Alpine glaciers (Released 27 August 2003)

Scaled Image

Image Credit: NASA/JPL/ASU

About this image

This image shows part of the western flank of Arsia Mons, the southernmost of the three great Tharsis Montes. The surface shows parallel ridges more reminiscent of a Zen garden than any typical geological feature. These ridges are not typical of lava flow fronts, so a different explanation has been proposed by Mars scientists. These ridges may instead be ancient signs of previously existing glaciers that formed high on the volcano's flank. As glaciers retreat with the seasons and shifting climate, they leave behind a mound of debris along their receding edge. Successive retreats can produce a series of parallel ridges similar to those seen here.

Please see the THEMIS Data Citation Note for details on crediting THEMIS images. 


Image ID: 
V07258002 (View data in Mars Image Explorer)
2003-08-03 17:06
Wed, 2003-08-27
1024 pixels (18 km)
3648 pixels (64 km)
0.017548 km/pixel
0.017676 km/pixel


PNG | JPEG (high res) | JPEG (reduced res) | PDF | TIFF