HiRISE | Layers in Crater Wall (PSP_009694

NASA/JPL-Caltech/UArizona

Layers in Crater Wall
PSP_009694_1545 Science Theme: Sedimentary/Layering Processes

WALLPAPER
800
1024
1152
1280
1440
1600
1920
2048
2560

These two craters show distinct bright layers around their rims. The crater on the top formed after the other, and its rim is sharp and less degraded, showing that it is younger.

At the juncture of the two craters is a landslide (flowing into the top crater) that probably formed during the late stages of the top crater's own formation or perhaps shortly after that.

The material that looks rough surrounding both craters is called ejecta, which is material that the impacts excavated.

Written by: Kelly Kolb (22 October 2008)

Acquisition date
20 August 2008

Local Mars time
15:32

Latitude (centered)
-25.044°

Longitude (East)
18.789°

Spacecraft altitude
255.5 km (158.8 miles)

Original image scale range
25.9 cm/pixel (with 1 x 1 binning) so objects ~78 cm across are resolved

Map projected scale
25 cm/pixel and North is up

Map projection
Equirectangular

Emission angle
9.3°

Phase angle
77.0°

Solar incidence angle
70°, with the Sun about 20° above the horizon

Solar longitude
115.5°, Northern Summer

For non-map projected images
North azimuth: 97°
Sub-solar azimuth: 43.8°

JPEG
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

JP2
Black and white
map-projected   (447MB)

IRB color
map-projected   (201MB)

JP2 EXTRAS
Black and white
map-projected (202MB)
non-map           (252MB)

IRB color
map projected (61MB)
non-map           (202MB)

Merged IRB
map projected (98MB)

Merged RGB
map-projected (94MB)

RGB color
non map           (211MB)

ADDITIONAL INFORMATION
B&W label
Color label
Merged IRB label
Merged RGB label
EDR products
HiView

NB
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

USAGE POLICY
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-Caltech/UArizona

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.