Jumbled Blocks on the Floor of Melas Chasma
Jumbled Blocks on the Floor of Melas Chasma
ESP_058527_1695  Science Theme: Sedimentary/Layering Processes
This part of Melas Chasma has been the target for many previous HiRISE images due to its diversity of terrains and materials. This observation covers an area not previously imaged, revealing a chaotic jumble of bright layered sediments, perhaps resulting from large landslides.

In a closeup with enhanced colors, we can see an assortment of materials. Dark sand covers the low areas of the scene.

Written by: Alfred McEwen (audio: Tre Gibbs)  (18 February 2019)
Acquisition date
20 January 2019

Local Mars time

Latitude (centered)

Longitude (East)

Spacecraft altitude
260.7 km (162.0 miles)

Original image scale range
52.7 cm/pixel (with 2 x 2 binning) so objects ~158 cm across are resolved

Map projected scale
50 cm/pixel and North is up

Map projection

Emission angle

Phase angle

Solar incidence angle
30°, with the Sun about 60° above the horizon

Solar longitude
327.6°, Northern Winter

For non-map projected images
North azimuth:  97°
Sub-solar azimuth:  357.4°
Black and white
map projected  non-map

IRB color
map projected  non-map

Merged IRB
map projected

Merged RGB
map projected

RGB color
non-map projected

Black and white
map-projected   (234MB)

IRB color
map-projected   (133MB)

Black and white
map-projected  (108MB)
non-map           (143MB)

IRB color
map projected  (48MB)
non-map           (145MB)

Merged IRB
map projected  (240MB)

Merged RGB
map-projected  (221MB)

RGB color
non map           (134MB)
B&W label
Color label
Merged IRB label
Merged RGB label
EDR products

IRB: infrared-red-blue
RGB: red-green-blue
About color products (PDF)

Black & white is 5 km across; enhanced color about 1 km
For scale, use JPEG/JP2 black & white map-projected images

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

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.