Tag Archives: graben

THEMIS: Graben cuts across Claritas Fossae crater

THEMIS Image of the Day, December 7, 2018. Located on the northern margin of Aonia Terra, this unnamed crater interacts with one of the fossa, also called a graben. In this image, it is apparent that the tectonic depression crosses … Continue reading

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THEMIS: Solis Planum lava flows and graben

THEMIS Image of the Day, November 30, 2018. Today’s VIS image shows part of Solis Planum. Both volcanic and tectonic forces created the features in this image. The linear features that run diagonally across the image are fault features called … Continue reading

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THEMIS: Graben and pits in Sirenum Fossae

THEMIS Image of the Day, November 20, 2018. This VIS image is located in Sirenum Fossae near Daedalia Planum. The arc at the bottom of the image is the rim of a crater that was dissected when the tectonic event … Continue reading

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THEMIS: Channel in Coracis Fossae

THEMIS Image of the Day, November 19, 2018. Today’s VIS image shows one of the numerous channel features that dissect the highlands between Solis Planum and Aonia Terra. The linear features in the region include both tectonic graben and fluvial … Continue reading

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THEMIS: Graben in Sirenum Fossae

THEMIS Image of the Day, November 5, 2018. This VIS image shows a section of Sirenum Fossae. The linear features are called graben, and are a sure sign of tension force in the local crust. Graben are formed by blocks … Continue reading

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THEMIS: Tectonic ‘grid’ in Noctis Labyrinthis, plus a landslide triggered by impact

THEMIS Image of the Day, October 30, 2018. This VIS image is located in Noctis Labyrinthus. There are two directions of faults visible, which intersect at an approximately 90 degree angle. The faults running from bottom right to upper left … Continue reading

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HiRISE: Possible rock falls on steep slopes

Possible rock falls on steep slopes in Cerberus Fossae. Our goal here is to take “before” images at HiRISE resolution in order to identify fresh rockfalls that might be able to be associated with seismic events or Marsquakes detected by … Continue reading

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THEMIS: Graben in Tempe Fossae in false color

THEMIS Image of the Day, October 26, 2018. This false-color VIS image shows part of Tempe Fossae. Tempe Fossae is a series of tectonic graben that cross Tempe Terra. The downward movement of blocks of material between bounding faults create … Continue reading

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THEMIS: Lava channels on Pavonis Mons

THEMIS Image of the Day, August 24, 2018. This VIS image shows part of the southwestern flank of Pavonis Mons. The channel and nearby oval depressions are both related to the flow of lava. Narrow lava flows can create channels. … Continue reading

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THEMIS: Channel flow in Sacra Fossae

THEMIS Image of the Day, August 16, 2018. The right-angle intersection of the depressions in this VIS image is one of the graben that form Sacra Fossae. The fossae are located on Sacra Mensa, near the beginning of Kasei Valles. … Continue reading

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