Tag Archives: phyllosilicates

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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Opportunity: Mini-mesa in the valley

Sol 4415-16, June 25-26, 2016. This little flat-topped feature, a mini-mesa sitting on the floor of Marathon Valley with the profile of a tree-stump, is probably an erosional remnant. The Navcam composite view was taken on Sol 4415 and looks northward … Continue reading

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Opportunity: York target, post-brushing

Sol 4112, June 22, 2016. Opportunity is currently in the middle of one of the clay mineral areas spotted from orbit by the CRISM spectrometer on the Mars Reconnaissance Orbiter. The target area the rover is examining is dubbed York, … Continue reading

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Opportunity field report, June 20, 2016

Sol 4410, June 20, 2016; Rover Field Report by Larry Crumpler, MER Science Team & New Mexico Museum of Natural History & Science: Opportunity is finishing up its activities here in Marathon Valley on the western rim of the 22 km-diameter … Continue reading

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Opportunity: Where we’re at

Sol 4379, May 19, 2016. The rover is slowly exploring the head of Marathon Valley, where the rocks show evidence (detected from orbit by CRISM) of alteration by water, which produced clay minerals. This Navcam view (click to enlarge) looks … Continue reading

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Opportunity report by A.J.S. Rayl, The Planetary Society

May 10, 2016: Opportunity Sleuths New Site for Smectites: After capturing a rare image of a dust devil whirling through the interior of Endeavour Crater at the end of March, Opportunity and the Mars Exploration Rovers (MER) team pressed on … Continue reading

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THEMIS: Nili Fossae – false color

THEMIS Image of the Day, April 27, 2016. Today’s false color image shows part of Nili Fossae. The THEMIS camera contains 5 filters. The data from different filters can be combined in multiple ways to create a false color image. … Continue reading

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Opportunity: Looking downslope

Sol 4338, April 7, 2016. After shooting the view upslope on Sol 4337, the Navcam continued its panorama from north (left side) through east to southeast (right). One frame from Sol 4337 (third from right) links the left and right … Continue reading

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Opportunity: Seeking clay minerals

Sols 4335-6, April 4-5, 2016. After driving back closer to the head of Marathon Valley, where slopes are not as steep, Opportunity’s Pancam has shot a series of filtered images to identify likely outcrop targets to examine closely. The warm-tinted … Continue reading

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Opportunity: Moving higher for firmer ground & clay minerals

Sol 4323, March 23, 2016. Opportunity is exploring Marathon Valley because orbital spectrometry found exposures of water-altered clay minerals in the valley. But with the ground proving too loose to allow Opportunity to reach its intended outcrop target at Pvt. … Continue reading

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