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Tag Archives: impact melt
HiRISE: Cross-section of a complex crater
This image shows a cross-section of a complex crater in Terra Cimmeria. Starting in the center, we see a series of peaks with exposed bedrock. These peaks formed during the impact event when material that was originally several kilometers below … Continue reading
Posted in Reports
Tagged bedrock, central peaks, complex craters, High Resolution Imaging Science Experiment, HiRISE, impact melt, Mars Reconnaissance Orbiter, MRO, NASA, Terra Cimmeria, University of Arizona
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Opportunity report, Sol 5042, by A.J.S. Rayl, The Planetary Society
April 11, 2018: Opportunity Presses On in Perseverance, Pace Picks Up: In the west rim of Endeavour Crater, Opportunity continued her exploration of Perseverance Valley in March – humankind’s first study of a carved channel in an ancient crater on … Continue reading
Posted in Reports
Tagged Cape Byron, Endeavour Crater, impact melt, Mars Exploration Rover, MER, NASA, Opportunity, Perseverance Valley, San Juan Pueblo, vesicular rock
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Impact-heated rock led to relatively recent water-carved valleys on Mars
New research shows that water from melted snow and ice likely carved valley networks around Lyot crater on Mars. Present-day Mars is a frozen desert, colder and more arid than Antarctica, and scientists are fairly sure it’s been that way … Continue reading
HiRISE: Bedrock exhumed from the deep
Roadside bedrock outcrops are all too familiar for many who have taken a long road trip through mountainous areas on Earth. Martian craters provide what tectonic mountain building and man’s TNT cannot: crater-exposed bedrock outcrops. Although crater and valley walls … Continue reading
Posted in Reports
Tagged bedrock, High Resolution Imaging Science Experiment, HiRISE, impact glass, impact melt, Mars Reconnaissance Orbiter, MRO, NASA, University of Arizona
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HiRISE: Preserved ejecta and impact melt
This image of a well-preserved unnamed elliptical crater in Terra Sabaea, is illustrative of the complexity of ejecta deposits forming as a by-product of the impact process that shapes much of the surface of Mars. Here we see a portion … Continue reading
Posted in Reports
Tagged ejecta, High Resolution Imaging Science Experiment, HiRISE, impact melt, Mars Reconnaissance Orbiter, MRO, NASA, Terra Sabaea, University of Arizona
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Steam jets made pits in crater floors
At first glance, the floors of many large impact craters on Mars have areas that appear smooth and flat. But a closer look at some of these flat floors shows a much more rugged landscape, where one small cuplike pit … Continue reading
Mars Rover Opportunity explores Cape York
Mars Exploration Rover Opportunity reached the south end of Cape York, a segment of the rim of Endeavour Crater about 700 meters (2,300 feet) long, on August 9, 2011. Scientists and engineers examined several targets there before driving the rover … Continue reading
Posted in Reports
Tagged breccia, Cape York, Greeley Haven, gypsum, Homestake, impact melt, impacts, Kidd Creek, Mars Exploration Rovers, Meridiani Planum, Opportunity, Tisdale, water
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