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Sunday, August 1, 2010

Sediment layers tell all

How can u not get excited about sediment? I say this knowing some of my students r now rolling their eyes. Yet these layers tell the story of a fractional history of the planet they live on. How very cool that we can touch the time of a volcanic eruption (black layers). The thickest layer was from a former eruption by Mt. Hekla.

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