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Tag Archives: mantle
‘Marsquakes’ could shake up planetary science
Starting next year, scientists will get their first look deep below the surface of Mars. That’s when NASA will send the first robotic lander dedicated to exploring the planet’s subsurface. InSight, which stands for Interior Exploration using Seismic Investigations, will … Continue reading
Posted in Reports
Tagged core, crust, InSight, Interior Exploration Using Seismic Investigations Geodesy and Heat Transport, Jet Propulsion Laboratory, JPL, mantle, marsquakes, NASA, SEIS, Seismic Experiment for Interior Structure
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Mars’ mantle more Earth-like than Moon-like
Mars’ mantle may be more complicated than previously thought. In a new study published [February 24] in the Nature-affiliated journal Scientific Reports, researchers at Louisiana State University document geochemical changes over time in the lava flows of Elysium, a major … Continue reading
Pressure-release melting put rocky floors into early Mars craters
Martian craters in the highlands that are wider than 10 kilometers (6 miles) often have flat, smooth, shallow floors. This fact has been noted since the first spacecraft images of Mars were taken by NASA’s Mariner 4 in 1965. Over … Continue reading
Posted in Reports
Tagged craters, decompression melting, mantle, pressure-release melting, volcanism
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What turned off the Martian magnetic field?
For roughly the first 500 to 800 million years of its existence, Mars had a magnetic field generated by a natural internal dynamo. This was powered by convection currents in the planet’s molten iron core, which operated vigorously as they … Continue reading
Posted in Reports
Tagged convection, core, core dynamo, degassing, dynamo, magnetic field, mantle, volatiles, volcanos
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Did big impacts disrupt heat flow in the Martian mantle?
Mars shows more than 20 impact basins with diameters of at least 1,000 kilometers (600 miles), and five of these are 2,500 km wide or larger. Based on crater counts, most of the basins appear to have occurred between in … Continue reading