Figure F9. Image scans of black ash layers and laminated sediments. A. Interval 323-U1339A-1H-3, 0–23 cm. B. Interval 323-U1339B-12H-4, 111–145 cm. Note that the laminated interval overlies the ash layer in A, whereas three laminated intervals occur interbedded with three ash layers in B, which also shows an example of graded bedding.
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