Tag Archives: Medusae Fossae formation

New look at old data points to subsuface equatorial ice

Scientists taking a new look at older data from NASA’s longest-operating Mars orbiter have discovered evidence of significant hydration near the Martian equator — a mysterious signature in a region of the Red Planet where planetary scientists figure ice shouldn’t … Continue reading

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Water ice is buried near Mars equator in small areas

A re-analysis of data from the Neutron Spectrometer on NASA’s Mars Odyssey orbiter has nearly doubled the data’s resolution. The higher-resolution data show that small deposits of water ice lie buried at shallow depths near the martian equator in several … Continue reading

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HiRISE: Dark sediments in the Medusae Fossae Formation

Dark sediments in the Medusae Fossae Formation. Beautiful Mars series.

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Blade-like ridges on Mars have diverse origins

Thin, blade-like walls, some as tall as a 16-story building, dominate a previously undocumented network of intersecting ridges on Mars, found in images from NASA’s Mars Reconnaissance Orbiter. The simplest explanation for these impressive ridges is that lava flowed into … Continue reading

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HiRISE: Wind carved rock

The distinctively fluted surface and elongated hills in this image in Medusae Fossae are caused by wind erosion of a soft fine-grained rock. Called yardangs, these features are aligned with the prevailing wind direction. This wind direction would have dominated … Continue reading

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A mud flow on Mars?

Planetary Geomorphology Image of the Month, October 31, 2015: Lionel Wilson (Lancaster University, UK) and Peter Mouginis-Mark (University of Hawaii). Image 1 shows a distinctive flow deposit southwest of the Cerberus Fossae on Mars.  The flow source is a ~20 … Continue reading

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HiRISE: Sand filled crater, Medusae Fossae region

Sand filled crater in the Medusae Fossae region. Beautiful Mars series.

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HiRISE: Dust and dunes in western Medusae Fossae

This beautifully contrasted infrared-color image shows an area approximately 600 by 900 meters. This is a close-up of the western Medusa Fossae formation where we can see dust-covered rocky, bedrock surfaces (beige) and a bluish-tinted sand sheet that transitions into … Continue reading

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HiRISE: Dunes in Medusae Fossae formation

The dark dunes in the western Medusae Fossae formation provide some evidence of having a local origin. This image shows no large dunes, but many of the dark sand patches cover slopes up to discrete layers. It is possible that … Continue reading

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HiRISE: Wind erosion, Medusae Fossae Formation

Wind erosion of the Medusae Fossae Formation. Beautiful Mars series.

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