Paleomagnetic dating: Methods, MATLAB software, example

Hnatyshin, Danny; Kravchinsky, Vadim A.

doi:10.1016/j.tecto.2014.05.013

Cited by 5 publications

(4 citation statements)

References 23 publications

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“…An additional opportunity comes from the method giving posterior distributions for pole ages. There is a long history of paleomagnetists comparing undated (or poorly dated) paleomagnetic poles with APWPs to gain insight on their age (Hnatyshin & Kravchinsky, 2014; McCabe et al., 1984). These methods typically rely on comparison between designated pole pairs or consider the reference APWP to not have uncertainty.…”

Section: Challenges and Opportunities In The Application Of Paleomagn...mentioning

confidence: 99%

Bayesian Paleomagnetic Euler Pole Inversion for Paleogeographic Reconstruction and Analysis

2022

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Apparent polar wander paths (APWPs) synthesized from paleomagnetic poles provide the most direct data for reconstructing past paleogeography and plate motions for times earlier than ca. 200 Ma. In this contribution, we describe a new method for APWP synthesis that extends the paleomagnetic Euler pole analysis of Gordon et al. (1984, https://doi.org/10.1029/TC003i005p00499) by placing it within the framework of a Bayesian inverse problem. This approach incorporates uncertainties in pole positions and age that are often ignored in standard treatments. The paleomagnetic Euler poles resulting from the inversions provide estimates for full‐vector plate motion (both latitude and longitude) and associated uncertainty. The method allows for inverting for one or more Euler poles with the timing of changepoints being solved as part of the inversion. In addition, the method allows the incorporation of true polar wander rotations, thus providing an avenue for probabilistic partitioning of plate tectonic motion and true polar wander based on paleomagnetic poles. We show example inversions on synthetic data to demonstrate the method's capabilities. We illustrate application of the method to Cenozoic Australia paleomagnetic poles which can be compared to independent plate reconstructions. A two‐Euler pole inversion for the Australian record recovers northward acceleration of Australia in the Eocene with rates that are consistent with plate reconstructions. We also apply the method to constrain rapid rates of motion for cratonic North America associated with the Keweenawan Track of late Mesoproterozoic paleomagnetic poles. The application of Markov chain Monte Carlo methods to estimate paleomagnetic Euler poles can open new directions in quantitative paleogeography.

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Section: Challenges and Opportunities In The Application Of Paleomagn...mentioning

confidence: 99%

Bayesian Paleomagnetic Euler Pole Inversion for Paleogeographic Reconstruction and Analysis

2022

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“…The increasing number of high-resolution regional reference curves and better-constrained global models that have emerged in the past decades, as well as increased study of global paleointensity records, has opened a wide geographic range of volcanoes for numerical PSV dating (e.g., Panovska et al 2018;Di Chiara 2020;Béguin et al 2021;Mochizuki et al 2021). The development of PSV dating tools (Pavón-Carrasco et al 2011;Hnatyshin and Kravchinsky 2014) that use Bayesian statistics to compare the results of volcanic samples to the reference curve has allowed recent studies to obtain one or multiple discrete age ranges for a specific result, allowing for more precise dating of historic and prehistoric eruptions (Roperch et al 2015;Yasuda et al 2020).…”

Section: From Relative To Numerical Datingmentioning

confidence: 99%

Paleomagnetism and rock magnetism as tools for volcanology

et al. 2022

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Paleomagnetic and rock magnetic methods for studying volcanoes and their products have been developed since the second half of the twentieth century. These methods have been used to find tephra in sediment cores, date volcanic eruptions and deposits, determine emplacement temperatures of volcanic deposits, and estimate flow directions of dikes, lava flows, and pyroclastic flow deposits. In the twenty-first century, these techniques have steadily improved and expanded, resulting in more probing and precise studies of volcanoes using paleomagnetism. We believe that continual improvement of existing techniques and the increased awareness and interest in paleomagnetic methods should allow more studies to enhance the understanding of volcanic processes.

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“…In such times, it is possible to use paleosecular variation (PSV) records to provide ages (28,30,31). Archaeomagnetic dating is based on the statistical comparison of the archaeomagnetic data with the expected values from a reference regional curve (32,33).…”

Section: Significancementioning

confidence: 99%

The strength of the Earth’s magnetic field from Pre-Pottery to Pottery Neolithic, Jordan

Chiara

Tauxe

Levy

et al. 2021

Proc. Natl. Acad. Sci. U.S.A.

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Constraining secular variation of the Earth’s magnetic field strength in the past is fundamental to understanding short-term processes of the geodynamo. Such records also constitute a powerful and independent dating tool for archaeological sites and geological formations. In this study, we present 11 robust archaeointensity results from Pre-Pottery to Pottery Neolithic Jordan that are based on both clay and flint (chert) artifacts. Two of these results constitute the oldest archaeointensity data for the entire Levant, ancient Egypt, Turkey, and Mesopotamia, extending the archaeomagnetic reference curve for the Holocene. Virtual Axial Dipole Moments (VADMs) show that the Earth’s magnetic field in the Southern Levant was weak (about two-thirds the present field) at around 7600 BCE, recovering its strength to greater than the present field around 7000 BCE, and gradually weakening again around 5200 BCE. In addition, successful results obtained from burnt flint demonstrate the potential of this very common, and yet rarely used, material in archaeomagnetic research, in particular for prehistoric periods from the first use of fire to the invention of pottery.

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Paleomagnetic dating: Methods, MATLAB software, example

Cited by 5 publications

References 23 publications

Bayesian Paleomagnetic Euler Pole Inversion for Paleogeographic Reconstruction and Analysis

Bayesian Paleomagnetic Euler Pole Inversion for Paleogeographic Reconstruction and Analysis

Paleomagnetism and rock magnetism as tools for volcanology

The strength of the Earth’s magnetic field from Pre-Pottery to Pottery Neolithic, Jordan

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