| 21. | The quartzite is generally regarded as the highest member of the series.
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| 22. | Quartzite is weather-resistant and contains few nutrient-bearing minerals.
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| 23. | Quartzite and sandstone rocks feature in the park's geological formations.
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| 24. | Geologically, the region is dominated by deposits of shale and quartzite.
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| 25. | However, the Rock is no longer one solid piece of quartzite.
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| 26. | All six of these formations are primarily composed of quartzite and argillite.
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| 27. | Quartzite and limestone are also found in distal locations on the mountain.
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| 28. | The primary rocks are metamorphic, mostly quartzites and slate.
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| 29. | Quartzite is also very resistant to chemical weathering and can form ridges.
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| 30. | The artifacts consist of flakes and cores made of quartzite.
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