Skip to main content
Select Source:

palaeomagnetism

palaeomagnetism Study of changes in the direction and intensity of Earth's magnetic field through geological time. This is important in the investigation of the theory of continental drift. Since the ‘magnetic memory’ of rocks is measurable, this determines their orientation in relation to magnetic north at the time they solidified. The Earth's polarity reversed at least 20 times in the past 4 to 5 million years; earlier changes cannot at present be determined.

Cite this article
Pick a style below, and copy the text for your bibliography.

  • MLA
  • Chicago
  • APA

"palaeomagnetism." World Encyclopedia. . Encyclopedia.com. 23 Feb. 2018 <http://www.encyclopedia.com>.

"palaeomagnetism." World Encyclopedia. . Encyclopedia.com. (February 23, 2018). http://www.encyclopedia.com/environment/encyclopedias-almanacs-transcripts-and-maps/palaeomagnetism

"palaeomagnetism." World Encyclopedia. . Retrieved February 23, 2018 from Encyclopedia.com: http://www.encyclopedia.com/environment/encyclopedias-almanacs-transcripts-and-maps/palaeomagnetism

Learn more about citation styles

Citation styles

Encyclopedia.com gives you the ability to cite reference entries and articles according to common styles from the Modern Language Association (MLA), The Chicago Manual of Style, and the American Psychological Association (APA).

Within the “Cite this article” tool, pick a style to see how all available information looks when formatted according to that style. Then, copy and paste the text into your bibliography or works cited list.

Because each style has its own formatting nuances that evolve over time and not all information is available for every reference entry or article, Encyclopedia.com cannot guarantee each citation it generates. Therefore, it’s best to use Encyclopedia.com citations as a starting point before checking the style against your school or publication’s requirements and the most-recent information available at these sites:

Modern Language Association

http://www.mla.org/style

The Chicago Manual of Style

http://www.chicagomanualofstyle.org/tools_citationguide.html

American Psychological Association

http://apastyle.apa.org/

Notes:
  • Most online reference entries and articles do not have page numbers. Therefore, that information is unavailable for most Encyclopedia.com content. However, the date of retrieval is often important. Refer to each style’s convention regarding the best way to format page numbers and retrieval dates.
  • In addition to the MLA, Chicago, and APA styles, your school, university, publication, or institution may have its own requirements for citations. Therefore, be sure to refer to those guidelines when editing your bibliography or works cited list.

palaeomagnetism

palaeomagnetism Field of geophysics concerned with the measurement and interpretation of remanent magnetism or the record of the Earth's past magnetic field (see GEOMAGNETIC FIELD). Much valuable information has been obtained concerning polar wandering and continental drift.

Cite this article
Pick a style below, and copy the text for your bibliography.

  • MLA
  • Chicago
  • APA

"palaeomagnetism." A Dictionary of Earth Sciences. . Encyclopedia.com. 23 Feb. 2018 <http://www.encyclopedia.com>.

"palaeomagnetism." A Dictionary of Earth Sciences. . Encyclopedia.com. (February 23, 2018). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/palaeomagnetism

"palaeomagnetism." A Dictionary of Earth Sciences. . Retrieved February 23, 2018 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/palaeomagnetism

Learn more about citation styles

Citation styles

Encyclopedia.com gives you the ability to cite reference entries and articles according to common styles from the Modern Language Association (MLA), The Chicago Manual of Style, and the American Psychological Association (APA).

Within the “Cite this article” tool, pick a style to see how all available information looks when formatted according to that style. Then, copy and paste the text into your bibliography or works cited list.

Because each style has its own formatting nuances that evolve over time and not all information is available for every reference entry or article, Encyclopedia.com cannot guarantee each citation it generates. Therefore, it’s best to use Encyclopedia.com citations as a starting point before checking the style against your school or publication’s requirements and the most-recent information available at these sites:

Modern Language Association

http://www.mla.org/style

The Chicago Manual of Style

http://www.chicagomanualofstyle.org/tools_citationguide.html

American Psychological Association

http://apastyle.apa.org/

Notes:
  • Most online reference entries and articles do not have page numbers. Therefore, that information is unavailable for most Encyclopedia.com content. However, the date of retrieval is often important. Refer to each style’s convention regarding the best way to format page numbers and retrieval dates.
  • In addition to the MLA, Chicago, and APA styles, your school, university, publication, or institution may have its own requirements for citations. Therefore, be sure to refer to those guidelines when editing your bibliography or works cited list.