Tractus Fossae and Tractus Catena

Scaled Image

Image Credit: NASA/JPL/ASU

About this image

This VIS image shows part of both Tractus Fossae and Tractus Catena, some of many north/south trending tectonic graben located south of Alba Mons. The deeper depression running vertically on the left side of the image is Tractus Catena. While the other grabens to the right side are Tractus Fossae. The term fossae is defined as a long, narrow depressions, whereas the term catena is defined as a chain of craters. The circular depressions within in the Tractus Catena graben lead to the descriptor name catena. However, in this case the craters are a result of roof collapse into an underlying open space such as a lava tube, rather than a set of impact craters.

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


Image ID: 
V78231007 (View data in Mars Image Explorer)
2019-08-03 20:38
Wed, 2019-09-18
512 pixels (19 km)
1824 pixels (67 km)
0.036813 km/pixel
0.0371858 km/pixel


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