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Description: | Mostly basaltic dyke and sill specimens.
In geological terms, a dyke is a long, narrow, cross-cutting mass or vein of igneous rock which has intruded into a pre-existing fissure in older rock (whereas a sill lies in parallel with surrounding strata).
From B.K.N. Wyllie - found in Hunterian Museum. | Subjects: | Geology; Volcanic | Source: | Hunterian Museum | Address: | University of Glasgow,
University Avenue,
G12 8QQ | Creator: | Hunterian Museum and Art Gallery, University of Glasgow | Contributor: | From B.K.N. Wyllie - found in Hunterian Museum. | Identifier: | H-78 |
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