Banded Iron Formation -- n. Rock consisting of alternating light and dark layers of iron-rich chert (the dark layers have more iron minerals) formed from 3.8 to 1.7 billion years ago.
BIF see banded iron formation
binding energy The energy that holds the particles in the nucleus of an atom together. It is this energy, when released, that is used to generate nuclear power.
 See also: Volcanism, Carbonate, Sedimentary rock, Sediment, Plate
  
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