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Crossing the Dunes at Murray Buttes, Sites 54-, Sols 1353-, May 28 2016-
elakdawalla
post Mar 28 2017, 05:42 PM
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QUOTE (jccwrt @ Mar 27 2017, 04:02 PM) *
Some late-breaking discussion on the Ireson Hill caprocks from LPSC last week: these appear to be a new class ('Pogy') of basaltic sediment found within Gale Crater. They're unusual in that they're alkalic, but look like they have a different source region from similar rocks (e.g. Jake M) that have been studied previously. The Pogy rocks have a low potassium and nickel content, but are heavily enriched in calcium. So far these don't look like they were a major contribution to the Murray sedimentary system (if they even belong to it), and might represent a brief pulse of activity from another sediment source. Pogy-class rocks also have Fe/Mg ratio and CaO/Al2O3 ratios, which is similar to shergottites. That's about all I understood from the talks.

Cool! Was this a ChemCam talk?


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jccwrt
post Mar 28 2017, 06:07 PM
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It's a mix of information from ChemCam (John Bridges) and APXS/basalt chemistry modelling (Mariek Schmidt) talks.
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atomoid
post Yesterday, 12:33 AM
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QUOTE (charborob @ Mar 28 2017, 06:19 AM) *
Sol 1648 Lmastcam view (no color correction). Notice the "pancake piles" on the left

mmm, Thanks for that, absolutely lovely pancakes! now serving stitch pair anaglyph salvaged from the ICE mess with a heaping helping of flapjacks on the side for parellel viewing
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PaulH51
post Yesterday, 02:15 PM
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Curiosity Mission Update by Lauren Edgar: Sol 1651: Scoop #1 at Ogunquit Beach
QUOTE
Sol 1650 activities completed as expected, so it’s time to start scooping. Today’s plan is focused on acquiring Scoop #1 and dropping off a portion of the sample to SAM. This is the first of four intended scoops at this location, aimed at sampling different grain sizes and their composition. The plan begins with a Mastcam mosaic of “Kennebago Divide” to document some possible layering exposed by the wheel scuff on the right side of the workspace. We’ll also take several Mastcam images for change detection to monitor active sand movement. Then the arm backbone starts by retracting the arm and a vibe to clean APXS. After that we’ll take a few MAHLI documentation images of the “Flanders Bay” and Scoop #1 locations (prior to scooping), and a very close-up image of the “Avery Peak” ripple crest. Next up, we’ll acquire Scoop #1! The sample will be sieved, and the fine-grained portion (<150 microns) will be delivered to SAM. These are all very power intensive activities so there wasn’t much room for other science today, but tomorrow’s plan should accommodate more activities and context observations. In the meantime, sitting on “Ogunquit Beach” is providing a pretty great view.


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PaulH51
post Today, 02:59 AM
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Curiosity Mission Update by Lauren Edgar: Sol 1652: CheMin drop-off and SAM Analysis
QUOTE
Sol 1651 activities executed nominally, so today’s plan is focused on dropping off the fine-grained portion of “Ogunquit Beach” Scoop #1 (now named “OG1”) to CheMin, and SAM analysis of OG1. The plan kicks off with Mastcam multispectral imaging of the right and left wheel scuffs, as well as Mastcam change detection imaging. Then ChemCam will investigate “Tumbledown Mountain,” “Elephant Mountain” and “Canoe Point,” to characterize the composition of sand in different parts of the left wheel scuff. Navcam will also acquire an image to look at line-of-sight dust loading within the crater. Later in the afternoon, part of the OG1 sample will be dropped off to CheMin. Curiosity will stay busy overnight, with a SAM solid sample evolved gas experiment to analyze the fine-grained portion of OG1. I’m busy on the other side of the planet working operations for the Opportunity rover today, but it’s fun to hear many members of both rover teams jumping back and forth between telecons to help plan lots of great science activities for our hardworking robots.

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