| 21. | The soils are underlain by hard calcium carbonate caliche layer several inches thick.
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| 22. | The Erfurt Formation is underlain by the Upper Muschelkalk.
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| 23. | The watershed is underlain by Pottsville and Allegheny Formations.
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| 24. | In the streams lower reaches, this is underlain by glacial lake clays.
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| 25. | The Trawden Limestone Group is preceded ( underlain ) by the Roddlesworth Formation.
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| 26. | An area of of the county is known to be underlain with natural asbestos.
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| 27. | The upland area is underlain by Nature Conservation Review and Geological Conservation Review sites.
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| 28. | The western part comprises Torridonian sandstone underlain by Arkle, C�l M�r and Suilven.
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| 29. | The Shasta Valley is dominated by nearby Mount Shasta and underlain with geologic time.
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| 30. | Quezon s underlain with sedimentary rock formations the dominant being recent depositions of alluvium.
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