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| Consolidated sediment block removed from the Zone 5 layer in one of the soil monoliths. This 2-x-3 inch block shows that the Zone 5 sediment became coarser and less compact toward the top of the zone. The black tic marks at the top indicate that the block is oriented correctly (i.e., top is nearest the surface and toward the top of Zone 5). Photo by Heidi Luchsinger. |