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Conceptual stratigraphic models for Home Plate and rocks to the east. In model 1, silica rocks (in yellow) are emplaced on the Halley unit followed by volcaniclastics and basalt/scoria. Subsequent erosion re-exposes the silica rocks and Halley unit. In model 2, silica rocks are emplaced on the Halley unit after emplacement and erosion of the other units. The vertical section represents ∼2 m, but units are not shown to scale.
