67P/Churyumov-Gerasimenko. A Single Body That’s Been Stretched- Part 30


Upper red line- the head lobe rim shear line.

Lower red line- the body lobe shear line.

From the first picture in the new OSIRIS archive, released today, 11th December 2015.

UPDATE (14th December):


The shear line itself is, I think, very accurate for this distance. The intermediate pale orange layers can’t be 100% exact but I think they’re pretty close due to cross-checking lots of features. Those check features are either annotated here or less important and left unannotated. The less important ones are still useful as landmarks and pointers. 


Red- these are the two outermost long lines and they are the main shear lines on both head and body. Notice how the two lines appear to mirror very subtle kinks such as a bump on the left arm of the V and two sharp divots on the right arm. 

Pale orange- intermediate ridden-up layers. 

Orange- back perimeter of the deepest discernible layer. Its front perimeter sat against the bottom of the shear line. Orange also depicts the concertinaed-out ‘V’ on the body. This might be just one layer that’s been stretched and developed crevasses rather than several delaminated and ridden-up layers as is the case on the head. 

Light blue- shear line dyke outlets. They’ve delaminated as the successive ridden-up layers carried them up with them. The blue dots on the true bottom head rim (as opposed to the red shear line above it) are half guessed but nevertheless using the orange line and yellow dots plus visible ‘teeth’. These blue dots fit to the base of the shear line on the body and are much closer together like their counterparts on the body. The lines of blue dots on the upper layers have stretched out with the recoiling of the layers or flared/fluted as the gases escaped up the long crevice at the shear line. The base of the shear line at this point is at least a couple of hundred metres deep. You can see the steep, shadowed cliff. 

Green- outlets or sink holes.

Yellow- additional matches just inside or outside the shear line. 


Pink is an isolated line which was suggested by Ramcomet as the seating for the yellow match. My choice is the upper line due to the topology of the nesting and mini matches around and within the body yellow line (careful scrutiny needed here for what would otherwise appear to be a facile match). 



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