Mounds Cut by a Fissure
Mounds Cut by a Fissure
ESP_062943_2230  Science Theme: Tectonic Processes
This image shows four relatively bright mounds along a linear, curving feature that appears to be a rift zone, where the shallow surface materials have pulled apart. The mounds also appear to be deformed.

A possible geologic interpretation is that as the rift began to open, subsurface material (perhaps mud) erupted to create the mounds, which were then deformed as the rift continued to spread. This region (Chryse Planitia) is a low-elevation basin in which large outflow channels deposited water and sediments billions of years ago.

Written by: Alfred McEwen  (20 January 2020)

This is a stereo pair with ESP_062877_2230.
Acquisition date
31 December 2019

Local Mars time

Latitude (centered)

Longitude (East)

Spacecraft altitude
300.9 km (187.0 miles)

Original image scale range
30.5 cm/pixel (with 1 x 1 binning) so objects ~92 cm across are resolved

Map projected scale
25 cm/pixel and North is up

Map projection

Emission angle

Phase angle

Solar incidence angle
48°, with the Sun about 42° above the horizon

Solar longitude
128.4°, Northern Summer

For non-map projected images
North azimuth:  96°
Sub-solar azimuth:  352.4°
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non-map           (319MB)

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Black & white is 5 km across; enhanced color about 1 km
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NASA/JPL/University of Arizona

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.