| 11. | However, he said the canal walls were made mostly of resistant rock and a collapse was unlikely.
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| 12. | Eroded monoclines leave steeply tilted resistant rock called a hogback and the less steep version is a cuesta.
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| 13. | These deltas eventually dried and were buried under subsequent sediments where they hardened into a layer of resistant rock.
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| 14. | The less resistant rock layers are mainly made up of shale, a softer rock that weathers and erodes more easily.
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| 15. | The glaciers, and later meltwater, wore away less resistant rock, leaving behind hills and ridges of the harder diabase and anorthosite.
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| 16. | "' Caprock "'or "'cap rock "'is a harder or more resistant rock type overlying a weaker or less resistant rock type.
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| 17. | The Rush Creek glacier split in two when it encountered the resistant rock of what is now known as Reversed Peak.
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| 18. | "' Caprock "'or "'cap rock "'is a harder or more resistant rock type overlying a weaker or less resistant rock type.
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| 19. | The gorge that Salem Creek flows through is lined with resistant rocks of the Catskill Formation and the Trimmers Rock Formation.
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| 20. | These barren block fields occur in periglacial environments where outcrops of resistant rock are exposed with a slope of less than 25?
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