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Showing 1 to 1 of 1 for “"North Sister Basaltic Andesite"”.
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Evidence From High Ni Olivine For Diverse Primitive Magmas In Cascade Volcanism
… in primitive basalt from central Oregon and northern California, primitive basaltic andesite from central and southern Oregon, and for primitive andesite from northern California and southern British Columbia. Phenocrysts in nearly all samples show normal core-to-rim compositional zonation, …