| 41. | The church was built from Silesian granite and glacial erratics, covered with a patterned slate roof cladding.
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| 42. | Because haystacks are identical to the local bedrock, they by definition cannot be classified as glacial erratics.
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| 43. | A few glacial erratics stud the prairie.
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| 44. | Geologically, the rock comes from Canada and is the largest glacial erratic rock in the Willamette Valley.
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| 45. | Because of the lack of large rock faces in Denmark and Northern Germany, glacial erratics were used instead.
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| 46. | In the syenitic glacial erratic boulder.
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| 47. | Plymouth Rock is a glacial erratic.
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| 48. | These have created the sand ridges of the geest with their typical glacial erratic boulders of granite and gneiss.
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| 49. | Snowdon and its surrounding peaks have been described as " true examples of roches moutonn�es, glacial erratics and moraines.
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| 50. | Larger pieces of rock that are encrusted in till or deposited on the surface are called " glacial erratics ".
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