Mathematics – Logic
Scientific paper
Nov 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992georl..19.2139t&link_type=abstract
Geophysical Research Letters (ISSN 0094-8276), vol. 19, no. 21, p. 2139-2142.
Mathematics
Logic
11
Igneous Rocks, Imaging Techniques, Magnetic Permeability, Paleomagnetism, Geomagnetism, Magnetization, Remanence
Scientific paper
High-resolution magnetic susceptibility imaging is a new technique for studying the magnetic properties of geological thin sections. The 2D distribution of both remanent and induced magnetization can be determined with a spatial resolution (less than 1.0 mm) that is similar to the size of phenocrysts in the sample. Amongst many problems in rock magnetism to which it could be applied, the technique holds great potential for understanding the origin of the anisotropy of magnetic susceptibility in pyroclastic flows. Preliminary tests on a single sample of ignimbrite indicate that secondary iron-titanium oxide particles deposited within vesicle walls prior to their collapse are responsible for the bulk susceptibility.
Moyer T. C.
Thomas Ian M.
Wikswo P. Jr. J.
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