Exclamation Mark on Mars !

[Zip Monster]

Here is a MRO HiRISE image (ESP_020794_1860) of a large geometric structure on Mars.

The massive structure appears isolated on a flat empty plane. Notice the symmetry of the structure. The sides of the structure appear to have straight edges that run down to a large circular "dot" formation at its base...suggesting an exclamation mark design.


If you can't see it...turn this image sideways (so North is to the right)

The UA HiRISE team says the straight edges may be the result of fractures, related to faults or a hill that was lifted up by the faulting and its current shape was the result of the surrounding terrain having been eroded down over billions of years...

Image source: www.uahirise.org/ESP_020794_1860

Zip Monster

[Zip Monster]

Here is a view of the so-called "Exclamation Mark" or wedge and dome-shaped formation when rotated 90°.



Note, despite extensive erosion over the structure, the formation exhibits remarkable symmetry.

Zip Monster

[Marsrocks]

Interesting.

Notice on the south side of the mark shape we have a collapsed pyramid. The collapse of the pyramid is consistent with the collapsing side of the mark:

[Marsrocks]

There is a circle shape (inside of a square shape) on the north side of the collapsed wall of the mark:

[Marsrocks]

There are a number of dome shapes in a line just north of the mark.

This one has a disc shape high and near the middle of this pic:

[Marsrocks]

Far south of the mark, there is another disc shape near a crater - that seems to be in the caved-in mouth of another dome shaped hill:

[Zip Monster]

If a demarcation line (labeled i ) is placed above the ridge line between points, a and c, of the wedge formation and brought to extend down through the base of the dome formation - ending at J, the symmetry of the formation becomes noteworthy.



Looking at the parallel sides of the wedge-shaped formation, they appear as straight ridges that run down to a truncated base at an angle of 30 degrees... on both sides (Note points a-b and c-d).

The lower ridge line extending from point a to point b are parallel to the upper ridge line that extends from point e to point d.

The adjoining upper ridge line, extending from point f to point h is parallel with the lower ridge line extending from c to point d.

The large dome-shaped formation, located directly below the wedge-shaped formation appears to be a partially collapsed, circular dome. Notice the crevice across the center.

The big question is - how do you explain the formation of these two opposing formations? How could wind or water erosion create the wedge shaped formation, moving along the sides of the wedge form from point a to b - without destroying the dome-shaped formation adjoining it?

Zip Monster

[Marsrocks]

My measurements - using the grayscale JP2 - the label indicates .5 meters per pixel for that image MAP_SCALE = 0.5 <METERS/PIXEL>

hirise-pds.lpl.arizona.edu/PDS/RDR/ESP/ORB_020700_020799/ESP_020794_1860/ESP_020794_1860_RED.LBL


Note the caption at Hirise indicates .55 meters per pixel for the "original image" - which I assume is the raw image and not available from the hirise page).

These are the measurements I have for it:

[Marsrocks]

There are a few surprises on the dot end of the exclamation point.

In this dark area, there is a possible large rectangular opening:

[Marsrocks]

The rectangular opening is close to a very ruinous looking area at the extreme end of the dot:

[Marsrocks]

And this really caught my attention.

Looking in the area between the dot and the rest of the exclamation point, there is a truly massive - smooth flat - geometrically shaped block:

[Zip Monster]

marsrocks, thanks for the measurements of the wedge and dome formations. I really appreciate your effort. You really provided a lot of interesting features to study over the weekend, especially the geometrically shaped block.


WOW.

Zip Monster

[Marsrocks]

Thanks. That geometric block is really out of place in this scene. It appears to be in some sort of shallow crater - and yet it is undamaged. I can't explain that, as whatever blasted the crater, should have damaged a stone block. I would love to get a geologist's take on the block - it is yet one more thing that is seriously out of place in this odd scene.

[morbius]

Zip Monster, hello. Something slammed into the sands of Mars and was quickly obfuscated. The US has triangular-shaped Aurora Class anti-gravetic craft .. some of incredible size. Just a thought/see attached

Marsrocks: A quality research .. well written and presented. Your ' shaped-block ' caught my attention some, so did a work-up on it. Although at an extreme level of resolution there are found many people at this site/see attached/-M
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Attachments:

[Marsrocks]

This feature lies between Libya Montes (Crown face area) - and the hoped for landing site of Beagle 2 (UK) that failed during descent in 2003.

Here are some other views from google earth:

The big picture:



A reverse exclamation point (going down instead of up) nearby:






Views showing the flow of the ancient channel that went around it:









CTX view: