| 1. | Both these peaks are formed by millstone grit on limestone footings.
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| 2. | The promontory is a Millstone Grit outcrop situated in Hathersage Moor.
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| 3. | It is a part of the Carboniferous Millstone Grit group.
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| 4. | The underlying geology is Millstone Grit overlaid with coal measures.
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| 5. | The upper valley is primarily millstone grit with fluvio-glacial deposits.
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| 6. | It is succeeded ( overlain ) by the Millstone Grit Group
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| 7. | The geological exposures around the bay reveal great complexity with considerable Millstone Grit Series.
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| 8. | The river flows over the Millstone Grit outcrop from some way beyond Hepste Bridge.
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| 9. | Millstone Grit for building came from Bramley Fall on the opposite side of the river.
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| 10. | It is a Grade II * listed building made of millstone grit from Derwent bank.
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