Tag Archives: clay minerals

HiRISE: Clay-rich terrain in the Eridania Basin

HiRISE reveals small-scale shapes that often correlate with mineral units and provides information about stratigraphy (i.e., what’s on top and relative ages). This image was acquired for co-analysis with a spectrometer instrument also on our spacecraft called CRISM (Compact Reconnaissance … Continue reading

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HiRISE: Uncommon clay

Uncommon clay. There are some uncommon clays in this sedimentary plain, as first detected in low resolution by the OMEGA instrument on the Mars Express Orbiter. Note the tight cluster of impacts. This image is in the Terra Cimmeria region … Continue reading

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CRISM: Hydrated minerals of Cydonia Colles

In this scene we observe the knobs within the northern lowlands (Acidalia Planitia) that are Fe/Mg phyllosilicate-bearing (pink-blue) and small, patchy exposures of hydrated silica (green) surrounding the knobs. Previously, phyllosilicates have only been found within impact craters in the … Continue reading

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HiRISE: Looking at martian salts and clays

This 3D perspective view is a composite of both HiRISE and data from CRISM, another instrument onboard MRO. This view covers a small patch of ancient Martian real estate in Terra Sirenum. CRISM collects spectral data that can be used … Continue reading

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Phobos & Deimos likely formed from big impact on Mars

[Editor’s note: From a paper by Timothy Glotch and seven co-authors recently published in the Journal of Geophysical Research.] MGS‐TES Spectra Suggest a Basaltic Component in the Regolith of Phobos • Mars Global Surveyor Thermal Emission Spectrometer spectra of Phobos … Continue reading

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HiRISE: Clay outcrop near Maja Valles

A clay outcrop near Maja Valles. Maja Valles is a large, ancient outflow channel in the Lunae Palus quadrangle on Mars. The name is a Nepali word for “Mars”, and parts of the system have been partially buried by thin volcanic … Continue reading

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HiRISE: Clays in the Eridania Basin

This colorful image shows clays within the Eridania basin region. Many scientists using orbital data have proposed that a large lake may have once existed here during the Late Noachian through Early Hesperian time periods, and then much of the … Continue reading

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Mars minerology points to cold, icy ancient climate

The climate throughout Mars’ early history has long been debated – was the Red Planet warm and wet, or cold and icy? New research published in Icarus provides evidence for the latter. Mars is littered with valley networks, deltas and … Continue reading

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HiRISE: Clays in a grouping of small craters

Clays in a grouping of small craters. Beautiful Mars series. [More at links]

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Stepped fans and phyllosilicates on Mars

Planetary Geomorphology Image of the Month, April 1, 2018: Peter Grindrod (Natural History Museum, London, UK). A number of different studies have catalogued features on Mars that could be given the general heading of sedimentary fans… These features occur whenever … Continue reading

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