Posted on 05/26/2015 12:11:42 PM PDT by fishtank
Remembering Mount St. Helens 35 Years Later
by Brian Thomas, M.S. *
The volcanos main 1980 eruption filled in an entire valley with hundreds of feet of sediment. Another smaller eruption event deposited more material on top of that, and then a third deposition occurred in 1982. Later, a catastrophic flood of snowmelt water and muddy debris tore a gash through those fresh deposits, revealing sharp and flat contacts between each earlier deposit. It also showed that fast-flowing currents can lay down multiple layers thinner than a finger width.
Mount St. Helens revealed to the world that both thick and thin layering can happen fast. Millions of years are not needed to form sedimentary rock or stratigraphic layering.
Sedimentary layers hundreds of feet thick formed within hours during the eruption itself, and then hardened into rock soon after the water drained from them. Could other layered sedimentary rocks in Earths crust have formed rapidly?
(Excerpt) Read more at icr.org ...
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20 years later, my FIL was removing some overgrown bushes from his yard and found the skeletal remains of his long lost cat that had hid there when the ash started to fall.
He couldn't have gotten away with it today, I don't think.
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