| 1. | On cooling, these crystallised and solidified to form the Great Whin Sill.
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| 2. | It is a disused quarry, from which Whin Sill stone was formerly excavated.
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| 3. | Whin Sill is also seen again at Hadrian's Wall.
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| 4. | It plays host to the intrusive Whin Sill.
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| 5. | After the end of the Carboniferous period, an intrusion of quartz dolerite formed the Whin Sill.
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| 6. | The quartz-microgabbro of the Whin Sill occupies the higher ground on this southeastern side of the bay.
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| 7. | The site exposes sections of low vertical crag, as well as dip-slope slabs of the Whin Sill
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| 8. | The crags are an outcropping of the Whin Sill, an igneous rock, dolerite, associated with magma flows from ancient volcanos.
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| 9. | The Little Whin Sill is olivine-bearing and believed to be composed of an early differentiate of the Whin dolerite magma.
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| 10. | Studies of the petrology of the dolerites of the Whin Sill complex have revealed significant differences between the Little Whin and the Great Whin.
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