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Tag Archives: volcanic activity
Mars’ oceans formed early, with a possible assist from volcanism
A new scenario seeking to explain how Mars’ putative oceans came and went over the last 4 billion years implies that the oceans formed several hundred million years earlier and were not as deep as once thought. The proposal [published … Continue reading
Posted in Reports
Tagged crustal dichotomy, oceans, polar ocean, Tharsis, volcanic activity
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HiRISE image: Fissure near Cerberus Fossae with tectonic morphologies
The linearity of the volcanic vent shown in this HiRISE image, in conjunction with evidence of lava flow from the vent, suggests control by combined volcano-tectonic processes…. [More at link]
Posted in Reports
Tagged Cerberus Fossae, fissures, HiRISE, Mars Reconnaissance Orbiter, tectonics, volcanic activity, volcanic vent
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Supervolcanos in Arabia on Mars: Update
The idea of giant volcanos erupting in Arabia was proposed by Joseph Michalski (Planetary Science Institute) in a talk at the Lunar and Planetary Science Conference in March 2013. Michalski and coauthor Jacob Bleacher (NASA Goddard Space Flight Center) have … Continue reading
Posted in Reports
Tagged Arabia Terra, Eden Patera, Euphrates Patera, explosive volcanism, Ismenia Patera, Oxus Cavus, Oxus Patera, Semeykin Crater, Siloe Patera, supervolcanos, volcanic activity, volcanic ash, volcanism, volcanos
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Touching Mars from Earth
Remote sensing of Mars usually happens when spacecraft sensors look down from orbit around the Red Planet. But sensors on Earth can also get in on the fun, especially when they actively reach out to the planet via radio waves. … Continue reading
Posted in Reports
Tagged Amazonis, Arecibo Observatory, Cerberus, Elysium, lava flows, lava roughness, radar, Tharsis, Utopia, volcanic activity, volcanos
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Cracks in the basement
When geological forces open a crack in bedrock, molten magma can squeeze in and widen it, after which the magma cools and hardens in place. The result is a dike, and such features let geologists delve into an outcrop’s history … Continue reading
Posted in Reports
Tagged Coprates Chasma, CRISM, dikes, HiRISE, Mars Reconnaissance Orbiter, olivine, pyroxene, Tharsis, Valles Marineris, volcanic activity
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