Simple shear experiments on magnetized wax-hematite samples

Details Simple shear experiments on magnetized wax-hematite samples Simple shear experiments on magnetized wax-hematite samples

Aug 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992e%26psl.112..147c&link_type=abstract

Earth and Planetary Science Letters, Volume 112, Issue 1, p. 147-159.

Other

3

Scientific paper

We present the results of a series of simple shear experiments on hematite-bearing paraffin wax samples. Homogeneous and continuous deformation was obtained up to a shear strain value of γ = 1.4, by deforming the samples in a temperature-controlled bath, and at a constant strain rate of 9 × 10‑5 s‑1. During deformation, henatite platelets progressively rotate, which has been checked by measuring the anisotropy of magnetic susceptibility (AMS). Pricipal susceptibility directions tend to paralled the corresponding principal strain directions, and AMS instensity increases with increasing strain. This supports the idea that the hematite population develops a preferred orientation by progressive rigid rotation within the paraffin matrix.Before each deformation step, an isothermal remanent magnetization (IRM) was given to the samples, within the λ1λ3 finite strain plane (the plane containing the shear direction, and normal to the shear plane), with various initial angles to the shear direction ranging from 0° to 180°. After each deformation step, the IRM was measured. I showed no deflection towards the λ2 finite strain direction. In contrast, it did show a systematic rotation within the λ1λ3 plane, always in the same sense as the rotation of strain axes (e.g. counterclockwise in sinistral shear). Furthermore, IRM deviation is of the same order of magnitude for each initial direction from 0° to 180°. This contradicts the passive model that has previously been shown to hold for IRM in coaxially deformed samples. Finally, we show that, in the shear strain range of out experiments (γ = 0 to 1.4), the deviation of IRM depends only on the shear value, and not on its initial direction, and that this deviation is equal to the rigid rotation angle of the shear strain tensor.

Affiliated with

Also associated with

No associations

Rating

Simple shear experiments on magnetized wax-hematite samples does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Simple shear experiments on magnetized wax-hematite samples, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Simple shear experiments on magnetized wax-hematite samples will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1166620