Tag Archives: graben

THEMIS: Tectonics showcase in Sirenum Fossae

THEMIS Image of the Day, November 29, 2016. Today’s VIS image shows part of Sirenum Fossae, a large graben on the margin between Terra Sirenum and Daedalis Planum. Grabens are formed by the downward movement of material between parallel tectonic … Continue reading

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THEMIS: Canyons in the Labyrinth of Night

THEMIS Image of the Day, November 28, 2016. Today’s VIS image shows a small portion of Noctis Labyrinthus. Noctis Labyrinthus is a network of tectonic graben and collapse valleys on the western margin of Valles Marineris. More THEMIS Images of … Continue reading

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THEMIS: Pavonis Mons

THEMIS Image of the Day, November 8, 2016. This VIS image shows part of the area where Pavonis Chasma intersects with Pavonis Fossae. It is a region of lava flows from Pavonis Mons and depressions likely formed by collapse into … Continue reading

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HRSC: A record of ancient tectonic stress

Sets of ridges and troughs some 1000 km north of the giant Olympus Mons volcano contain a record of the intense tectonic stresses and strains experienced in the Acheron Fossae region on Mars 3.7–3.9 billion years ago. This scene, captured … Continue reading

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HiRISE: Cracked crater on a graben floor

Modified crater on graben floor. Beautiful Mars series.

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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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THEMIS: Faults and cracks in Claritas Fossae

THEMIS Image of the Day, October 5, 2016. The linear depressions in this VIS image are some of the numerous graben that make up Claritas Fossae. Graben form when two faults cause a block of material to be dropped to … 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: Faulting Mars

This region of Xanthe Terra has mostly been contracted due to thrust faulting, but this local region shows evidence of extensional faulting, also called normal faulting. When two normal faults face each other, they create a bathtub-like depression called a … Continue reading

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THEMIS: Graben in Nili Fossae

THEMIS Image of the Day, July 20, 2016. Nili Fossae is a large band of parallel graben located to the northeast of Syrtis Major. The graben in this VIS image were formed by tectonic activity, with faulting that creates the … Continue reading

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