Deicke and Millbrig bentonite layers
... that Deicke and Millbrig bentonite layers in eastern United States were formed by huge volcanic eruptions?
... that <b id="mwIw"><a href="./Deicke_and_Millbrig_bentonite_layers" id="mwJA" rel="mw:WikiLink" title="Deicke and Millbrig bentonite layers">Deicke and Millbrig bentonite layers</a></b> in eastern United States were formed by huge volcanic eruptions?