Tag Archives: CRISM

Ancient sea-floor hydrothermal deposits in Eridania

The discovery of evidence for ancient sea-floor hydrothermal deposits on Mars identifies an area on the planet that may offer clues about the origin of life on Earth. A recent international report [published in Nature Communications] examines observations by NASA’s … Continue reading

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CRISM: Ice on rim of crater on Alba Mons

Alba Mons is the largest volcano, by area, on Mars. A low-lying volcano in the northern Tharsis region, Alba Mons has an elevation of 6.8 km, and volcanic flow fields that extend at least 1,350 km from the summit. Alba … Continue reading

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HiRISE: Prospecting from orbit

The combination of morphological and topographic information from stereo images, as well as compositional data from near-infrared spectroscopy has been proven to be a powerful tool for understanding the geology of Mars. Beginning with the OMEGA instrument on the European … Continue reading

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CRISM: Evidence of aqueous alteration near Mawrth Vallis

CRISM image 21BCB covers a region on the boundary of Chryse Planita, between Mawrth Vallis and Oyama crater. Chryse Planitia is a smooth circular 1600 km diameter plain that was a landing site for the U.S Viking 1 (landed July … Continue reading

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CRISM: Delta in Jezero Crater

Jezero Crater is a ~45km crater near the Nili Fossae region which is believed to have once been flooded with water. The crater consists of a fan-delta system that deposited rich clays in the area. An important detail for us … Continue reading

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CRISM: Clays near Mawth Vallis

Mawrth Vallis is an ancient Mars river channel (~15km wide) located along the crustal dichotomy boundary that exposes abundant light-toned layers of clay-rich rocks. Indicative of aqueous alteration, these clays may have been deposited during massive flooding events or in … Continue reading

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Opportunity: York target, post-brushing

Sol 4112, June 22, 2016. Opportunity is currently in the middle of one of the clay mineral areas spotted from orbit by the CRISM spectrometer on the Mars Reconnaissance Orbiter. The target area the rover is examining is dubbed York, … Continue reading

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Rise and fall of Martian lakes

There is a wealth of evidence, collected over the past few decades, suggesting liquid water was abundant in the early history of Mars. However, the size, evolution, and duration of standing bodies of water such as lakes on Mars’ surface … Continue reading

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Mineral clues to subglacial volcanos in Sisyphi Montes

Volcanoes erupted beneath an ice sheet on Mars billions of years ago, far from any ice sheet on the Red Planet today, new evidence from NASA’s Mars Reconnaissance Orbiter suggests. The research about these volcanoes helps show there was extensive … Continue reading

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RSLs are caused by flows of liquid brines

New findings from NASA’s Mars Reconnaissance Orbiter (MRO) provide the strongest evidence yet that liquid water flows intermittently on present-day Mars. Using an imaging spectrometer on MRO, researchers detected signatures of hydrated minerals on slopes where mysterious streaks are seen … Continue reading

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