Tag Archives: wrinkle ridges

THEMIS: Dunes and wrinkle ridge, Meroe Patera

THEMIS Image of the Day, October 26, 2017. This image shows part of the dune field near Meroe Patera. High resolution imaging by other spacecraft has revealed that the dunes in this region are moving. Winds are blowing the dunes … Continue reading

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THEMIS: Large wrinkle ridge in Meroe Patera

THEMIS Image of the Day, October 25, 2017. This image shows part of the dune field near Meroe Patera. The large ropy ridge running down the picture is a wrinkle ridge. These are caused when compression forces cause lava flows … Continue reading

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THEMIS: Dunes, wrinkle ridges, wind streaks

THEMIS Image of the Day, October 24, 2017. This image shows part of the dune field near Meroe Patera. High resolution imaging by other spacecraft has revealed that the dunes in this region are moving. Winds are blowing the dunes … Continue reading

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HiRISE: Wrinkle ridges and pit craters

Tectonic stresses highly modified this area of Ganges Catena, north of Valles Marineris. The long, skinny ridges (called “wrinkle ridges”) are evidence of compressional stresses in Mars’ crust that created a crack (fault) where one side was pushed on top … Continue reading

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THEMIS: Terra Cimmeria

THEMIS Image of the Day, April 16, 2015. Today’s VIS image of Terra Cimmeria shows two channels intersecting to become one larger channel. More THEMIS Images of the Day by geological topic.

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HiRISE: Blocks and wrinkle ridges

Beautiful Mars series. Blocks and wrinkle ridges in Aethiopis Region. More Beautiful Mars images.

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THEMIS: Tartarus Colles

THEMIS Image of the Day, March 20, 2014. The hills in this VIS image are part of Tartarus Colles. Several of the hills have dark slope streaks, believed to be formed by downslope removal of dust revealing the darker rock … Continue reading

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HiRISE image: Craters, dunes, and ridges in Nili Patera

Beautiful Mars series: Craters, dunes, and ridges in Nili Patera’s caldera.  More Beautiful Mars images.

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Dikes: key link between Thaumasia Planum, Tharsis, and Valles Marineris?

The area called Syria-Thaumasia is a big triangular block of Mars just east of three giant Tharsis volcanos: Arsia, Pavonis, and Ascraeus Montes. Valles Marineris bounds the block on the north, while its southwest and southeast sides are defined by … Continue reading

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