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paleomagnetism Definition

paleo·mag·net·ism (pā′lē ō mag′nə tiz′əm)

noun

  1. the alignment of iron and nickel grains in rock with the earth's magnetic poles, fixed at the time of that rock's formation
  2. the study of this alignment, specif. as it relates to the shifting of the earth's magnetic poles over time

paleomagnetism Related Forms

pa′leo·mag·net′ic adjective pa′leo·mag·net′i·cally adverb