Continuing into Glenelg, Leaving Rocknest behind, sols 102-166 (Nov 18 2012-Jan 23, 2013) |
Continuing into Glenelg, Leaving Rocknest behind, sols 102-166 (Nov 18 2012-Jan 23, 2013) |
Nov 19 2012, 05:36 AM
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Senior Member Group: Admin Posts: 3108 Joined: 21-December 05 From: Canberra, Australia Member No.: 615 |
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Nov 25 2012, 07:09 PM
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Solar System Cartographer Group: Members Posts: 10173 Joined: 5-April 05 From: Canada Member No.: 227 |
My take on the geology - the alluvial fan north of the ellipse is just the last of many episodic alluvial and slump deposits that have covered the crater floor. I would think of the unconsolidated gravelly sediments we see in the cratered unit and the hilly unit as being earlier alluvial deposits, and the layered and fractured material as an older unit, either lacustrine as already suggested or maybe layers of cemented volcanic ash and/or aeolian deposits.
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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Nov 25 2012, 08:35 PM
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Member Group: Members Posts: 282 Joined: 18-June 04 Member No.: 84 |
My take on the geology - the alluvial fan north of the ellipse is just the last of many episodic alluvial and slump deposits that have covered the crater floor. I would think of the unconsolidated gravelly sediments we see in the cratered unit and the hilly unit as being earlier alluvial deposits, and the layered and fractured material as an older unit, either lacustrine as already suggested or maybe layers of cemented volcanic ash and/or aeolian deposits. Phil A lot of these rocks look a bit like Pumice. http://mars.jpl.nasa.gov/msl-raw-images/ms...8000E1_DXXX.jpg |
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