No. 40 Graben with two drainages and a dike

Last known location: Glen Ellyn, IL

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This wooden block features a stratified sequence of Tzalam, cherry, maple, Brazilian cherry, poplar, and mahogany that are cut by two normal faults and a vertical dike of black walnut. The base of the block measures roughly 5 inches square and is finished with linseed oil and beeswax.

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