| 1. | An angular unconformity therefore exists along the anticline's crest.
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| 2. | The lower boundary is an unconformity with the underlying Skiddaw Group.
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| 3. | The unconformity is clearly visible in the face of the waterfall.
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| 4. | However interdigitation is found as if to testify against an unconformity.
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| 5. | The gap in the rock record has been called The Great Unconformity.
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| 6. | A fourth unconformity was created by a period of erosion.
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| 7. | Another period of erosion returned, creating a third unconformity.
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| 8. | An unconformity marks transition to the overlying Pleuroceras spinatum at Old Nab.
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| 9. | An unconformity lies between the Catskill Formation and the Spechty Kopf Formation.
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| 10. | This large unconformity indicates a long period for which no deposits are present.
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