Tag Archives: lava flows

HiRISE: Young lava flows

This image shows remarkably young lava flows in Elysium Planitia. There are almost no impact craters over this flow, indicating that it is probably only a few million years old—practically an infant in geologic time. [More at link]

Posted in Reports | Tagged , , , , , , , , | Comments Off

THEMIS: Bahram Vallis’ meandering channel

THEMIS Image of the Day, April 6, 2018. This VIS image shows a section of Bahram Vallis. Bahram Vallis is located on the northeastern margin of Lunae Planum. More THEMIS Images of the Day by geological topic.

Posted in Reports | Tagged , , , , , , , , , , | Comments Off

THEMIS: A peppering of small craters

THEMIS Image of the Day, April 4, 2018. This field of small dark craters is located in southern Elysium Planitia. The dark appearance against the surrounding lava flows suggests that the craters post-date the lava flows. The small “tails” near … Continue reading

Posted in Reports | Tagged , , , , , , , , , , , | Comments Off

THEMIS: Cracked lava plates in Avernus Colles

THEMIS Image of the Day, April 3, 2018. The arcuate fractures and broken up surface shown in this image is called Avernus Colles. This unique surface has developed on the southeast margin of Elysium Plainitia. More THEMIS Images of the … Continue reading

Posted in Reports | Tagged , , , , , , , , , , , | Comments Off

HiRISE: Getting from here to there in Utopia Planitia

Getting from here to there in Utopia Planitia. Is this a wrinkle ridge or a flow margin? Knowing will help in the study of regional tectonics here. Beautiful Mars series.

Posted in Reports | Tagged , , , , , , , , , , , | Comments Off

HiRISE: Volcanic landforms in SE Elysium Planitia

Various volcanic landforms in southeast Elysium Planitia. The second image [above] is at full resolution, less than 1 km across, both are 279 km above the surface. Beautiful Mars series.

Posted in Reports | Tagged , , , , , , , , , , , | Comments Off

HiRISE: This broken land

This broken land. Surface near Athabasca Valles lava. Beautiful Mars series.

Posted in Reports | Tagged , , , , , , , , , , | Comments Off

THEMIS: Volcanic vent in Arsia Mons caldera

THEMIS Image of the Day, January 5, 2018. This THEMIS image shows part of the southern margin of the summit caldera. This image contains a variety of features representing the major events related to the formation of the volcano. At … Continue reading

Posted in Reports | Tagged , , , , , , , , , , , , , , , , | Comments Off

THEMIS: Chains of pit craters near summit of Arsia Mons volcano

THEMIS Image of the Day, January 4, 2018. The three large aligned Tharsis volcanoes are Arsia Mons, Pavonis Mons and Ascraeus Mons (from south to north). There are collapse features on all three volcanoes, on the southwestern and northeastern flanks. … Continue reading

Posted in Reports | Tagged , , , , , , , , , , , , , , , , | Comments Off

THEMIS: Pits at caldera’s edge

THEMIS Image of the Day, January 3, 2018. This THEMIS image shows part of the caldera floor of Arsia Mons. It is not uncommon for calderas to have “flat” floors after the final explosive eruption the empties the subsurface magma … Continue reading

Posted in Reports | Tagged , , , , , , , , , , , , , , , , | Comments Off