Browsing by Author "Chiswell, Paul G."

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    Differentiation trends of the teschenite sill, in Dalhousie, New Brunswick
    (University of New Brunswick, 1979) Chiswell, Paul G.; S. Bachinski
    An analcime-bearing olivine gabbro (teschenite) sill intrudes Lower Devonian sediments and calcalkaline volcanic rocks of the Dalhousie area, northern New Brunswick. Petrographic examination of the 27 thin sections and 9 whole-rock chemical analyses of samples of the sill indicate that the teschenite formed by two separate injections of magma each of which independently underwent differentiation after emplacement.