Cape York - Shoemaker Ridge and the NE traverse, Starting sol 2735 |
Cape York - Shoemaker Ridge and the NE traverse, Starting sol 2735 |
Nov 18 2011, 11:26 AM
Post
#496
|
|
Senior Member Group: Members Posts: 2997 Joined: 30-October 04 Member No.: 105 |
QUOTE (CR) But, I am not sure it is deeply weathered. Agreed. Putting the original thought in context, a terrestrial geologist in eastern Alabama/western Georgia (the igneous/metamorphic province) would saunter up to an outcrop and say this-- the granite/schist would be soft, crumbly and saprolytic and you would have to dig a bit to get a "fresh" sample. But in our Martian context, yes, "deeply altered" is more appropriate. I fully expect to find examples of the pre-Endeavour impact land surface on this traverse.QUOTE (Tesh) Note to everyone: check that blog; it has a lot of "goodies". Quality. I like the title of the blog, it reflects the OliverTwistian feeling I have looking at all this over the Internet. It's a good read.EDIT: I like the comment "The engineering team accepted the risk after several long, fruitful, and constructive conversations.* " and the ensuing footnote. BT,DT. One question-- Matt's blog entry seems to imply that the Homestake vein is more tubular in nature. My mental image of that class of structure on CY is that it is more tabular in nature, like a filled fracture. I am more of a soft-rock type than hard-rock so I'll beg clarification (from anyone). --Bill -------------------- |
|
|
Nov 18 2011, 01:50 PM
Post
#497
|
|
Senior Member Group: Members Posts: 2173 Joined: 28-December 04 From: Florida, USA Member No.: 132 |
|
|
|
Nov 18 2011, 03:49 PM
Post
#498
|
|
Senior Member Group: Members Posts: 2997 Joined: 30-October 04 Member No.: 105 |
Based on that description the implication is tubular, and I've heard other comments that suggest that. My experience is more "tabular".
Just tryin' to get edified... --Bill EDIT-- uploadeded a HiRISE image (ESP_024015_1775) of the "winterhaven" area of Cape York. This image has been enhanced to bring out small details and fine contrasts so it's not as smooth-looking as some versions. -------------------- |
|
|
Nov 18 2011, 05:02 PM
Post
#499
|
|
Member Group: Members Posts: 399 Joined: 28-August 07 From: San Francisco Member No.: 3511 |
Matt also describes Homestake as being "..about 1cm in diameter.."
(did the whole of the section that was driven-over become visible?) -------------------- 'She drove until the wheels fell off...'
|
|
|
Nov 18 2011, 11:54 PM
Post
#500
|
|
Junior Member Group: Members Posts: 98 Joined: 17-July 11 From: Pasadena, CA Member No.: 6066 |
One question-- Matt's blog entry seems to imply that the Homestake vein is more tubular in nature. My mental image of that class of structure on CY is that it is more tabular in nature, like a filled fracture. I am more of a soft-rock type than hard-rock so I'll beg clarification (from anyone). --Bill Well... Matt also describes Homestake as being "..about 1cm in diameter.." (did the whole of the section that was driven-over become visible?) Ah, poo! I knew my using "diameter" would bite me. Literally a minute before I popped over here, I was publishing comments and re-reading the entry when I noticed that. (I often delegate proof-reading until after publishing. My habits are impeccably silly.) So, no, I don't mean to imply that it's tubular. It's definitely more of a filled fracture. Less round-y, more corner-y. -m |
|
|
Nov 19 2011, 01:07 AM
Post
#501
|
|
Senior Member Group: Members Posts: 2997 Joined: 30-October 04 Member No.: 105 |
Ah, so I heard what you said and understood what you meant...
Sometimes, as a geologist, one can get a bit pedantic with empty precision in terminology. You were correct-- those Turkey Haven and North Haven pics are tremendous. --Bill -------------------- |
|
|
Nov 19 2011, 05:15 AM
Post
#502
|
|
Senior Member Group: Members Posts: 2228 Joined: 1-December 04 From: Marble Falls, Texas, USA Member No.: 116 |
... Note to everyone: check that blog; it has a lot of "goodies". Many thanks for your insightful blog, Matt. -------------------- ...Tom
I'm not a Space Fan, I'm a Space Exploration Enthusiast. |
|
|
Nov 19 2011, 05:29 AM
Post
#503
|
|
Member Group: Members Posts: 807 Joined: 10-October 06 From: Maynard Mass USA Member No.: 1241 |
Hey Matt... thanks for the blog with the crazy good inside info!
-------------------- CLA CLL
|
|
|
Nov 19 2011, 02:18 PM
Post
#504
|
||
The Poet Dude Group: Moderator Posts: 5551 Joined: 15-March 04 From: Kendal, Cumbria, UK Member No.: 60 |
"Turkey Haven" looking south... I think... I'm a little lost after not really paying attention the past couple of days...
-------------------- |
|
|
||
Nov 19 2011, 02:42 PM
Post
#505
|
|
Senior Member Group: Moderator Posts: 4279 Joined: 19-April 05 From: .br at .es Member No.: 253 |
|
|
|
Nov 19 2011, 03:05 PM
Post
#506
|
|
Senior Member Group: Members Posts: 1619 Joined: 12-February 06 From: Bergerac - FR Member No.: 678 |
-------------------- |
|
|
Nov 19 2011, 04:37 PM
Post
#507
|
||
Junior Member Group: Members Posts: 98 Joined: 17-July 11 From: Pasadena, CA Member No.: 6066 |
"Turkey Haven" looking south... I think... I'm a little lost after not really paying attention the past couple of days... I think this is right. Turkey Haven seems to be referenced as the one right under our nose; we'll be IDD'ing this boss through the Thanksgiving weekend. "Winter Haven" might be another name floating around, which is ~15m NE of Oppy right now. It has even greater northerly slopes than Turkey Haven, which is at about 15 degrees as is! I don't know if "Winter Haven" is the winter haven, but it certainly is a candidate. Since it doesn't an an official associated target in our tactical database (for now), I would guess that it was just the name the science team chose on a whim. That seemed to be the way of things at the SOWG meeting for 2778/9... Interesting how I'm knee-deep with the team and I don't know these things! -m |
|
|
||
Nov 19 2011, 05:15 PM
Post
#508
|
|
The Poet Dude Group: Moderator Posts: 5551 Joined: 15-March 04 From: Kendal, Cumbria, UK Member No.: 60 |
Some new interviewy goodness on my blog, if anyone would like a look...
http://roadtoendeavour.wordpress.com/2011/...ask-the-experts -------------------- |
|
|
Nov 19 2011, 05:22 PM
Post
#509
|
|
Senior Member Group: Admin Posts: 4763 Joined: 15-March 05 From: Glendale, AZ Member No.: 197 |
"Turkey Haven" looking south... Here we are at long last! Almost at the summit of the peak we've NOT been gazing up at all these long months. -------------------- If Occam had heard my theory, things would be very different now.
|
|
|
Nov 19 2011, 06:28 PM
Post
#510
|
|
Solar System Cartographer Group: Members Posts: 10128 Joined: 5-April 05 From: Canada Member No.: 227 |
The summit of the peak we've been gazing down on? (when we could see it at all)
Phil -------------------- ... because the Solar System ain't gonna map itself.
Also to be found posting similar content on https://mastodon.social/@PhilStooke NOTE: everything created by me which I post on UMSF is considered to be in the public domain (NOT CC, public domain) |
|
|
Lo-Fi Version | Time is now: 29th March 2024 - 10:24 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. |