Tag Archives: volcanics

THEMIS: Elysium Fossae

THEMIS Image of the Day, September 3, 2019. This VIS image is located west of Elysium Mons in the region called Elysium Fossae. The fossae are comprised of both linear and sinuous channels, usually interpreted to have both fluid and … Continue reading

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THEMIS: Cerberus Fossae graben

THEMIS Image of the Day, August 30, 2019. The linear depressions at the top of the VIS image are some of the graben that comprise Cerberus Fossae. Graben form where extensional tectonic forces allows blocks of material to subside between … Continue reading

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THEMIS: Lava ridge on flank of Pavonis Mons

THEMIS Image of the Day, August 26, 2019. Today’s VIS image shows lava flows near the flank of Pavonis Mons. Pavonis Mons is one of the three large aligned Tharsis region volcanoes. At top is a fine example of a … Continue reading

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HiRISE: Narrow troughs

Narrow troughs. What exactly are the nature of these thin, narrow troughs? They might may be part of a system of dikes that came from the same magma source that fed the whole area in Thaumasia Planum, just south of … Continue reading

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THEMIS: Arsia Mons lava flows

THEMIS Image of the Day, August 23, 2019. Arsia Mons is the southernost of the large aligned Tharsis volcanoes. Flows originating at Arsia Mons cover a vast region. The flows in this VIS image are part of the SW flow … Continue reading

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THEMIS: Granicus Valles channel

THEMIS Image of the Day, August 22, 2019. A section of Granicus Valles crosses the center of this VIS image. Granicus Valles is a complex channel system located west of Elyisum Mons. The channel system is about 750km long. It … Continue reading

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THEMIS: Biblis Patera

THEMIS Image of the Day, August 21, 2019. Today’s VIS image shows Biblis Patera, the summit caldera of the volcano Biblis Tholus. This volcano is located west of Pavonis Mons and is just one of the numerous volcanoes found in … Continue reading

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THEMIS: Ascraeus Mons lava flows

THEMIS Image of the Day, August 20, 2019. The lava flows and other volcanic features in this VIS image (such as pit crater and pit chains) are part of Ascraeus Mons. Ascraeus Mons is the middle volcano in the aligned … Continue reading

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THEMIS: Nili Fossae graben

THEMIS Image of the Day, August 16, 2019. The two linear depressions in this VIS image are part of the Nili Fossae fracture system. Nili Fossae is the name of a collection of curved faults and down-dropped blocks of crust … Continue reading

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THEMIS: Flank of Albor Tholus volcano

THEMIS Image of the Day, August 6, 2019. Today’s VIS image shows a portion of the flank of Albor Tholus, a volcano found in the Elysium volcanic complex. The pits and cracks may have formed when the volcano’s flank responded … Continue reading

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