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Discussion

Stratigraphy deals with

  • A.the mechanical strength of rock masses
  • B.the crystal structure of rock-forming minerals
  • C.the movement of groundwater through aquifers
  • D.the sequence, age and correlation of rock strata

Answer: D

Establishing which bed overlies which, and matching sequences between distant places, is how the geological record is read as a history. Correlation lets a formation known to be troublesome at one site be anticipated at another.

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