Fig. 3.— Alkalinity ratio plot for Ross Volcano analyses, dots, and Mull alkaline magma series, crosses (from Bailey et al., 1924). The alkalinity ratio has been used (Wright, 1969) to identify mixed petrographic provinces, and shows how silicification of intermediate lavas in the Ross volcano has induced an apparent swing towards calcalkaline affinities compared with the Mull akaline lavas.
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Transactions of the Royal Society of New Zealand : Earth Sciences, Volume 8, Issue 8, 18 September 1970, Page 113
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59Fig. 3.—Alkalinity ratio plot for Ross Volcano analyses, dots, and Mull alkaline magma series, crosses (from Bailey et al., 1924). The alkalinity ratio has been used (Wright, 1969) to identify mixed petrographic provinces, and shows how silicification of intermediate lavas in the Ross volcano has induced an apparent swing towards calcalkaline affinities compared with the Mull akaline lavas. Transactions of the Royal Society of New Zealand : Earth Sciences, Volume 8, Issue 8, 18 September 1970, Page 113
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