Geomorphology of Gale Crater, Rock on! |
Geomorphology of Gale Crater, Rock on! |
Sep 26 2012, 10:22 PM
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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) |
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Mar 17 2019, 03:22 PM
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Member Group: Members Posts: 684 Joined: 24-July 15 Member No.: 7619 |
Curious if a new theory about the Pathfinder site might be relevant for Curiosity...
The Pathfinder landing site may have been shaped by water overflowing from Mar's northern ocean into a depression.
J. A. P. Rodriguez, V. R. Baker, T. Liu, M. Zarroca, B. Travis, T. Hui, G. Komatsu, D. C. Berman, R. Linares, M. V. Sykes, M. E. Banks & J. S. Kargel Scientific Reportsvolume 9, Article number: 4045 (2019) “Our paper shows a basin, with roughly the surface area of California, that separates most of the gigantic Martian channels from the Pathfinder landing site. Debris or lava flows would have filled the basin before reaching the Pathfinder landing site. The very existence of the basin requires cataclysmic floods as the channels’ primary formational mechanism” said Rodriguez. Given that Gale may have been close to the shoreline
http://www.sci-news.com/space/planetarysci...eans-05833.html and a Martian ocean would have waves capable of sediment transport,
WIND, WAVES, AND SHORELINE DEVELOPMENT ON MARS Our results indicate that winds ranging from 5-35 m/s blowing across fetch distances from 10 – 100 km would have generated breaking wave velocities ranging from about 1 – 4 m/s. These velocities, in turn, would have been capable of transporting basalt boulders up to about 50 cm. Could Gale basin have occasionally been filled from the ocean side?
By Craig Covault I'm curious, has anybody modeled whether an asteroid or comet impact into an early Mars ocean would generate a Tsunami? We see many references to sudden "mega floods" carving channels along the Martian coastlines, which are often attributed to impacts melting ices and releasing melt waters. What sort of water movement would an ocean impact generate? |
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