Tag Archives: channels

HiRISE: Sources of gullies in Hale Crater

HiRISE color can show mineralogical differences due to the near-infrared filter. The sources of channels on the north rim of Hale Crater show fresh blue, green, purple and light toned exposures under the the overlying reddish dust. The causes and … Continue reading

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THEMIS: Reull Vallis, ancient channel

THEMIS Image of the Day, April 7, 2017. This VIS image shows a short section of Reull Vallis. Reull Vallis starts in Promethei Terra and ends in Hellas Plainitia. More THEMIS Images of the Day by geological topic.

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HiRISE: Channel networks on Arabia crater wall

Channel networks on the wall of a crater in Arabia Terra. Beautiful Mars series.

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HiRISE: Distinctive brightness

This full-resolution image is centered on a bright deposit at the end of a gully channel. The bright deposit does not seem to be present in an image acquired several years earlier than 2009, and is likely to be very … Continue reading

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HiRISE: Plains south of Valles Marineris

This enhanced-color sample reveals the incredible diversity of landforms on some Martian plains that appear bland and uniform at larger scales. Here we see layers, small channels suggesting water flow, craters, and indurated sand dunes. [More at link]

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THEMIS: Channels of Nirgal Vallis

THEMIS Image of the Day, March 2, 2017. This VIS image shows a portion of Nirgal Vallis. A tributary of the channel is seen on the left side of the image, with the main channel crossing the image from left … Continue reading

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HiRISE: Martian meanders and scroll-bars

This is a portion of an inverted fluvial channel in the region of Aeolis / Zephyria Plana, at the Martian equator. Channels become inverted when the sediments filling them become more resistant to erosion than the surrounding material. Here, the … Continue reading

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THEMIS: Morning light on Reull Vallis

THEMIS Image of the Day, January 27, 2017. Today’s VIS image, made soon after local sunrise, shows a small portion of Reull Vallis. Reull Vallis is one of the major channels entering eastern Hellas Planitia. More THEMIS Images of the … Continue reading

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HiRISE: Pits and channels of Hebrus Valles

The drainages in this image are part of Hebrus Valles, an outflow channel system likely formed by catastrophic floods. Hebrus Valles is located in the plains of the Northern lowlands, just west of the Elysium volcanic region. Individual channels range … Continue reading

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THEMIS: Crater channels, gullies, dunes & a pit

THEMIS Image of the Day, January 25, 2017. This VIS image shows part of an unnamed crater in Terra Cimmeria. The crater rim is dissected by gullies, and the central pit has several channels entering from the higher elevation of … Continue reading

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