You searched for:
“reversal”
reversal
This entry is located in the following unit:
vers-, vert-, -verse, -version, -version, -versation, -versal, -versary, -vert, vort-, vors-
(page 12)
A unit related to:
“reversal”
(Latin: separation, apart, asunder; removal, away, from; negation, deprivation, undoing, reversal, utterly, completely; in different directions)
(Greek: different, other, another; divergence; a combining form denoting a condition differing from the normal or a reversal, or referring to "another")
(Latin: from, away from, off; down; wholly, entirely, utterly, complete; reverse the action of, undo; the negation or reversal of the notion expressed in the primary or root word)
Word Entries containing the term:
“reversal”
Alternation of the Earth's magnetic polarity or a reversal of the polarity of the Earth's magnetic field which has occurred in the past as shown by the remanent magnetization found in igneous and sedimentary rocks: The Earth's internal geomagnetic field reversal changes, on average, about every 300,000 to 1 million years.
This geomagnetic reversal is very sudden on a geologic time scale, apparently taking about 5,000 years.
The time between reversals is highly variable, sometimes less than 40,000 years and at other times as long as 35 million years and no regularities or period times have been discovered so far.
A long interval of one polarity may be followed by a short interval of an opposite polarity.
This entry is located in the following unit:
geo-, ge- +
(page 13)