paleomagnetism

/peษชlษชษ™(สŠ)หˆmaษกnษ™tษชzm/

IPA: /P EY0 L IY0 OW0 M AE1 G N AH0 T IH0 Z AH0 M/

noun
  1. 1

    The study of the strength and direction of the Earth's magnetic field as it has changed over geologic time.

Source: https://en.wiktionary.org/wiki/paleomagnetism