Micromagnetic Tomography for Paleomagnetism and Rock-Magnetism.

ABSTRACT: Our understanding of the past behavior of the geomagnetic field arises from magnetic signals stored in geological materials, e.g., (volcanic) rocks. Bulk rock samples, however, often contain magnetic grains that differ in chemistry, size, and shape; some of them record the Earth's magnetic field well, others are unreliable. The presence of a small amount of adverse behaved magnetic grains in a sample may already obscure important information on the past state of the geomagnetic field. Recently it was shown that it is possible to determine magnetizations of individual grains in a sample by combining X-ray computed tomography and magnetic surface scanning measurements. Here we establish this new Micromagnetic Tomography (MMT) technique and make it suitable for use with different magnetic sca

SUBMITTER: de Groot LV 

PROVIDER: S-EPMC9286618 | biostudies-literature | 2021 Oct

REPOSITORIES: biostudies-literature