Tag Archives: pit craters

THEMIS: Pit craters on Ascraeus Mons

THEMIS Image of the Day, September 4, 2017. This image shows a collapse feature on the southeastern flank of the volcano. The circular/scalloped margin of the collapse is typical for ceiling collapse into a lava tube. However, the potential lava … Continue reading

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THEMIS: Pit crater in Noachis Terra

THEMIS Image of the Day, December 2, 2016. Today’s VIS image is located in Noachis Terra. The unnamed crater at the bottom of the image contains a central pit. Central features such as pits and peaks can provide information about … Continue reading

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THEMIS: Cracks, pits, faults, & graben in the Labyrinth of Night

THEMIS Image of the Day, October 25, 2016. This VIS image shows some of the graben which form Noctis Labyrinthus. Graben are formed when pairs of faults cause the material between them to move downward, creating the linear trough. The … Continue reading

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HiRISE: Wrinkle ridges and pit craters

Tectonic stresses highly modified this area of Ganges Catena, north of Valles Marineris. The long, skinny ridges (called “wrinkle ridges”) are evidence of compressional stresses in Mars’ crust that created a crack (fault) where one side was pushed on top … Continue reading

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THEMIS: Cyane Fossae

THEMIS Image of the Day, August 16, 2016. This VIS image show part of Cyane Fossae, located near Alba Mons. The linear feature is bounded by faulting, creating a feature called a graben. The multiple crater-type forms may indicate that … Continue reading

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HiRISE: Pits on Kasei Valles lava

Pits on Kasei Valles lava. Beautiful Mars series.

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THEMIS: Arsia Mons summit caldera

THEMIS Image of the Day, July 11, 2016. Today’s VIS image shows part of the summit caldera of Arsia Mons. More THEMIS Images of the Day by geological topic.

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THEMIS: Phlegethon Catena

THEMIS Image of the Day, April 1, 2016. Today’s VIS image shows part of Phlegethon Catena. The linear features are created by faulting. Paired faults with down dropped block of material are called graben and are formed due to tectonic … Continue reading

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HiRISE: Pit crater near Elysium Mons

This image was taken of an area on the lower southeastern flank of the volcano Elysium Mons. In the center is a small, dark pristine-appearing pit approximately 130 meters in diameter, which is clearly visible among the numerous small impact … Continue reading

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THEMIS: Central pit crater

THEMIS Image of the Day, November 13, 2015. Crater floors can have a range of features, from flat to a central peak or a central pit. This unnamed crater in Terra Sabaea has a central pit. The different floor features … Continue reading

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