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peneplain |
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peneplainGently undulating, almost featureless plain near sea level. This would form, theoretically, by various erosional processes that reduce areas of initially high relief produced by active uplift to areas of virtually no relief. The lack of present-day peneplains tends to discredit the theory, but some geomorphologists propose that large areas of low relief at high altitude in some mountains are evidence of uplifted peneplains. Others question whether the dynamic relationship between erosion and rock type would ever allow the development of a peneplain, even over very long timespans. peneplain [′pēn·ə‚plān] (geology) How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| Plagens characterizes the survey as a professional effort, "leaving the art alone to say what is, at least to me, uplifting in the short run, but then, as I worry about it all, a long, sloping, slight, but discernible peneplain of depression. Laterite nickel and cobalt mineralization is associated with a peneplain surface developed on the ultramafics. |
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