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originally posted by: Rodinus
originally posted by: whatsup86
You all know they call us nutters because of these threads dont you?
Thanks a lot.
This thread should be called: when a rock is not a rock? When its a rock on mars.
Congratulations for denying ignorance...
May I ask why you originally decided to become a member of ATS?
Kindest respects
Rodinus
originally posted by: Ophiuchus 13
Are these areas circled in blue showing signs of MARS soil seeping / falling into something beneath?
A concretion is a hard, compact mass of matter formed by the precipitation of mineral cement within the spaces between particles, and is found in sedimentary rock or soil.[1] Concretions are often ovoid or spherical in shape, although irregular shapes also occur. The word 'concretion' is derived from the Latin con meaning 'together' and crescere meaning 'to grow'. Concretions form within layers of sedimentary strata that have already been deposited. They usually form early in the burial history of the sediment, before the rest of the sediment is hardened into rock. This concretionary cement often makes the concretion harder and more resistant to weathering than the host stratum.
There is an important distinction to draw between concretions and nodules. Concretions are formed from mineral precipitation around some kind of nucleus while a nodule is a replacement body.
Descriptions dating from the 18th century attest to the fact that concretions have long been regarded as geological curiosities. Because of the variety of unusual shapes, sizes and compositions, concretions have been interpreted to be dinosaur eggs, animal and plant fossils (called pseudofossils), extraterrestrial debris or human artifacts.
originally posted by: Adaluncatif
If you look at the original image you notice that the pile of debris has been covered up with dirt that is darker than the surrounding dirt, just as it would look if you covered up something with fresh dirt out in a barren field or desert on Earth, fresh soil with more moisture. It seems to me they used the rover to cover this up with dirt.