A global apparent polar wander path for the last 320 Ma calculated from site-level paleomagnetic data

作者：Bram Vaes, Douwe J.J. van Hinsbergen, Suzanna van de Lagemaat, Erik van der Wiel, Nalan Lom, Eldert L. Advokaat, Lydian M. Boschman, Leandro C. Gallo, Annika Greve, Carl Guilmette, Shihu Li, Peter C. Lippert, Lény Montheil, Abdul Qayyum, Cor G. Langereis · 发表于：Earth-Science Reviews · 年份：2023 · DOI：10.1016/j.earscirev.2023.104547 · 被引用次数：89 · 研究领域：Geomagnetism and Paleomagnetism Studies、Geology and Paleoclimatology Research、Geological and Geochemical Analysis

Apparent polar wander paths (APWPs) calculated from paleomagnetic data describe the motion of tectonic plates relative to the Earth's rotation axis through geological time, providing a quantitative paleogeographic framework for studying the evolution of Earth's interior, surface, and atmosphere. Previous APWPs were typically calculated from collections of paleomagnetic poles, with each pole computed from collections of paleomagnetic sites, and each site representing a spot reading of the paleomagnetic field. It was recently shown that the choice of how sites are distributed over poles strongly determines the confidence region around APWPs and possibly the APWP itself, and that the number of paleomagnetic data used to compute a single paleomagnetic pole varies widely and is essentially arbitrary. Here, we use a recently proposed method to overcome this problem and provide a new global APWP for the last 320 million years that is calculated from simulated site-level paleomagnetic data instead of from paleopoles, in which spatial and temporal uncertainties of the original datasets are incorporated. We provide an updated global paleomagnetic database scrutinized against quantitative, stringent quality criteria, and use an updated global plate motion model. The new global APWP follows the same trend as the most recent pole-based APWP but has smaller uncertainties. This demonstrates that the first-order geometry of the global APWP is robust and reproducible. Moreover, we find that p...