Tag Archives: Sirenum Fossae

THEMIS: Tectonic scars in Sirenum Fossae

Posted on January 4, 2019 by rburnham

THEMIS Image of the Day, January 4, 2019. The linear features in this VIS image are graben called Sirenum Fossae. Graben are formed when blocks of material move downward between parallel faults. The faults were created by tectonic stresses in … Continue reading →

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THEMIS: Faulting and collapse in Sirenum Fossae

Posted on December 19, 2018 by rburnham

THEMIS Image of the Day, December 19, 2018. The linear depressions in this VIS image are part of Sirenum Fossae. These depressions are called graben, which form by the down drop of material between two parallel faults. The faults are … Continue reading →

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THEMIS: Graben and pits in Sirenum Fossae

Posted on November 20, 2018 by rburnham

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: Graben in Sirenum Fossae

Posted on November 5, 2018 by rburnham

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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HiRISE: Inverted and altered light-toned terrain in Sirenum Fossae

Posted on March 7, 2018 by rburnham

Inverted and altered light-toned terrain in Sirenum Fossae. Beautiful Mars series.

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HRSC: Fracture swarms on Mars

Posted on November 16, 2017 by rburnham

These striking features on Mars were caused by the planet’s crust stretching apart in response to ancient volcanic activity. The fractures in the Sirenum Fossae region in the southern hemisphere were imaged by ESA’s Mars Express in March. They extend … Continue reading →

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THEMIS: Tectonics in Sirenum Fossae

Posted on May 3, 2017 by rburnham

THEMIS Image of the Day, May 3, 2017. Today’s false color image shows part of Sirenum Fossae. The linear depressions in this image, called graben, were formed by tectonic activity. The THEMIS VIS camera contains 5 filters. The data from … Continue reading →

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THEMIS: Varieties of geo-chaos in Gorgonum

Posted on May 2, 2017 by rburnham

THEMIS Image of the Day, May 2, 2017. Today’s false color image shows part of Gorgonum Chaos. Chaotic regions form when groundwater escapes to the surface, undermining it and causing the ground to collapse. The linear depression at the bottom … Continue reading →

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THEMIS: Tectonics in Sirenum Fossae

Posted on January 12, 2017 by rburnham

THEMIS Image of the Day, January 12, 2017. The linear depressions in this VIS image are graben. Graben are formed from tectonic activity with large blocks of material moving downward between paired faults. The crater in the bottom half of … Continue reading →

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THEMIS: Tectonics showcase in Sirenum Fossae

Posted on November 29, 2016 by rburnham

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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