Finishing work in and around Seitah, sols 238-378 |
Finishing work in and around Seitah, sols 238-378 |
Oct 21 2021, 06:50 AM
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Solar System Cartographer Group: Members Posts: 10229 Joined: 5-April 05 From: Canada Member No.: 227 |
It's time to start a new thread - this will cover the remaining work in Seitah and the drive back to the landing site.
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 PDF: 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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Nov 18 2021, 04:46 PM
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Member Group: Members Posts: 790 Joined: 9-May 21 From: Germany Member No.: 9017 |
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Nov 18 2021, 06:25 PM
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Member Group: Members Posts: 706 Joined: 3-December 04 From: Boulder, Colorado, USA Member No.: 117 |
Looks like there may be some ripple structures preserved in the rock in that image.
John |
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Nov 19 2021, 12:56 AM
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Member Group: Members Posts: 156 Joined: 8-February 04 From: Phoenix, AZ USA Member No.: 9 |
Looks like there may be some ripple structures preserved in the rock in that image. I see what you are talking about, at some of the bed boundaries. There is also a fallen piece that has a bedding plane exposed with what could be small 3D dunes or ripples (can't quite determine the scale). They both are not pleasingly preserved, at least from here, so we'll have to wait and see. We've been seeing distinct bed boundaries for a while, in several places along the traverse, at several stratigraphic intervals. None of them looked completely planar, but there were no obvious ripple forms either, let alone cross-stratification within the beds. After finally determining that the grain size was in the medium-coarse to granule range, that's not surprising. Maybe the grain size is smaller in these outcrops, and ripples and dunes could have formed during the flows. -------------------- Tim Demko
BioLink site |
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