Eroding Sediments
NASA/JPL/UArizona
Eroding Sediments
ESP_067690_1860  Science Theme: Sedimentary/Layering Processes
This image shows evidence of a complex cycle of cratering and erosion. The center of the image covers an old impact crater, roughly 6 to 7 kilometers in diameter. This can actually be easier to see in lower-resolution images that cover more area, like those from MRO’s Context Camera. The crater was later filled by sediments.

Erosion then occurred across the region. The crater rim was left high-standing even though material outside the rim was eroded down to the level of the crater floor. The sediments filling the crater also eroded from the rim inwards, leaving a circular pancake of sedimentary rock. Similar “rim-inwards” erosion has been hypothesized for the (much larger) Gale Crater where the Curiosity rover is operating.

Written by: Colin Dundas  (16 February 2021)

This is a stereo pair with ESP_067822_1860.
 
Acquisition date
03 January 2021

Local Mars time
14:34

Latitude (centered)
6.056°

Longitude (East)
352.424°

Spacecraft altitude
271.9 km (169.0 miles)

Original image scale range
27.4 cm/pixel (with 1 x 1 binning) so objects ~82 cm across are resolved

Map projected scale
25 cm/pixel and North is up

Map projection
Equirectangular

Emission angle
7.7°

Phase angle
48.4°

Solar incidence angle
41°, with the Sun about 49° above the horizon

Solar longitude
342.2°, Northern Winter

For non-map projected images
North azimuth:  97°
Sub-solar azimuth:  346.5°
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non-map           (434MB)

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non-map           (361MB)

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RGB color
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Full resolution JP2 download
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BONUS
4K (TIFF)
8K (TIFF)
10K (TIFF)

ADDITIONAL INFORMATION
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IRB: infrared-red-blue
RGB: red-green-blue
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Black & white is 5 km across; enhanced color about 1 km
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All of the images produced by HiRISE and accessible on this site are within the public domain: there are no restrictions on their usage by anyone in the public, including news or science organizations. We do ask for a credit line where possible:
NASA/JPL/University of Arizona

POSTSCRIPT
NASA’s Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, Calif., manages the Mars Reconnaissance Orbiter for NASA’s Science Mission Directorate, Washington. The HiRISE camera was built by Ball Aerospace and Technology Corporation and is operated by the University of Arizona.