Geomorphology of Gale Crater, Rock on! |
Geomorphology of Gale Crater, Rock on! |
Sep 26 2012, 10:22 PM
Post
#1
|
|
Senior Member Group: Members Posts: 3516 Joined: 4-November 05 From: North Wales Member No.: 542 |
I'd like a discussion thread about the geology detatched from the time limits of current MSL threads. We had a 'Geomorphology of Cape York' thread that attracted a lot of interesting posts. How about 'Geomorphology of Gale Crater'? I have one or two ideas but many more questions, and I'd like to post them in a longer-running thread away from the day to day imaging discussion. Any other takers?
For starters, does anybody have a contour map of this place like the one at Meridiani with 5m intervals? ADMIN: You have your wishes fulfilled on UMSF (sometimes) |
|
|
Jun 10 2019, 12:35 AM
Post
#2
|
|
Senior Member Group: Members Posts: 1045 Joined: 17-February 09 Member No.: 4605 |
[quote name='serpens'} Why a preference for low pH from ABOVE, rather than BELOW? Taking a very broad brush approach from the depths of an armchair, smectites are sensitive to acid leaching and the result of this decomposition is amorphous silica. As can be seen from the Chemin results the phyllosilicates decrease with elevation while the amorphous silica proportion increases which is indicative of top down infiltration of low pH water https://www.hou.usra.edu/meetings/lpsc2019/pdf/1127.pdf I used the term indicative because is obvious that while the Murray formation which includes the ridge has been subject to complex diagenetic/alteration processes the alteration of the ridge was anomalous. The only thing we can be sure of while the professionals unravel the data is that during the early modification of Gale crater there was quite literally water, water everywhere. |
|
|
Lo-Fi Version | Time is now: 5th June 2024 - 06:11 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. |