected data for the entire mission and provides images covering all seasons and lighting conditions.

Over the years many features of interest have received repeated imaging, building up a suite of images covering the entire feature. From the deepest chasma to the tallest volcano, individual dunes inside craters and dune fields that encircle the north pole, channels carved by water and lava, and a variety of other feature, THEMIS has imaged them all.

For the next several months the Image of the Day will focus on the Tharsis volcanoes, the various chasmata of Valles Marineris, and the major dunes fields. We hope you enjoy these images!

More THEMIS Images of the Day by geological topic.

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