Tag: boudinage
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Power-washing the Paleozoic Petersburg Pluton
300 million years ago, vast quantities of magma intruded the Earth’s crust deep beneath what would one day become Richmond, Virginia. The magma that reached the surface fed a legion of volcanoes which no doubt erupted their fiery wrath over Ol’ Virginny, but much of that magma crystallized at depth, forming granite with its distinctive…