Geomagnetic Excursions and Secular Variations

A. P. Roberts; G. M. Turner

doi:10.1016/B978-0-444-53643-3.00053-4

Geomagnetic Excursions and Secular Variations

A. P. Roberts^*, G. M. Turner

^*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceeding › Chapter › peer-review

6 Citations (Scopus)

Abstract

The Earth's magnetic field varies on a range of timescales that are useful for dating Quaternary rocks and sediments. Decadal- to millennial-scale geomagnetic variations can provide precise age constraints through paleomagnetic identification of paleosecular variations (most useful in the Holocene), relative paleointensity variations (useful throughout the Quaternary), geomagnetic excursions (generally most useful for stratigraphic correlation when accompanied by additional chronological constraints), and polarity reversals (useful between 2.59 and 0.78. Ma). These geomagnetic variations can generally provide chronological precision to within a few ka (or better). Paleomagnetism is therefore a key Quaternary dating technique.

Original language	English
Title of host publication	Encyclopedia of Quaternary Science
Subtitle of host publication	Second Edition
Publisher	Elsevier Inc.
Pages	705-720
Number of pages	16
ISBN (Electronic)	9780444536433
ISBN (Print)	9780444536426
DOIs	https://doi.org/10.1016/B978-0-444-53643-3.00053-4
Publication status	Published - 1 Jan 2013

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abstract = "The Earth's magnetic field varies on a range of timescales that are useful for dating Quaternary rocks and sediments. Decadal- to millennial-scale geomagnetic variations can provide precise age constraints through paleomagnetic identification of paleosecular variations (most useful in the Holocene), relative paleointensity variations (useful throughout the Quaternary), geomagnetic excursions (generally most useful for stratigraphic correlation when accompanied by additional chronological constraints), and polarity reversals (useful between 2.59 and 0.78. Ma). These geomagnetic variations can generally provide chronological precision to within a few ka (or better). Paleomagnetism is therefore a key Quaternary dating technique.",

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AU - Turner, G. M.

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AB - The Earth's magnetic field varies on a range of timescales that are useful for dating Quaternary rocks and sediments. Decadal- to millennial-scale geomagnetic variations can provide precise age constraints through paleomagnetic identification of paleosecular variations (most useful in the Holocene), relative paleointensity variations (useful throughout the Quaternary), geomagnetic excursions (generally most useful for stratigraphic correlation when accompanied by additional chronological constraints), and polarity reversals (useful between 2.59 and 0.78. Ma). These geomagnetic variations can generally provide chronological precision to within a few ka (or better). Paleomagnetism is therefore a key Quaternary dating technique.

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KW - Excursion

KW - Geodynamo

KW - Geomagnetic field

KW - Inclination

KW - Paleointensity

KW - Paleomagnetism

KW - Polarity reversal

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KW - Virtual geomagnetic pole

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BT - Encyclopedia of Quaternary Science

PB - Elsevier Inc.

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Geomagnetic Excursions and Secular Variations

Abstract

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