Matijevic Hill first survey, Sol 3057 - 3152 Options

[Mars Attack]

Is it possible that Endeavor crater eventually filled up with upwelled water after the impact that created it and over time the crater wall in the area of Cape York eroaded away with the water spilling out into the plains? Would it not be prudent to investigate the bottom of the crater in this area to look at possible sediments that may have filtered out at this location?

[Phil Stooke]

I think it's more likely that we will be able to understand the stratigraphy of post-impact modification. The old rim of Endeavour was subjected to erosion and deposition, maybe multiple times, and remnants of those events are what we might expect to see here. Details of the original rim stratigraphy, especially things like overturned strata at the original rim (probably lost to slumping and erosion long ago) are not likely to be preserved.

Phil

[ngunn]

You may well be right, but I think the possibility that the Kirkwood layer is pretty much in situ since the impact cannot be excluded. The obvious chaos only appears upslope from Kirkwood. I'm sure the hunt is on for a possible continuation of the Kirkwood layer at Cape Tribulation.

[serpens]

Is it possible that Endeavor crater eventually filled up with upwelled water after the impact that created it ....? Would it not be prudent to investigate the bottom of the crater in this area to look at possible sediments that may have filtered out at this location?

Given the evidence of a groundwater table rising to the surface at the elevation of Erebus then there is a reasonable argument for deeper water within Endeavour. But north of Cape York the crater rim was overrun by sulphate sediments which form that intriguing delta like infill, so the crater bottom would probably be more yet sulphate sandstone with hematite concretion lag, covering all the interesting stuff beneath. I guess one question is whether the crater was once completely filled and then excavated to the current topography, or whether the infill reflects the configuration reached before the area became pretty well static. If the latter then the possibility of Endeavour having been a water filled stratigraphic trap would seem to be increased.

[ronald]

Falconbridge - Pancam Sol 3119:

Full version here and here. Partial anaglyph in this post.

[ronald]

This one - just labeled outcrop ejecta - will be a nice one too (3x1 when all data is down):

[ronald]

Now this is really the last one for today
Makada Lake, Pancam Sol 3124


I also noticed that the two colored ones above came out a bit too desaturated - at least looking at them from home now. At work it looked ok. I'll pay more attention to this in the future.

[Zelenyikot]

I welcome participants. Allow also to me to take part in discussion.

Surprising repeatability of forms. Rectangular structures under wheels of Opportunity http://qt.exploratorium.edu/mars/opportuni...EGP0142L0M1.JPG
and from the satellite:

[fredk]

The small-scale features are what the team calls the "boxwork" features, around the 3101 and 3103 sites.

We were close to the large-scale rectangular features/lineations/"tardis features" on sol 2742. We tried to spot them in the imagery, but saw nothing conclusive - check around this post.

[Zelenyikot]

Thanks. Yes, really from above it looked more interesting.

I, as the archeologist, can't quietly look at them

Attached thumbnail(s)

 

[Ant103]

Sol 3124 Navcam pan :

[ronald]

A look back on Sol 3124:

[Phil Stooke]

Ant103's pan in circular form.

Phil

[Phil Stooke]

This is the current state of my map of Matijevic hill, trying to fit in all the feature names (I'll add diacritical marks later) with the route. I see I left out Gertrude - if you know any other names I can add please let me know. Names around Whitewater Lake such as Kirkwood will be on a separate close-up map.

Phil

[fredk]

Looking good, Phil. Just one question: is "Box Work" the name of a particular feature, or was it just used to describe a type of feature? The latest PS update mentions

on Sol 3101... the robot field geologist took pictures of boxwork and possible veins in light-toned bedrock

and then

on 3103... the MER scientists noted boxwork again.

That makes it sound like a type of feature.