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Phage
reply to post by TBrains
An avalanche is a fall of any material; rocks, sand, ice.
Maybe a landslide then?
www.thefreedictionary.com...
For all we know it's dust.
Either way, I am dying to know what that lake is made off. Hell for all we know it can be oil. Can you imagine the chaos it would be to get there first?
That would be awfully expensive oil by the the time you get to Mars and bring it back.
edit on 10/13/2013 by Phage because: (no reason given)
TBrains
Either way, I am dying to know what that lake is made off.
The walls of Hebes Chasma weather differently than the slopes on the mesa on its floor. Also, studies of the thermal inertia suggest that the mesa and the walls of the canyon are made of different substances. Thermal inertia is how long the surface holds heat. For example, rocky areas will stay warmer than dust at night. One popular idea that explains the difference between the depression's walls and the mesa slopes is that the mesa was formed from material that accumulated in a lake.
At first glance, this dark patch on the northern side of the mesa looks like it might be a lava flow. But THEMIS data show it is more likely a flow of loose, medium-size particles, probably dark basalt sand grains. It lacks the thermal properties of solid rock, which would be the case with an actual lava flow.
A puzzle remains, however, regarding what caused this loose material to flow from the mesa. It could have begun sliding due to cracks in the layers making the slope unstable. But another possibility is that a small outburst of groundwater or melting ice weakened the rocks, making a debris slide more likely. What are the chances of this happening?
Water definitely pooled in parts of Hebes long ago. Data collected by the OMEGA spectrometer on the European Space Agency's Mars Express orbiter identifies places in eastern Hebes that are rich in sulfate minerals. These form by the interaction of water and rocks.
But whether the origin of this dark flow is wet or dry remains an open question for now.
Xeven
Nasa should land a Rover in a canyon.
That is where ou will find life not in a crater where an asteroid obliterated any evidence of life.
AthlonSavage
reply to post by NoRulesAllowed
This just proves that Nasa takes hugh definition pictures of Mars and that they are very careful for which ones they give out the public
TheAnarchist
I'm just kidding. I'm sure the guys at NASA work really hard to get these photos. I for one appreciate them. It's a groovy time to be strange & alive!
ArMaP
Xeven
Nasa should land a Rover in a canyon.
Landing in a canyon has higher probabilities of going wrong than landing on a huge flat space.
That is where ou will find life not in a crater where an asteroid obliterated any evidence of life.
The latest NASA rover, Curiosity, is on a crater that was apparently once filled with water and enough material to make a 5.5 km high mountain.
Xeven
Either of us could be right. I am betting the first life old or still alive will be found in a canyon on mars and not in a crater. Will talk again when they land in a canyon!
Phage
The words "perspective view" indicate that the image has been manipulated and overlayed on a terrain model, like what Google Earth does. This is the image which was used:
The details of the central mesa inside Hebes Chasma are seen in close-up detail in this perspective view.
The resolution of the image is about 15m/pixel.
Soylent Green Is People
UpEndedWorld
VoidHawk
NoRulesAllowed
A square crater?
Indeed! Someone needs to prove that this is not a computer generated rendering,
similar to those used in manys a sci-fi movie!
NASA are not to be trusted. Simple as!edit on 11/10/2013 by UpEndedWorld because: format
Maybe there is also an impact crater component to that terrain, but I think it looks like a canyon. Perhaps the canyon can sometime after the nearby crater rim was produced.
And square canyons are not terribly uncommon. Here is one I found near the Grand Canyon here on Earth:
wildespace
TBrains
Either way, I am dying to know what that lake is made off.
Looks like dark sand to me. You can see lots of it in other parts of the Hebes Chasma: spaceinimages.esa.int...
Here's the source of the spill that created that "pool". You can clearly see that it's dark sand that has some ripples/dunes:
And here's a closeup of the "pool", which looks nothing like a body of liquid at all, more like the said sand spread over the lighter terrain:
This dark bluish sand can be found all over Mars, including at the foot of Mt Sharp where Curiosity rover is currently operating.
I have yet to see what could be conclusively taken as a body of liquid on Mars. Besides, sand can behave like a liquid in certain circumstances, i.e. flow, ripple, spill over, etc.
Xeven
Nasa should land a Rover in a canyon. That is where ou will find life not in a crater where an asteroid obliterated any evidence of life. NASA supposed to be smart but they really are stupid when it comes to common sense.