Cape York - The "Lakelands", Starting sol 2703 |
Cape York - The "Lakelands", Starting sol 2703 |
Sep 1 2011, 04:30 PM
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Senior Member Group: Moderator Posts: 4280 Joined: 19-April 05 From: .br at .es Member No.: 253 |
Bye bye, Tisdale. It's time to move on.
Next target? Philosilicates. ----- Edited on Sep 16 2011. This thread is dedicated to the exploration of Cape York, starting on sol 2703 when Opportunity left the "rocky garden" and started moving towards Chester Lake. |
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Sep 11 2011, 08:57 PM
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Senior Member Group: Members Posts: 3009 Joined: 30-October 04 Member No.: 105 |
That is it, exactly. When a rock like basalt weathers, in the presence of water, it breaks down into clay minerals (the phyllosilicates in the news) and various anions and cations ("minerals" dissolved in the water). The type of clays, and other weathering byproducts, is dependent on the ionic makeup of the water to begin with, as well as the temperature and whether the environment was oxidizing or reducing. By looking at the weathered zone on the hill, we can tell what the conditions were way back then.
--Bill -------------------- |
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Sep 12 2011, 07:17 PM
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#3
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Member Group: Members Posts: 267 Joined: 5-February 06 Member No.: 675 |
Sorry I didn't get back earlier to thank Phil and Bill fore the helpful answers (doing some remodeling and those who've been there know what that does to free time).
Steve M |
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