Tag Archives: sulfates

HiRISE: Possible jarosite on a plateau in Nili Fossae

Posted on July 31, 2019 by rburnham

Possible jarosite on a plateau in Nili Fossae. Recent analyses of CRISM data have discovered jarosite in this portion of the trough wall, possibly within a previously identified aluminum clay unit. Jarosite is a sulfate mineral also detected by the … Continue reading →

Posted in Reports | Tagged , , , , , , , , , , , , , | Comments Off

Layered-sulfates’ history in NE Syrtis Major

Posted on July 11, 2019 by rburnham

[Editor’s note: From a paper by Daven Quinn and Bethany Ehlmann recently published in the Journal of Geophysical Research.] The Deposition and Alteration History of the Northeast Syrtis Major Layered Sulfates • The eroded stratigraphy at Northeast Syrtis Major includes … Continue reading →

Posted in Reports | Tagged , , , , , , , , , , | Comments Off

Episodic upwelling and layered deposits in Kotido Crater, Arabia Terra

Posted on March 22, 2019 by rburnham

[Editor’s note: From a paper by Monica Pondrelli and six co-authors recently published in the Journal of Geophysical Research.] Groundwater Control and Process Variability on the Equatorial Layered Deposits of Kotido Crater, Mars • We mapped the Equatorial Layered Deposits … Continue reading →

Posted in Reports | Tagged , , , , | Comments Off

HiRISE: A layered mound in Juventae Chasma

Posted on February 22, 2018 by rburnham

Many of the chasmata (the plural of “chasma”) in Valles Marineris contain light-toned mounds that are distinct from the darker rocks that define the walls. The light-toned mounds, like this one in Juventae Chasma, generally contain sulfates, which are salts … Continue reading →

Posted in Reports | Tagged , , , , , , , , | Comments Off

HiRISE: Mixtures of sulfates in Melas Chasma

Posted on September 8, 2017 by rburnham

Many locations on Mars have sulfates, which are sedimentary rocks formed in water. Within Valles Marineris, the large canyon system that cuts across the planet, there are big and thick sequences of sulfates. In this image, layering within the light-toned … Continue reading →

Posted in Reports | Tagged , , , , , , , , , , | Comments Off

HiRISE: Prospecting from orbit

Posted on September 7, 2017 by rburnham

The combination of morphological and topographic information from stereo images, as well as compositional data from near-infrared spectroscopy has been proven to be a powerful tool for understanding the geology of Mars. Beginning with the OMEGA instrument on the European … Continue reading →

Posted in Reports | Tagged , , , , , , , , , , , , , | Comments Off

HiRISE: Possible sulfate and clay evaporitic deposit in Schiaparelli Crater

Posted on August 29, 2017 by rburnham

Possible sulfate and clay evaporitic deposit in Schiaparelli Crater. Beautiful Mars series.

Posted in Reports | Tagged , , , , , , , , , , | Comments Off

HiRISE: Sulfates in the northwest Hellas region

Posted on August 4, 2017 by rburnham

Sulfates in the northwest Hellas region. Beautiful Mars series.

Posted in Reports | Tagged , , , , , , , , , | Comments Off

HiRISE: The White Cliffs of ‘Rover’

Posted on June 16, 2017 by rburnham

This image reminds us of the rugged and open terrain of a stark shore-line, perhaps of an island nation, such as the British Isles. A close-up in enhanced color produces a striking effect, giving the impression of a cloud-covered cliff … Continue reading →

Posted in Reports | Tagged , , , , , , , , , , , , | Comments Off

HiRISE: Possible sulfates in Noctis Labyrinthus

Posted on June 16, 2016 by rburnham

Possible sulfates in Noctis Labyrinthus. Beautiful Mars series.

Posted in Reports | Tagged , , , , , , , , | Comments Off