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You have to define the time frame. Plainly spoken, about 4 to 3 billion years ago, the various parts of land and seabottom that now make up England used to have hundreds of small and large volcanoes. The question is: how old are the youngest volcanoes of England. Differrently phrased: when was the last time that "England" was anywhere near a tectonic subduction zone? The answer: it was so many tens-hundreds of million years ago that no traces of volcanoes can be found in the British Isles. There are some volcanic rocks broken to bits and scattered in the geological strata, but no cohesive evidence of any whole volcanoes.

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16y ago

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