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Marathon Valley, Sol 4078-4481 (July 15, 2015 - September 1, 2016)
ngunn
post Aug 11 2015, 10:11 PM
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Oops - I thought the previous one was an anaglyph because it has coloured fringes on the skyline. Anyway both are much appreciated.
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algorithm
post Aug 12 2015, 06:43 PM
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Now that's exactly what I meant by somebody else making a better job of it!! laugh.gif
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algorithm
post Aug 16 2015, 07:07 PM
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PanCam views of the other wall (North facing I believe) of Marathon valley on Sol 4108




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algorithm
post Aug 16 2015, 07:09 PM
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And as an anaglyph.




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ngunn
post Aug 16 2015, 09:29 PM
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Very nice! Can anyone shed light on whether these are depositional layers, parallel erosion surfaces or something else?
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eliBonora
post Aug 19 2015, 07:31 AM
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Mosaic sol 1408



and HazCam in color, left and right, sol 4107 (using the variations of light as filters)



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vikingmars
post Aug 19 2015, 07:36 PM
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QUOTE (eliBonora @ Aug 19 2015, 09:31 AM) *
Mosaic sol 1408

WOW ! Thanks a lot eliBonora for sharing this nice work of yours ! smile.gif
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atomoid
post Aug 19 2015, 11:42 PM
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yes nice treatment! the parellel slightly exceeds my interpupilary distance on my monitor, making that one challenging but i am finding that its indeed possible to train the eyes to diverge unnaturally. Here are a crosseye and anaglyph of the brushing (09 CCW rotated).
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atomoid
post Aug 24 2015, 08:51 PM
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sol4117 marathon boulders at dusk
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fredk
post Aug 27 2015, 04:13 PM
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It looks like we may be heading into those boulders next, according to Crumpler's blog.
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atomoid
post Aug 27 2015, 07:18 PM
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..Crumpler curiously calls them "dark float rocks", or perhaps that's just a parcel of geologic nomenclature.. i'm inferring they haven't yet definitively spotted smectite from pancam data and are relying on low res orbital data and best hunches to pick the prospective targets to get a profile.. here's Larry's rendering in native resolution:
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elakdawalla
post Aug 27 2015, 07:42 PM
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"Float" is a term for rocks that have broken from their source rock, so they're no longer in place; they lack context (except that they probably originated upslope). Geologists prefer to analyze bedrock rather than float when they can, but the rovers are often forced to look at float rocks rather than outcrop higher up because of terrain trafficability issues. What they do try to do is find float that hasn't traveled far, where you can see the scar that it left behind on the outcrop so you be reasonably sure you know its initial position and orientation.


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centsworth_II
post Aug 27 2015, 09:43 PM
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I was surprised to see that the area of smectite detection by CRISM shown in Crumpler's blog encompasses the floor of the valley almost to the exclusion of the bordering layers of bedrock. But maybe the resolution is such that a distinction cannot be made and the outline around the valley floor is misleading if taken as a hard fact.
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ngunn
post Aug 27 2015, 09:53 PM
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Larry Crumpler's field reports are always very informative but this one excels in the amount of information in the illustrations. We even have the angles of dip in the foliations within the rocks in view. Foliation, if I'm not msitaken, is a word for layers in rocks where it seems unlikely that they're sedimentary layers.
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Floyd
post Sep 9 2015, 12:53 AM
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Opportunity is still alive and exploring Marathon Valley. Seems like UMSF has sort of ignored her for the past two weeks.

The monthly report by A.J.S. Rayl came out 9/3 Link


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