Embracing Uncertainty to Resolve Polar Wander: A Case Study of Cenozoic North America

Author:

Gallo L. C.1ORCID,Domeier M.1ORCID,Sapienza F.2ORCID,Swanson‐Hysell N. L.3ORCID,Vaes B.4ORCID,Zhang Y.3ORCID,Arnould M.5ORCID,Eyster A.6ORCID,Gürer D.7ORCID,Király Á.1ORCID,Robert B.8,Rolf T.1ORCID,Shephard G.1ORCID,van der Boon A.1ORCID

Affiliation:

1. Centre for Earth Evolution and Dynamics University of Oslo Oslo Norway

2. Department of Statistics University of California, Berkeley Berkeley CA USA

3. Department of Earth and Planetary Science University of California, Berkeley Berkeley CA USA

4. Department of Earth Sciences Utrecht University Utrecht The Netherlands

5. Laboratoire de Géologie de Lyon ‐ Terre Planètes, Environnement University Lyon 1 Claude Bernard Lyon France

6. Department of Geoscience University of Wisconsin‐Madison Madison WI USA

7. Research School of Earth Sciences Australian National University Canberra ACT Australia

8. Institut de Physique du Globe de Paris Université de Paris Paris France

Abstract

AbstractOur understanding of Earth's paleogeography relies heavily on paleomagnetic apparent polar wander paths (APWPs), which represent the time‐dependent position of Earth's spin axis relative to a given block of lithosphere. However, conventional approaches to APWP construction have significant limitations. First, the paleomagnetic record contains substantial noise that is not integrated into APWPs. Second, parametric assumptions are adopted to represent spatial and temporal uncertainties even where the underlying data do not conform to the assumed distributions. The consequences of these limitations remain largely unknown. Here, we address these challenges with a bottom‐up Monte Carlo uncertainty propagation scheme that operates on site‐level paleomagnetic data. To demonstrate our methodology, we present an extensive compilation of site‐level Cenozoic paleomagnetic data from North America, which we use to generate a high‐resolution APWP. Our results demonstrate that even in the presence of substantial noise, polar wandering can be assessed with unprecedented temporal and spatial resolution.

Funder

Horizon 2020 Framework Programme

Division of Earth Sciences

Publisher

American Geophysical Union (AGU)

Subject

General Earth and Planetary Sciences,Geophysics

Cited by 3 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. Quantitative Analysis of Paleomagnetic Sampling Strategies;Journal of Geophysical Research: Solid Earth;2023-11

2. A global apparent polar wander path for the last 320 Ma calculated from site-level paleomagnetic data;Earth-Science Reviews;2023-10

3. A Bootstrap Common Mean Direction Test;Journal of Geophysical Research: Solid Earth;2023-08

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