Detrital Remanent Magnetization (DRM)


A detrital remanent magnetization (DRM) is acquired by sediments during deposition. The bulk magnetization of a sediment is acquired by the weak, physical alignment of magnetic particles in the geomagnetic field as they fall through the water column of a lake or marine environment and settle on the underlying substrate. DRM acquisition is not finalized until the deposits have been compacted and consolidated. Any subsequent movement of the magnetic particle, through bioturbation or realignment in pore spaces, gives rise to a post-depositional remanent
magnetization (PDRM).



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References


K.L Verosub, 1977, Depositional and postdepositional processes in magnetization of sediments, Rev. Geophys. Space Phys., 15, 129-142



Further Reading


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See Also


List of other relevant MagWiki pages.