Subject: APF0000hdp
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by Trachy
This is surreal! Maybe red sandy hillocks with white boulders scattered on the surface....looks like 'modern art'!
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by Tod55
Looks like farmers fields!
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by AstroToy
Could that be a massive lava field?
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by kittymay
it amazing 😄
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by Sonicgroove
Like lots of pilsbury doughboys squashed together 😄
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by zalkwe
Iron oxide,red sand may be
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pretty nice actually
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by Mutantoe
Probably Iron Oxide. #whatelement
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by 01005
Looks like there are tons of #fans in there!
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by pocketmoon
the fluffyness is an optical illusion caused by the #fans venting along fissure. The terrain is flatish
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by michaelaye scientist
Very perceptive, pocketmoon, and true. Especially, because everything is covered by a rather smooth layer of ice here. 😉
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by Geogirl
Interesting lines
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by leeleelee
looks like skin at this res
also looks like base of glasier when ice gone some of boulders are in one end of scratch
right to left movementPosted
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by michaelaye scientist
These lines are #cracks in the CO2 ice layer and the fans erupt through these cracks!
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Just Saw it on the show , They move apprently
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martian brain!!
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by MyC0w
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reminds me of my allotment garden mud/soil after the rain flatten the ground then period of dry has cracked and lifted edges.
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by iansonuk
If the ice is cracking due to residual seismic activity or tidal stresses from the moons?
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by pyr0pixie
I think i have come across this same formation but frozen over in my collection...it has the same angular markings but with ice channels
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by Langshaw7
Is this some form of sediment that has accumulated on top of the glacier below?
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by simonedi
http://preview.tinyurl.com/asmjzlt cracked earth permafrost... looks a lil similar to me. freeze in winter and new cracks form in summer?
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by AndyBarton
Thin layer of Co2 ice covering trapped Clouds of Co2. Black areas where the Co2 clouds are at its thinnest,showing up as lines of darkness.
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by jack9515
This looks like there was a large layer of sand that has fallen down into crevices in the surface.
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by 4_eyes
Reminds me of the lakes on greenland ice sheet just coloured red due to the dust. The Greenland lakes also move over time.
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by GregS
Dark lines appear to be lows, where trapped gas has escaped and land surface has subsided. Perhaps lows then accumulate darker, heavy mins?
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by LittleAl1974
Not only do the dark lines look interesting but the general texture does too. It is almost like a layer of sand with an erosion pattern.
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by paulevos
I believe it is the beginning of a root like region caused by hot fluid build up, once it builds up enough it will collapse leaving a cavity
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by peter_werner
This looks like a part cooked collapsing sponge cake. Surface softly crusted. Either gas has escaped or trapped gas is refreezing?
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by fabrocks
looks like fork markings after pastry baked?? as if surface has risen and expanded??
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by daneellard
A (thin, malleable) surface previously "inflated" by pressure from below; now partially collapsed back down after having been "stretched"
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by daneellard
OR a surface buckled by lateral pressure.
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Reminds me of pillow lava
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by saltski
This has small dunes on top of these massive features. underground frozen matter that has melted leading to collapse?
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by asmedley
? dust / small particles crusting bubbles beneath hence slight hexagonal shapes
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by danieljeory
This reminds me in some ways of a limestone pavement structure, similar to The Burren in the west of Ireland. Perhaps these are porous rocks
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by daneellard
Some broadly similar terrestrial images are here
http://www.math.utah.edu/~sfolias/harveyhalpern/mud/?i=2Posted
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by stacey888
brainey lol
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by Pseudo_Pro
It looks like the Tundra areas around the East Siberian Sea. https://maps.google.com/?ll=74.519889,142.734375&spn=5.05627,26.125488&t=h&z=6
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by rturner21
looks like there are striations along the top. looks sandy. could it be like a sand storm over the top of glaciers?
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by ianbutton1
What is the distance across the picture, please?
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by Pseudo_Pro
I think on stargazing live they said approx size = 2 rugby fields.
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by FarmBoyDai
optical illusion, its a flat surface with dust particle blotches/fans making it look like dunes.
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Could these be bed's of under surface Co2 ice that when sublimates creates a Air Hockey type of situation?
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by mach2k5
Unstable ground due to subsidence, possibly due to the release of ice being released leaving a void beneath
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by Welshray
It looks similar to when you let the air out of a balloon after its been inflated for a few hours They don't return to there original shape.
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by watsonglv
These features resemble convection cells which naturally trend to hexagonal forms. The central feature is a vent relieving thermal pressure.
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It's possible to speculate that the formation could be some type of unknown permafrost glacier. the shapes cause by spring melting the frost
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by Subtle_Knife
Can we see a sequence for this location? #request
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by Geogirl
Regular pattern makes me think of geological tension fractures, but no tectonic plates on Mars.
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by Marco_Mentil
Tundra polygons formed on Earth by freezing and thawing of vertical ice wedges. CO2 may have similar effect, except without a liquid phase
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by gepisar
Seems similar to "Chocolate Hills", Bohol near Cebu, Philipines. Maybe with different gravity and pressure, the formations are closer.
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by reggeaman
MAY BE WERE WATER RIVERS LAKES WERE HENCH THE ICE STILL IN THE AREA.
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by alan.overend
maybe the gravitiational force of the moons induce regional stress which when released creates tension cracks? 2 moons = two fissue sets
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Would be interesting to try look at the historical development of the apparant fractures in the centre of the blocks. Previous 1' features?
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underground structures are needed to be elaborated
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by brianO
Agree with Marco Mentil. I've seen similar patterns on Svalbard formed in permafrost sediments by thermal contraction and expansion. The polygons are 10 to 40m across and the ice wedges at the boundaries can be 1m across in the upper section and penetrate a few metres into the ground. Polygons can be sorted or unsorted depending on the homogeneity of the sediments. The cracks near the centres of the Martian polygons could possibly arise from the venting of sublimated CO2 during the summer.
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by dave.rooney
i think it is lava tubes that have caved in while a large underground glacier moves underneath
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by geo-topics
Could correspond to decompression figures of plutonic mass with ball erosion along diaclase network
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by doug67
I'm only just getting into this scientific stuff but does anyone else think that this picture looks like a large body of frozen crystal clear liquid?
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by oliverbrown
It could be frosen CO2 with minerals in to make it coloured, and the black lines could be subliming CO2.
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by maryceleste
Something like Giant's Causeway?
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by mechanoid
Flat surface, black material erupting from fissures without wind to disperse. Shallow top lit ripples extend across "deep" fissures .
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by oliverbrown
Permafrost could freeze it then solar winds that breach the marsian atmosphere could scorch the lines in and the frozen material sublimates.
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by lucy83
looks like giant coral
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by Bridgewilks
Could be sinkholes, as we don't fully understand the substructure, the black holes and cracks could be the surface sinking due to movement.
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by MoonSquirrel
While at first glance it looks like a wavy, brain like landscape the more you look the flatter it becomes, with the "cracks" as vents above.
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by alex98
They could just be valleys caused once existant rivers or perhaps glaciers
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by michaelaye scientist
@MoonSquirrel Good! You getting adapted!
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by Shread
It's an opticle illusion! It bold and bubbly but really its a flat surface. Weird!
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by jdt79
WOW great pic
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by cblack
Similar to limestone areas that I've seen at Malham and in the hills of Crimea in the Ukraine
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by AlexRhodes88
Rock formation clints and grykes? Eg Malham cove, UK. http://en.wikipedia.org/wiki/File:Limestone_pavement_above_Malham_Cove.jpg
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by ianbutton1
Just flat - red dunes with black material fanning from vents along linear cracks. On some sideways shots you can see plumes as well as fans
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by poplar11
looks similar to limestone pavements apart from the colour
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by mhodgkins1
Like sand blown over a cracked glacier. Striations in the sand in prevailing wind direction and white spots where ice peaks are revealed.
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by dombledore
I found this one which is similar ~ the plumes follow along lines:
http://talk.planetfour.org/#/subjects/APF0000hto
different landscape
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by bukrojers
Got 3D quality but I think depressions are shallow and tonal graduations are dark deposits giving that impression. Ancient lava pillows?
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by pbedding
Could be cracks in the top layer of dust/rock, as the substratum (water or CO2 ice?) expands or contracts with changes in temperature?
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by Dr_Monster
I agree it's probably flat. Fine dunes and white stones straddle dark vertical "fissures". Spray from vents gives 3D curved effect.
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by Mbizz0
Similar to Image APF0000hca
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Looks like sediment under liquid, like looking at shallow water
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This seems to be a maze of fractures, with many plumes. If the top of the image is north,perhaps the wind here is from the SSE to NNW.
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The fractures which are more east west seem to have many fine short plumes originating from them.
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The larger darker zones seem to me to be blotches that have drifted a little NNW, as can be seen from the dark areas having diffuse edges.
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Ah yes, I see your comment Dr Monster, I think you are saying the same thing
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by dudeloo
#It looks like old cracks to me
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by dudeloo
It looks like old cracks to me
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by dudeloo
I'm quite confused
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by stello1972
The Brain from Mars!
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by kipper123
this is a flat red feild, the fans of darker colour give the impression of curves ? optical illusion.
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Looks like ravines
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by carllindley
Looks like clouds of material comming out in the dark items then the roof collapses after it has all been ejected
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by LucyPlayford
This looks somewhat like a quilt, the lines look like stitches. But this might be an optical illusion. Perhaps these stictches are cracks?
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by LucyPlayford
Is the transverse texture like the pattern on a sandy beach? Are the white dots rocks?
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I think there might be some fans
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by SignPig
Could the lines be made by multiple short lived tornadoes of gas and ice engraving the surface?
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by matywaldy
"ITS LAVA JIM,BUT NOT AS WE KNOW IT".
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by Muse2k8
I've posted a working theory in the Science section to the right. Please have a read.
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by michaelaye scientist
Black lines are cracks in the ice, through which CO2 jets have transported dust and sand to the surface.
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by michaelaye scientist
the white dots are probably dents in the CO2 ice layer.When the inside of icy dents lean toward the sun,they reflect a lot more light.
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by jackiekins
Could the black lines be pools of water?
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by michaelaye scientist
nope
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by Fiona_Firth
This could deep gorges as in the Grand Canyon and possibly have been large amounts of water erosion
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by ridela
almost look like deep ocean black smoke stacks.
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by WinterBoy01
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by alan_of_ose
does the white dots moves around and how do they stick to vertical sides of the crevases
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by Rockykrys
There are no crevasses. That's an optical illusion caused by dark-coloured debris deposited on a flat surface. Just finer cracks/fissures.
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by alan_of_ose
the white dots have no shadows and are nearly all the same size
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by alan_of_ose
it could be lava cooled very quickly [ giants cawesway or staffin cave
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by nickpop
Higher resulution images could make this look quite different.
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by dottosian
It could be from glacial activities a long-time ago and the features have changed maybe?
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by cuttelld
pillow lava and fan dust has got into the folds
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by SuzieFearon
Fans sitting under a layer of CO2 frost? Some white spots/reflections appear to sit over the dark features. Surface refroze post deposits?
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by tonnie1
Yes, not 3-D wormy things at all - fissures on a flat surface, I think. The eyes play tricks!
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by plasmafire23
'Mars-brain'? No, I think it's flat - the impression is created by shading of a flat landscape caused by emissions from fissures.
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Could these be bacterial mats formed in pre-history in water stained with iron?
Akin to stromatalites found on earth?Posted
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by Markconx
#Vibration pattern perhaps? combination of #lava flow and other #seismic activity ?? #interference #wave - Example http://goo.gl/fErWK ???
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by Michael97F
I think it's simply a flat surface with fans and blotches which are fooling the eyes into thinking it is round.
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by Jegory
I agree with some of the others who've said that its a flat surface. If you look at it closely the shadows have the same texture as the rest
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by Jegory
...So they're not actually indentations, in my opinion.
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by michaelaye scientist
These are cracks in the CO2 ice layer. Pressurized CO2 gas transports dust through the cracks.
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by Owen679
the same fan black dust explosions as the rest but I think they explode out of underground rivers I've seen the same pattern in other pics
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by PerryF
Similar features on Earth: Russia 68.5, 32.7 Norway 69.6, 31.0 Greenland 60.7, -46.6; 64.5,-52.0 and most similarly Russia 77.0, 105.4
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It reminds me of that state when mud is drying, has crinkled but has not actually cracked.....?
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by Jimbo25
Possibly frost patterns, similar to those that form on a a damp pane of glass, but not H20, dark colour coming from trapped dust.
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by g480jones
image APF0000hdp would appear to be some kind of membrane inflated by Co2(?)
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by op19
Strange formations?, and what are the white dots?
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