Paleozoic sentence example

paleozoic
  • The higher elevations are mostly either Archean or Paleozoic formations projecting above Tertiary deposits.
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  • The Paleozoic sediments, ranging in age from Cambrian to Permian, occupy the Great Valley, the Valley Ridges and the plateaus still farther west.
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  • Recession of the plateaux margins has exposed underlying Mesozoic strata and, in some areas, the Paleozoic basement.
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  • The southernmost mountain system of the Anti-Atlas thus consists of crystalline basement and Paleozoic sediments.
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  • The book vividly describes the geology of Essex from the deeply buried Paleozoic rocks to the soft sands and clays of the Ice Age.
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  • Paleozoic fauna took a nose dive from about 300 families to about 50.
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  • Paleozoic rocks formed by uplift in the Tertiary.
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  • Lower Paleozoic greywacke sandstones were deposited in a deep marine environment and may have volcanic ash beds and conglomerates within.
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  • The crystallines are confined to the portion of the belt east of the Great Valley where Paleozoic rocks are always highly metamorphosed and occur for the most part in limited patches, excepting in New England and Canada, where they assume greater areal importance, and are besides very generally intruded by granites.
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  • The mountains are composed in great part of Paleozoic strata, often modified by vulcanism and greatly denuded and sculptured by wind and water erosion.
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