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Tag Archives: volcanism
Explosive volcanism likely made olivine-rich deposit near 2020 rover landing site
Ashfall from ancient volcanic explosions is the likely source of a strange mineral deposit near the landing site for NASA’s next Mars rover, a new study finds. The research, published in the journal Geology, could help scientists assemble a timeline … Continue reading
Posted in Reports
Tagged ashfall, Isidis Planitia, Jezero Crater, Mars 2020, Syrtis Major, volcanics, volcanism
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Water floods and effusive volcanism in Hrad Vallis
[Editor’s note: From a paper by Christopher Hamilton and four co-authors recently published in the Journal of Geophysical Research.] • The Hrad Vallis region of Mars includes evidence of both aqueous flooding and effusive volcanism • Lava flows in the … Continue reading
Posted in Reports
Tagged effusive volcanism, floods, Hrad Vallis, lava flows, outflow channels, volcanism
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Mars minerology points to cold, icy ancient climate
The climate throughout Mars’ early history has long been debated – was the Red Planet warm and wet, or cold and icy? New research published in Icarus provides evidence for the latter. Mars is littered with valley networks, deltas and … Continue reading
Posted in Reports
Tagged clay minerals, climate, climate change, gypsum, iron oxides, polyhydrated sulfates, Sisyphi Montes, Sisyphi Planum, smectites, tuyas, volcanics, volcanism, zeolites
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Perfect beaches ruined by martian volcanoes
The presence of potential shorelines in the northern hemisphere of Mars suggests that Mars once had oceans. The non-constant elevations of these putative shorelines, however, do not support that hypothesis. Recent work [published in Nature] by Robert Citron and colleagues … Continue reading
Posted in Reports
Tagged northern lowlands, oceans, shorelines, Tharsis, true polar wander, volcanism
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THEMIS: Secondary caldera atop Ascraeus Mons
THEMIS Image of the Day, September 8, 2017. This image shows part of the complex caldera at the summit of the volcano. Calderas are found at the tops of volcanoes and are the source region for magma that rises from … Continue reading
Posted in Reports
Tagged Arizona State University, Ascraeus Mons, ASU, calderas, collapse features, faulting, Mars Odyssey, NASA, Tharsis, THEMIS, THEMIS Image of the Day, Thermal Emission Imaging System, volcanics, volcanism, volcanos
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THEMIS: Collapse rings in Ascraeus Mons caldera
THEMIS Image of the Day, September 7, 2017. This image shows the eastern part of the complex caldera at the summit of the volcano. Calderas are found at the tops of volcanoes and are the source region for magma that … Continue reading
Posted in Reports
Tagged Arizona State University, Ascraeus Mons, ASU, calderas, collapse features, Mars Odyssey, NASA, Tharsis, THEMIS, THEMIS Image of the Day, Thermal Emission Imaging System, volcanics, volcanism, volcanos
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THEMIS: Ring-fault tectonics at Ascraeus Mons caldera
THEMIS Image of the Day, September 6, 2017. This image shows part of the complex caldera at the summit of the volcano. Calderas are found at the tops of volcanoes and are the source region for magma that rises from … Continue reading
Posted in Reports
Tagged Arizona State University, Ascraeus Mons, ASU, calderas, Mars Odyssey, NASA, ring faults, tectonics, Tharsis, THEMIS, THEMIS Image of the Day, Thermal Emission Imaging System, volcanics, volcanism, volcanos
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THEMIS: Collapse features on flank of Ascraeus Mons
THEMIS Image of the Day, September 5, 2017. This image shows part of the northeastern flank of Ascraeus Mons, along the trend that joins the three large Tharsis volcanoes. The image has a myriad of collapse features from circular to … Continue reading
Posted in Reports
Tagged Arizona State University, Ascraeus Mons, ASU, collapse features, collapse pits, lava channels, lava flows, Mars Odyssey, NASA, Tharsis, THEMIS, THEMIS Image of the Day, Thermal Emission Imaging System, volcanics, volcanism, volcanos
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THEMIS: Pit craters on Ascraeus Mons
THEMIS Image of the Day, September 4, 2017. This image shows a collapse feature on the southeastern flank of the volcano. The circular/scalloped margin of the collapse is typical for ceiling collapse into a lava tube. However, the potential lava … Continue reading
Posted in Reports
Tagged Arizona State University, Ascraeus Mons, ASU, graben, lava channels, lava flows, Mars Odyssey, NASA, pit craters, tectonics, Tharsis, THEMIS, THEMIS Image of the Day, Thermal Emission Imaging System, volcanics, volcanism, volcanos
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THEMIS: Collapsed lava channel on Ascraeus Mons
THEMIS Image of the Day, September 1, 2017. This image shows part of the southern flank of Ascraeus Mons. The feature at the bottom of the image is a collapse feature. These features can be caused by several processes. The … Continue reading
Posted in Reports
Tagged Arizona State University, Ascraeus Mons, ASU, lava channels, lava flows, Mars Odyssey, NASA, Tharsis, THEMIS, THEMIS Image of the Day, Thermal Emission Imaging System, volcanics, volcanism, volcanos
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