Tag Archives: clays

HiRISE: Clay deposits in the Southern Highlands

Clay deposits in the Southern Highlands. Beautiful Mars series.

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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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HiRISE: A closer look at Holden Crater

Holden Crater in southern Margaritifer Terra displays a series of finely layered deposits on its floor (white and light purple in an enhanced color image). The layered deposits are especially well exposed in the southwestern section of the crater where … Continue reading

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More recent clay formation on Mars?

Clays and other minerals formed when rocks are altered by water have been found in multiple locations on Mars. It’s been assumed that these minerals probably formed in the earliest Martian epoch, over 3.7 billion years ago. But a new … Continue reading

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HiRISE: Clays exposed by an impact

Clays exposed by an impact in Tyrrhena Terra  — Tyrrhena Terra is south of the Martian equator and immediately northeast of the giant Hellas basin. Beautiful Mars series.

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HiRISE: Possible phyllosilicates in a butte remnant

Possible phyllosilicates in a butte remnant. Beautiful Mars series.

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HiRISE: Possible phyllosilicates in Nirgal Vallis

Possible phyllosilicates in Nirgal Vallis. Beautiful Mars series.

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HiRISE: Clays exposed on Ladon Valles basin floor

Clays exposed along Ladon Valles basin floor. Beautiful Mars series.

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HiRISE: Clays along the Coprates Chasma plateau

This image shows exposures of deposits along the plateau just to the south of Coprates Chasma. Whereas Coprates Chasma and many of the other chasmata of Valles Marineris contain kilometer-thick light-toned mounds made up of… [More at link]

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HiRISE: Possible clays along Lorica Crater wall

Possible clays along Lorica Crater wall. Beautiful Mars series.

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