On the role of Brownian motion in the control of detrital remanent magnetization of sediments

Stacey F.D. (1972) On the role of Brownian motion in the control of detrital remanent magnetization of sediments. Pure and Applied Geophysics PAGEOPH, 98 1: 139-145. doi:10.1007/BF00875588


Author Stacey F.D.
Title On the role of Brownian motion in the control of detrital remanent magnetization of sediments
Journal name Pure and Applied Geophysics PAGEOPH   Check publisher's open access policy
ISSN 0033-4553
Publication date 1972-01-01
Sub-type Article (original research)
DOI 10.1007/BF00875588
Volume 98
Issue 1
Start page 139
End page 145
Total pages 7
Publisher Birkhäuser-Verlag
Subject 1908 Geophysics
1906 Geochemistry and Petrology
Abstract The field dependence of magnetic remanence in laboratory deposited sediments is re-examined in terms of the average orientation of small grains of magnetite subject to the combined effect of an aligning field and thermal agitation. The classical (Langevin) formula for paramagnetic susceptibility is generalized to describe an assembly of grains with magnetic moments having a uniform distribution of values between zero and an upper limit, yielding a simple analytical expression in excellent accord with the pioneering measurements of Johnson, Murphy and Torreson. Comparison of theory and observation shows that the grain moments are intermediate between the values expected for single domains and multidomains, confirming the existence of pseudo-single domain effects, as deduced from observations of thermoremanence.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: Scopus Import
 
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Created: Tue, 28 Jun 2016, 16:46:53 EST by System User