Searching for Clinoforms in a Possible Delta
Searching for Clinoforms in a Possible Delta
ESP_039820_1750  Science Theme: Landscape Evolution
A delta is a pile of sediment dumped by a river where it enters a standing body of water. Evidence for deltas that formed billions of years ago on Mars has been mounting in recent years.

One line of evidence not yet investigated is to search for what are called clinoforms. In geology, a clinoform refers to a steep slope of sediment on the outer margin of a delta. This image seeks to test whether those features are visible and help confirm that Mars in ancient times had a standing body of water in this location.

For a bit more information on what a clinform looks like, see this page.

This caption is based on the original science rationale.

Written by: HiRISE Science Team (audio: Tre Gibbs)  (1 July 2015)

This is a stereo pair with ESP_031921_1750.
Acquisition date
24 January 2015

Local Mars time

Latitude (centered)

Longitude (East)

Spacecraft altitude
268.7 km (167.0 miles)

Original image scale range
27.1 cm/pixel (with 1 x 1 binning) so objects ~81 cm across are resolved

Map projected scale
25 cm/pixel and North is up

Map projection

Emission angle

Phase angle

Solar incidence angle
44°, with the Sun about 46° above the horizon

Solar longitude
278.1°, Northern Winter

For non-map projected images
North azimuth:  97°
Sub-solar azimuth:  334.1°
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   (947MB)

IRB color
map-projected   (492MB)

Black and white
map-projected  (459MB)
non-map           (530MB)

IRB color
map projected  (199MB)
non-map           (431MB)

Merged IRB
map projected  (236MB)

Merged RGB
map-projected  (226MB)

RGB color
non map           (422MB)
Map-projected, reduced-resolution
Full resolution JP2 download
Anaglyph details page

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’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.