Faulting above a dyke intrusion
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Faulting above a dyke intrusion

by Morgan Jones

The formation of a small half graben above a dyke feeding the fissure eruption at Holuhraun/Bárðabunga Iceland (back right of picture). The faulting and fracturing was two weeks old here. Shadow of helicopter for scale. Photo by Morgan Jones and Sverre Planke (VBPR).