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Fig. 12. Cerros del Rio basalt is largely buried by Bandelier Tuff on the Pajarito Plateau. Top photograph shows a thick stack of basalt flows overlain by Bandelier Tuff near the mouth of Frijoles Canyon. Individual flows are separated by interflow breccia, scoria, sediment, and ash. Lower photograph shows well-developed columnar joints in dense flow interiors near White Rock. A thin interflow breccia separates two flows near the bottom of the photograph.
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