Other questions in this quiz

2. where is pyritisation common?

  • silica rich sediment
  • deep sea or shallow swamp
  • iron rich sediment
  • shallow sea or shallow swamp

3. an external mould has what features of the shell?

  • External features
  • soft parts only
  • interal features
  • mostly hard parts

4. what is a common example of pyritisation?

  • trilobites
  • Petrified wood
  • ammonites
  • plants

5. in replacement what does unstable aragonite change to?

  • silica
  • it doesn't change
  • Calcite
  • Carbon

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