Tag Archives: graben

THEMIS: Sirenum Fossae

THEMIS Image of the Day, July 3, 2015. The linear features in this VIS image are faults. Where depressions are formed bounded by faulting the feature is called a graben. These faults and graben are part of a large region … Continue reading

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HiRISE: Right angle on Pavonis Mons

A right angle on Pavonis Mons; this feature could be a possible fracture or erosional feature. Beautiful Mars series.

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HiRISE: Gigas Sulci

A sulcus (or sulci, plural) is defined as “subparallel furrows and ridges.” This is a purely descriptive term for landforms that could have a variety of origins. At this location it appears to be a graben (which is a fault-bounded … Continue reading

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THEMIS: Sirenum Fossae

THEMIS Image of the Day, May 28, 2015. The THEMIS VIS camera contains 5 filters. The data from different filters can be combined in multiple ways to create a false color image. These false color images may reveal subtle variations … Continue reading

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THEMIS: Mangala Fossae

THEMIS Image of the Day, May 22, 2015. The linear wall at the bottom of this VIS image is a fault. The linear depression caused by faulting is part of a long depression called Mangala Fossae. More THEMIS Images of … Continue reading

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THEMIS: More Sirenum Fossae

THEMIS Image of the Day, May 1, 2015. The subtle paired fractues at the bottom of this VIS image are part of Sirenum Fossae, though it is hundreds of km away from yesterday’s image location. Numerous gullies at the top … Continue reading

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THEMIS: Sirenum Fossae

THEMIS Image of the Day, April 30, 2015. Today’s VIS image shows several linear depressions that cross an unnamed crater. The depressions are tectonic fractures that are hundreds of km long. More THEMIS Images of the Day by geological topic.

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HiRISE: Gully questing in a Terra Cimmeria trough

Gully questing in a Terra Cimmeria trough. Beautiful Mars series.

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HiRISE: Gullies & layers near Mariner Crater

Gullies are commonly found in the southern mid-latitudes of Mars. In this image they start near top of a long ridge, and descend into an impact crater that lies at the bottom of the ridge, moving through a rocky layer … Continue reading

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HiRISE: Intersecting graben

Intersecting graben. Graben are depressions that occur along parallel faults. Beautiful Mars series.

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