| 11. | Other basement rocks are the sandstone-containing marine Devonian-Carboniferous Lila faults.
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| 12. | The basin is centered in Gladwin County where the Precambrian basement rocks are deep.
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| 13. | The higher competence of the Caledonian basement rocks made them more resistant to erosion.
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| 14. | The plutonic basement rocks are subdivided into the Nelson, Fiordland and Stewart Island.
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| 15. | These tuffs lie directly on the basement rocks.
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| 16. | The Patuxent is the basal unit of the Coastal Plain sedimentary formations and basement rocks.
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| 17. | The Lower Peninsula is dominated by a Gladwin County where the Precambrian basement rocks are deep.
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| 18. | The gneiss basement rocks project through the shallow waters to form small islands in the Inlet.
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| 19. | This formation is not exposed in the park, though it does form its basement rock.
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| 20. | On top of this basement rock, Permian and Mesozoic sedimentary and volcanic rocks were deposited.
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