• MAA-010: Geometric Features

- Image Analysis Report

Image Analysis Report


MAA Report Ref: MAA-010

Report date: July-August 2017

Research Status: Explained

Description: Geometric Features
Approximate size:  300 m

Mission image/date: MGS January 1998

Pixel width: 4.59 m
Location: South East Floor, West Candor Chasma

Found by: Unknown

Image credits: NASA/JPL/MSSS

Graphics/image editing: Mars Archaeology Archive

Image source: (See image captions)


When first discovered, this image was presented as possible evidence for a group of geometric structures. However the lack of detail in the picture (at 4.5 m per image pixel) was clearly exposed by the more recent HiRISE image of 2008 (26 cm per pixel), which showed that the apparent 3D geometric character of the features were in fact an illusion caused by insufficient resolution in the image.


None. Picture satisfactorily explained by geology.


ACCEPTED - Illusion caused by insufficient image resolution.

MAA-010.2 Geometric Features: Explained - MRO/HiRISE 2008

​Image credit: NASA/JPL/University of Arizona

Image pixel width: 26.3 cm

Image source: (Catalog page) https://www.uahirise.org/ESP_011372_1730

(Image) https://hirise-pds.lpl.arizona.edu/PDS/EXTRAS/RDR/ESP/ORB_011300_011399/ESP_011372_1730/ESP_011372_1730_RED.NOMAP.browse.jpg

MAA-010.1 Geometric Features - MGS 2000

​Image credit: NASA/JPL/MSSS

Image pixel width: 4.59 m

Original image source (image shown above) but no longer available from MSSS: http://www.msss.com/moc_gallery/ab1_m04/mediummaps/AB108405.jpg

PDS image source: