Santa Maria! |
Santa Maria! |
Dec 15 2010, 11:17 PM
Post
#1
|
|
Member Group: Members Posts: 362 Joined: 13-April 06 From: Malta Member No.: 741 |
think it deserves a topic on its own
|
|
|
Dec 18 2010, 01:06 AM
Post
#2
|
|
Senior Member Group: Members Posts: 4247 Joined: 17-January 05 Member No.: 152 |
|
|
|
Dec 18 2010, 01:46 AM
Post
#3
|
|
Senior Member Group: Admin Posts: 4763 Joined: 15-March 05 From: Glendale, AZ Member No.: 197 |
Agree on the landslide Fred.
And this crop you made is where CRISM ID'd an interesting pixel (according to the latest press image page.) The red circle marked there on Figure 1 indicates the pixel size and location of an observation by the Compact Reconnaissance Imaging Spectrometer for Mars (CRISM) .... The spectrum recorded by CRISM for this spot, unlike the spectrum recorded for the place indicated by the blue circle on the floor of the crater, suggests what might be a water-bearing sulfate mineral. -------------------- If Occam had heard my theory, things would be very different now.
|
|
|
Dec 18 2010, 07:25 PM
Post
#4
|
|||
Senior Member Group: Members Posts: 4247 Joined: 17-January 05 Member No.: 152 |
And this crop you made is where CRISM ID'd an interesting pixel (according to the latest press image page.) I think eoincampbell's right - the "landslide" is not the same as the CRISM spot - the CRISM spot is this area: Looking back at the pics of Endurance, that crater had prominent layering visible around most of the circumference. Definitely a big difference from SM. But I don't see how it could be that we're looking into ejecta from Endeavour, as MarkG suggested - wouldn't that mean the rocks would be of completely different composition than the familiar Meridiani bedrock, since Endeavour predated the Meridiani deposits? Could it just be that SM is fresher than Endurance or Victoria, both of which had prominent layering? Ie in a few million years (or whatever), maybe the broken up rubble/ejecta visible on the surface today will erode away, leaving intact layered bedrock underneath visible? Or do we expect any layered bedrock to be visible in a fresh crater? Could this be a bit of layering starting to show through: |
||
|
|||
Lo-Fi Version | Time is now: 1st June 2024 - 08:43 PM |
RULES AND GUIDELINES Please read the Forum Rules and Guidelines before posting. IMAGE COPYRIGHT |
OPINIONS AND MODERATION Opinions expressed on UnmannedSpaceflight.com are those of the individual posters and do not necessarily reflect the opinions of UnmannedSpaceflight.com or The Planetary Society. The all-volunteer UnmannedSpaceflight.com moderation team is wholly independent of The Planetary Society. The Planetary Society has no influence over decisions made by the UnmannedSpaceflight.com moderators. |
SUPPORT THE FORUM Unmannedspaceflight.com is funded by the Planetary Society. Please consider supporting our work and many other projects by donating to the Society or becoming a member. |