Tag Archives: glacial deposits

THEMIS: Rough ground in Nilosyrtis

THEMIS Image of the Day, June 11, 2019. Today’s VIS image is located on the margin of the Terra Sabaea highlands and the Nilosyrtis Mensae lowlands. The drop off is very steep – about 18,000 ft. This “edge” circles the … Continue reading

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Evidence against vast glaciation in Mars’ grandest canyons

Planetary Geomorphology Image of the Month, April 1, 2019: Lucy Kissick (Durham University, now at University of Oxford). The Valles Marineris (Image 1) form the largest system of interconnected canyons on Mars, up to 2000 km long and in parts … Continue reading

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HiRISE: The slow charm of brain terrain

You are staring at one of the unsolved mysteries on Mars. This surface texture of interconnected ridges and troughs, referred to as “brain terrain” is found throughout the mid-latitude regions of Mars. (This image is in Protonilus Mensae.) This bizarrely … Continue reading

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THEMIS: Galle Crater floor features

THEMIS Image of the Day, December 5, 2018. This VIS image shows a small portion of the floor of Galle Crater. This large crater is located on the eastern side of Argyre Planitia. The floor of Galle Crater contains many … Continue reading

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HiRISE: Boundary of glacial-like flow on Arsia Mons

Boundary of glacial-like flow on Arsia Mons. The exposed bedrock layers on the eastern edge of this glacial-like formation are of scientific interest because they will allow us to understand the composition of the underlying bedrock. In addition, we are … Continue reading

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THEMIS: Dunes and glacial deposits in Moreux Crater

THEMIS Image of the Day, May 30, 2018. Moreux Crater is located in the northern part of Terra Sabaea. The crater has a region of sand dunes on the crater floor, as well as features that are similar to glacial … Continue reading

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THEMIS: Channel deposits in Terra Sabaea

THEMIS Image of the Day, April 24, 2018. The northern margins of Arabia Terra and Terra Sabaea contain many unnamed channels. This channel is located in Terra Sabaea. The channel flow is toward the top of the image. This channel … Continue reading

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HiRISE: The exposed exterior of a modified crater in Tantalus Fossae

The exposed exterior of a modified crater in Tantalus Fossae. Many craters in this area have been extensively modified, but few are sitting on the edge of a graben like this. This position exposes parts of the crater exterior and … Continue reading

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HiRISE: Go with the (bright) flow

Many slopes in the middle latitudes of Mars show icy flows or glaciers. The region shown here, in the south-facing slope of a crater, is unusual because the flows have bright highlights. The color and brightness variations are likely due … Continue reading

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HiRISE: Layers in Galle Crater

This image shows a layered deposit in Galle Crater, located in the Southern cratered highlands. The geologic history of Galle Crater is not well constrained, and it contains a variety of features that have been interpreted as fluvial, lacustrine or … Continue reading

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