Tag Archives: collapse pits

THEMIS: Lava tube skylights in Daedalia Planum

THEMIS Image of the Day, May 19, 2017. Today’s VIS image show lava flows in Daedalia Planum that originated from Arsia Mons. At lower right, note the three circular “skylights” — places where the roof of an underground lava tube … Continue reading

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HiRISE: Pits and channels of Hebrus Valles

The drainages in this image are part of Hebrus Valles, an outflow channel system likely formed by catastrophic floods. Hebrus Valles is located in the plains of the Northern lowlands, just west of the Elysium volcanic region. Individual channels range … Continue reading

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HiRISE: Mesas and pits

What’s up and what’s down? This image covers mesas, or high-standing plateaus, to the north and pits, or low-standing, depressions to the south. If it looks the other way around, then you are not seeing the topography correctly. Remember that … Continue reading

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THEMIS: Tractus Catena

THEMIS Image of the Day, July 5, 2016. This VIS image shows part of Tractus Catena, just one of many north/south trending tectonic graben located south of Alba Mons. The features running vertically in the image are part of Tractus … Continue reading

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HiRISE: Faulted layers in collapse pits

This image shows a set of coalesced collapse pits in western Valles Marineris. Fine layers are exposed in the walls of the pits, and in some places those layers are displaced by faults. What formed these layers, and what caused … Continue reading

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HiRISE: Pit near Elysium Mons

Pit near Elysium Mons. Beautiful Mars series.

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THEMIS: Windstreaks false color

THEMIS Image of the Day, January 30, 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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HiRISE: Eastern portion of Cerberus Fossae

Visible in this observation is a section of Cerberus Fossae (width approximately 250 meters), which are comprised of a series of rifts present located in Elysium Planitia just north the Martian equator. The fossae (Latin plural for a “ditch” or … Continue reading

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THEMIS: Ascraeus Mons false color

THEMIS Image of the Day, January 6, 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: Cyane Fossae

THEMIS Image of the Day, July 31, 2014. The linear feature in this image is part of Cyane Fossae. The circular collapse features are bounded by linear faults. More THEMIS Images of the Day by geological topic.

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