| 21. | Only the first floor, wrapped in field stone and picturesque volcanic rock, survived.
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| 22. | The volcanic rocks possibly total as much as } } thick.
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| 23. | McSween said it resembled the common terrestrial volcanic rock named andesite.
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| 24. | There are volcanic rocks from low hills in the shale landscapes.
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| 25. | It provides the highest exposure of volcanic rock on the island.
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| 26. | Golfball-sized volcanic rocks pepper their dream home, which is powered by a generator.
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| 27. | Their dark tone is due to the volcanic rock called basalt.
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| 28. | This species grows both on limestone and granitic or volcanic rocks.
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| 29. | Volcanic rock from the Miocene can be found on the Haukuppe.
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| 30. | The Wrangellian rocks include fossiliferous sedimentary rocks interspersed with volcanic rocks.
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