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originally posted by: qmantoo
Cracks do not end with a rock. Cracks in bedrock would soon get covered by the light winds blowing dust particles around. These tracks have a rock at the end of each.
originally posted by: qmantoo
Cracks do not end with a rock. Cracks in bedrock would soon get covered by the light winds blowing dust particles around. These tracks have a rock at the end of each.
originally posted by: Bilk22
What I find curious and have not seen an explanation for is, how did the boulders form? The landscape is replete with boulders and rocks. These usually come from much larger rock formations that have fractured due to a force, that being tectonic or from water. How did all these boulders and rocks form on Mars? Something just seems odd about that landscape.
Now how do they know it was a large lake? LOL
originally posted by: wildespace
a reply to: teamcommander
The Gale crater where Curiosity is used to be a large lake, and many rocks there have been shown to be sedimentary or formed in the presence of water. Add to that wind erosion, quakes, and meteorite strikes, and you get lots of broken rocks and boulders everywhere.
Yes but how do they know they're "sedimentary layers" and that they're "sedimentary layers" from a lake? What proof is there that water existed on Mars?
originally posted by: Phage
a reply to: Bilk22
Because sedimentary layers form in bodies of water. The sedimentary layers of Gale Crater were observed from orbit. That is one of the primary reasons it was chosen as the landing site for the MSL in relation to its mission of learning if conditions on Mars in the past were suitable for life. An ancient lake would be a good place to look.
cosmicdiary.org...
It was a legitimate question. Here's another, where did the H2O go? If it evaporated, wouldn't it reside in the atmosphere?
originally posted by: Phage
a reply to: Bilk22
A student of geology are you not, see I.
I suppose those silly geologists who carefully studied the orbital image were just imagining things or are stupid or are deluded. I suppose you have a better explanation for such extensive and even layering.