Fossils

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Across
  1. 3. / where there has been no subsequent disturbance sedimentary strata were deposited in ascending order with younger beds successively overlying older beds.
  2. 6. /the remains or imprints of organisms from earlier geological periods preserved in sedimentary rock.
  3. 7. / The position within a time sequence held by an event, fossil, mineral.
  4. 8. / he age of a geologic phenomenon measured in present Earth years.
Down
  1. 1. /the action or process of forcing a body of igneous rock between or through existing formations, without reaching the surface.
  2. 2. /a widely distributed fossil, of narrow range in time, regarded as characteristic of a given geological formation, used especially in determining the age of related formations.
  3. 4. /the remains or impression of a prehistoric organism preserved in petrified form or as a mold or cast in rock.
  4. 5. / a technique which is used to date materials such as rocks or carbon.