Science Frontiers ONLINE No. 29: Sep-Oct 1993 Issue Contents

Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects .

Episode Of Steep Geomagnetic Inclination

K.L. Verosub has reported very steep geomagnetic inclinations in 120,000- year-old sediments in California. The mean inclination in these deposits ranged from 62° to 66°. Because this episode lasted several thousand years, Verosub believes that it opens to question the interpretation of other paleomagnetic data, where it is assumed that samples represent enough time for the geomagnetic field to have averaged out to a geocentric axial dipole.

(Verosub, Kenneth L.; "An Episode of Steep Geomagnetic Inclination 120,000 Years Ago," Science, 221:359, 1983.)

Comment. The gist of this rather technical article is that all the scenarios of crustal plate motion may have to be modified substantially.

From Science Frontiers #29, SEP-OCT 1983. © 1983-2000 William R. Corliss

---

Science Frontiers Sourcebook Project Reviewed in: Icarus: Volume 41, Issue 3, p. 470-470 1984, Vol.56:3, P.615 1983, Vol.58:3 June 1984, Vol.60:3 Dec 1984, Vol.72:3 Dec 1987 Journal of the Royal Astronomical Society of Canada, Vol. 81, no. 1 1987 American Journal of Physics, Volume 52, Issue 8, p. 764 August 1984 Quotes "Before opening the book, I set certain standards that a volume which treads into dangerous grounds grounds like this must meet. The author scrupulously met, or even exceeded those standards. Each phenomenon is exhaustively documented, with references to scientific journals [..] and extensive quotations" -- "Book Review: The moon and planets: a catalog of astronomical anomalies", The Sourcebook Project, 1985., Corliss, W. R., Journal of the Royal Astronomical Society of Canada>, Vol. 81, no. 1 (1987), p. 24., 02/1987