Beyond Lewis and Clark Gap, Sol 4482- (September 2, 2016-) |
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Beyond Lewis and Clark Gap, Sol 4482- (September 2, 2016-) |
 May 16 2017, 07:51 PM
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#286
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Member  Group: Members Posts: 362 Joined: 13-April 06 From: Malta Member No.: 741  |
The channel being ancient as it is would have accumulated a lot of dust and therefore I presume that the rover is going to have a difficult time to reach any minerals which would have been deposited by the water which formed the channel.
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May 16 2017, 08:40 PM
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#287
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 Member Group: Admin Posts: 976 Joined: 29-September 06 From: Pasadena, CA - USA Member No.: 1200 |
Hmm, I wonder if they are going to ask to drag our feet while down the ramp? Sort of a Spirit driving technique?
Paolo -------------------- Disclaimer: all opinions, ideas and information included here are my own,and should not be intended to represent opinion or policy of my employer.
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May 16 2017, 10:16 PM
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#288
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 Member Group: Members Posts: 866 Joined: 15-March 05 From: Santa Cruz, CA Member No.: 196 |
dragging the wheel sounds like a great idea, subsurface deposits hiding just under our feet..
Below is an attempted match-up (i may be way off) of features from Phil's map and Charborob's pano those great works I recycled here rather than afflict the mess i stitched. The inset crosseye details a signifficant trough in the gully (green line).. It would be interesting to have an idea as to how much original material has been eroded from the rim, as my recurring (and absolutely amateur) impression of the gully is it is more of a remnant of some fairly recent and short-lived Milankovitch cycle snowpack (catastrophic melt?) type of feature rather than a Hesperian era surface or hydrothermal emplaced creek.
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May 16 2017, 11:54 PM
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#289
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Senior Member Group: Members Posts: 1043 Joined: 17-February 09 Member No.: 4605 |
An eposter that provides an easy read summary of Endeavour including assessed erosion levels is here: https://www.hou.usra.edu/meetings/lpsc2015/eposter/2017.pdf
The spherule lag deposits on the plains imply that there has been only a few metres of erosion of the fragile sedimentary deposits since the Meridiani water table dropped around 3.5My, so preservation of remnants of an early gully seems quite reasonable following desiccation of the environment. Prior to that with a near surface water table at Victoria crater and the permeable sedimentary deposits there must have been a plentiful water supply at Endeavour. |
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May 17 2017, 07:39 PM
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#290
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Senior Member Group: Members Posts: 2817 Joined: 22-April 05 From: Ridderkerk, Netherlands Member No.: 353 |
The Pancam L2 Panoramic view on Sol 4721-4729.
Jan van Driel
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May 18 2017, 03:04 PM
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#291
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 Senior Member Group: Members Posts: 4246 Joined: 17-January 05 Member No.: 152 |
Evidence of a DD or gust between sols 4730 and 4733 - note the new dark streak:
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May 18 2017, 06:42 PM
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#292
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Member Group: Members Posts: 923 Joined: 10-November 15 Member No.: 7837 |
Here is a little bump for my VR ready Sketchfab models covering Oppy's location.
Click thru each image to see... Marathon Valley, Endeavour Crater  Beyond Lewis & Clark Gap  I've updated VR starting location in each as well as improved clipping planes. -------------------- |
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May 19 2017, 09:02 AM
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#293
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Senior Member Group: Members Posts: 2817 Joined: 22-April 05 From: Ridderkerk, Netherlands Member No.: 353 |
The Navcam L0 view on Sol 4733.
Jan van Driel
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May 19 2017, 09:40 AM
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#294
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Senior Member Group: Members Posts: 2817 Joined: 22-April 05 From: Ridderkerk, Netherlands Member No.: 353 |
and the Pancam L2 view on Sol 4731-4733.
Jan van Driel
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May 20 2017, 12:17 AM
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#295
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Member Group: Members Posts: 507 Joined: 10-September 08 Member No.: 4338 |
Parallel-eye stereo of part of the Winnemucca mesa. Note the apparent hanging formations. |
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May 20 2017, 11:45 PM
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#296
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Senior Member Group: Members Posts: 1043 Joined: 17-February 09 Member No.: 4605 |
QUOTE (Sean @ May 18 2017, 06:42 PM)  Here is a little bump for my VR ready Sketchfab models covering Oppy's location...... Beautiful work Sean and much appreciated. If the valley is as it seems a remnant water feature then the erosion resistant ridge below where it terminates (covered by regolith?) and the exposed polyhydrated sulphates rich area below that could hold a few surprises. |
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May 22 2017, 05:54 AM
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#297
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Member Group: Members Posts: 507 Joined: 10-September 08 Member No.: 4338 |
Here's a nice "postcard" view that covers Oppy's current location. |
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May 22 2017, 06:40 PM
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#298
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Senior Member Group: Members Posts: 2817 Joined: 22-April 05 From: Ridderkerk, Netherlands Member No.: 353 |
The Navcam R0 view on Sol 4736.
Jan van Driel
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May 28 2017, 11:39 PM
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#299
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Member Group: Members Posts: 306 Joined: 4-October 14 Member No.: 7273 |
Gorgeous view back towards Cape Tribulation on Sol 4743! My attempt at an approximate true color version of this mosaic.
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May 29 2017, 01:47 AM
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#300
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 Member Group: Members Posts: 691 Joined: 21-December 07 From: Clatskanie, Oregon Member No.: 3988 |
My take.
 
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