No. 94 Inverted topography, normal faults, dikes, and basalt flow-filled valley turned plateau

Last known location: Edmund, OK

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This wooden block features a basalt (black walnut) capped plateau that is incised by rivers cutting into a stratified sequence sequence of paduak, maple, purple heart, green poplar and Brazilian cherry. This sequence is cut by two normal faults and two vertical dikes (a thick black walnut dike and a narrower mahogany dike that has darker zones of contact metamorphism highlighted in African mahogany). These strata are exposed in two V-shaped valley systems to accentuate Rule of Vs patterns. The basalt flow is erupting from the base of a cinder cone of black walnut. The base of this large block measures roughly 5 1/4 inches square and is finished with Tried & True® linseed oil and beeswax.

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