Tooting Crater Ejecta
NASA/JPL/University of Arizona
Tooting Crater Ejecta
ESP_057013_2045  Science Theme: Impact Processes
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In this picture we can see a huge tongue-like form, which looks a like a mudflow with boulders on its surface. This “tongue” is only a small part of a larger deposit that completely surrounds Tooting Crater (not visible in this image). This is part of what is called an “ejecta blanket.”

The shape and form of the deposits in the ejecta blanket can tell us about the condition of the ground when the impact crater was formed. The presence of this tongue of ejecta is interpreted as a sign that the ground was frozen before impact. The force of the impact melted ice and mixed it with rock and dust as it was thrown away from the crater. It then settled to form these tongue-like lobes all around the crater.

Written by: Susan Conway (audio: Tre Gibbs)  (10 June 2019)
 
Acquisition date
24 September 2018

Local Mars time
14:47

Latitude (centered)
24.073°

Longitude (East)
207.996°

Spacecraft altitude
286.4 km (178.0 miles)

Original image scale range
57.3 cm/pixel (with 2 x 2 binning) so objects ~172 cm across are resolved

Map projected scale
50 cm/pixel and North is up

Map projection
Equirectangular

Emission angle
0.3°

Phase angle
63.4°

Solar incidence angle
63°, with the Sun about 27° above the horizon

Solar longitude
256.5°, Northern Autumn

For non-map projected images
North azimuth:  97°
Sub-solar azimuth:  319.1°
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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.