Study of the Earth’s past magnetism as it is recorded in the rocks.

The study of natural remanent magnetization in order to determine the intensity and direction of the earth's magnetic field in the geologic past.

Study of the Earth's past magnetism as it is recorded in the rocks.

As magnetic particles are accumulated in sediments or incorporated into cooling magma (solidifying into rock), they align up on the Earth's magnetic field.  If that field reverses (something it h [..]

Study of the Earth's past magnetism as it is recorded in the rocks.

past geomagnetic field information that is preserved in rocks [paleomagnetic]

The magnetism of an iron-bearing rock imparted to it by the Earth’s magnetic field when the rock formed. Literally, early magnetism; meaning magnetism formed in a past geologic era.

Natural magnetism is acquired by some rocks, especially igneous rocks that are rich in iron, as they solidify. As the rocks cool, iron-bearing minerals are 'frozen' into position. The orientation of iron-bearing magnetic minerals record the location of the Earth's magnetic poles and the latitude of the rock at the time of cooling.

Residual magnetism from the earth’s magnetic field detectable in rock.

the study of the alignment of magnetic minerals in rock, specifically as it relates to the reversal of Earth's magnetic poles; also the magnetic properties that rock acquires during formation

(geology) The study of the strength and direction of the Earth's magnetic field as it has changed over geologic time. * '''2004''', Richard Fortey, ''The Earth'', Folio Society 2011, p. 139: *: Th [..]