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