Cape York, Landfall! |
Cape York, Landfall! |
Aug 19 2011, 05:13 AM
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#241
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Member Group: Members Posts: 808 Joined: 10-October 06 From: Maynard Mass USA Member No.: 1241 |
-------------------- CLA CLL
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Aug 19 2011, 05:42 AM
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#242
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Senior Member Group: Members Posts: 2084 Joined: 13-February 10 From: Ontario Member No.: 5221 |
Floyd:
Xenolith means it may have rocks from other places embedded in it, so it's two (or more) birds with one stone (no pun intended); saves travel time nicely for Oppy. That's the limit of my geology though.... |
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Aug 19 2011, 05:52 AM
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#243
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Senior Member Group: Members Posts: 2228 Joined: 1-December 04 From: Marble Falls, Texas, USA Member No.: 116 |
I'd call it a breccia, though I can see the possibility of John's xenoliths. Tisdale also has a similar colors and texture, though not quite as decrepit, so it could be the same lithology.
-------------------- ...Tom
I'm not a Space Fan, I'm a Space Exploration Enthusiast. |
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Aug 19 2011, 05:56 AM
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#244
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Administrator Group: Admin Posts: 5172 Joined: 4-August 05 From: Pasadena, CA, USA, Earth Member No.: 454 |
"Xenolith" doesn't necessarily mean other places. Xenoliths are common in extrusive igneous rocks. Lava flowing up from underground can tear off and carry away chunks of rock from the walls of its conduits; these chunks of "country rock" don't melt before the lava solidifies. So you can have lava from some deep source incorporating chunks of rock from anywhere in the crust through which it flowed.
Still, I gotta say I read John's post and I was all, "what, you can say all that from one low-res JPEGgy color photo?" -------------------- My website - My Patreon - @elakdawalla on Twitter - Please support unmannedspaceflight.com by donating here.
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Aug 19 2011, 09:56 AM
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#245
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Member Group: Members Posts: 809 Joined: 3-June 04 From: Brittany, France Member No.: 79 |
The sundial of Oppy on sol 2688, 11h12 LT. The top of the gnomon makes me think of Titan
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Aug 19 2011, 10:39 AM
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#246
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Senior Member Group: Moderator Posts: 4279 Joined: 19-April 05 From: .br at .es Member No.: 253 |
Getting closer to our target. Here's the latest navcam picture.
For me it resembles a Nimitz class' aircraft carrier. Should we call it USS Tisdale? BTW, this last drive faulted again after 4m. 1F367000442EFFBMKSP1254L0M1.JPG 02690::p1254::02::2::0::0::2::0::4::front_haz_fault_pri15_4bpp |
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Aug 19 2011, 10:43 AM
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#247
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The Poet Dude Group: Moderator Posts: 5551 Joined: 15-March 04 From: Kendal, Cumbria, UK Member No.: 60 |
Back at Santa Maria (how long ago that seems now!) we saw a rock called "Terreros" which seems, to me, to have something of a look of Munro. I'm thinking of the bluish material that appears to be "splashed" over it (not saying it was splashed, that's just a visual reference, ok?)
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Aug 19 2011, 12:52 PM
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#248
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Member Group: Members Posts: 656 Joined: 20-April 05 From: League City, Texas Member No.: 285 |
[attachment=25309:Image1d.jpg] One interesting thing... note what looks like two prominent round "holes" in the nearest end (more obvious in the 3D versions). There's more of about the same size visible elsewhere as well. My best guess is that these were once gas-filled vesicles which were exposed when the edge fragmented -- which I guess reinforces the idea that this is a chunk of basalt. [EDIT: Incidentally, why doesn't the image included in the quote appear? Seems like in the past this worked nicely, but more recently the result is as above] |
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Aug 19 2011, 02:00 PM
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#249
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Founder Group: Chairman Posts: 14432 Joined: 8-February 04 Member No.: 1 |
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Aug 19 2011, 02:13 PM
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#250
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Solar System Cartographer Group: Members Posts: 10157 Joined: 5-April 05 From: Canada Member No.: 227 |
I thought we didn't want the image to appear in the quote!
Phil -------------------- ... because the Solar System ain't gonna map itself.
Also to be found posting similar content on https://mastodon.social/@PhilStooke Maps for download (free PD: https://upload.wikimedia.org/wikipedia/comm...Cartography.pdf NOTE: everything created by me which I post on UMSF is considered to be in the public domain (NOT CC, public domain) |
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Aug 19 2011, 02:16 PM
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#251
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Founder Group: Chairman Posts: 14432 Joined: 8-February 04 Member No.: 1 |
Well - quite. I certainly don't want to see it.
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Aug 19 2011, 03:13 PM
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#252
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Member Group: Members Posts: 656 Joined: 20-April 05 From: League City, Texas Member No.: 285 |
I thought we didn't want the image to appear in the quote!... I think sometimes, when there is potential confusion as to which image is being referred to, it is beneficial to include the image in the quote. Generally we edit the quote to include only the relevant bits being referred to -- sometimes this would include an image. Last time I did this I went to the effort of saving a local copy of the image and re-uploading it with the post, but in this instance it wasn't that critical. |
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Aug 19 2011, 03:21 PM
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#253
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Junior Member Group: Members Posts: 98 Joined: 17-July 11 From: Pasadena, CA Member No.: 6066 |
Back at Santa Maria (how long ago that seems now!) we saw a rock called "Terreros" which seems, to me, to have something of a look of Munro. I'm thinking of the bluish material that appears to be "splashed" over it (not saying it was splashed, that's just a visual reference, ok?) Oooooooooooo la la. Some of the folks here are looking at the commonalities between Tisdale 2 and Bagua. (Can't remember where Bagua was...) -m |
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Aug 19 2011, 03:54 PM
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#254
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Senior Member Group: Moderator Posts: 3431 Joined: 11-August 04 From: USA Member No.: 98 |
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Aug 19 2011, 03:56 PM
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#255
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Junior Member Group: Members Posts: 44 Joined: 25-February 08 From: Greece, Komotini Member No.: 4055 |
Guys, do you know what happened to the excellent site: marsgeo.com ? Has it just changed name or is it deleted?
-------------------- "It`s one small step for a man. A giant leap for all mankind!" Armstrong, Apollo 11, 1969.
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