The Rock and Fossil Record

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Across
  1. 1. dating/ any method of measuring the age of an event or object in exact years
  2. 4. column/ an arrangement of rock layers in which the oldest rocks are at the bottom
  3. 5. dating/ any method of determining wether an event or object is older or younger than other events or objects
  4. 6. a principle that states that geologic change occurs suddenly
  5. 7. a break in the geologic record created when rock layers are eroded or when sediment is not deposited for a long period of time
  6. 8. the scientific study of fossils
Down
  1. 2. a principle that states that the geologic processes that occured in the past can be explained ny current geological processes
  2. 3. a principle that states that younger rocks lie above older rocks if the layers have not been disturbed