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by Stratigraphy.net
New from Snet: Lithologs, a new tool to create lithological/sedimentological logs online..

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Geosonnet 9

The vast caldera of the Yellowstone Erupts siliceous ash from time to time. It’s far from the Cascade subduction zone Therefore, a mantle plume’s the suspect prime. But magma conducts electricity Conductors in the mantle lie out west The tomographic maps are very pretty But show no melt where theory would suggest A plume, with mantle source below the crust Should yield a seismic and

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