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DOI	10.1130/B35633.1
	The amalgamation of Pangea: Paleomagnetic and geological observations revisited
	Wu L.; Murphy J.B.; Quesada C.; Li Z.-X.; Waldron J.W.F.; Williams S.; Pisarevsky S.; Collins W.J.
发表日期	2021
ISSN	167606
起始页码	625
结束页码	646
卷号	133 期号:2021-03-04
英文摘要	The supercontinent Pangea formed by the subduction of the Iapetus and Rheic oceans between Gondwana, Laurentia, and Baltica during mid-to-late Paleozoic times. However, there remains much debate regarding how this amalgamation was achieved. Most paleogeographic models based on paleomagnetic data argue that the juxtaposition of Gondwana and Laurussia (Laurentia-Baltica) was achieved via long-lasting highly oblique convergence in the late Paleozoic. In contrast, many geology-based reconstructions suggest that the collision between the two continents was likely initiated via a Gondwanan promontory comprising the Iberian, Armorican, and Bohemian massifs, and parts of the basement units in the Alpine orogen during the Early Devonian. To help resolve this discrepancy, we present an updated compilation of high-quality paleopoles of mid-to-late Paleozoic ages (spanning Middle Ordovician and Carboniferous times) from Gondwana, Laurentia, and Baltica. These paleopoles were evaluated with the Van der Voo selection criteria, corrected for inclination error where necessary, and were used to revise their apparent polar wander (APW) paths. The revised APW paths were constructed using an innovative approach in which age errors, A95 ovals, and Q-factors of individual paleopoles are taken into account. By combining the resulting APW paths with existing geological data and field relationships in the European Variscides, we provide mid-to-late Paleozoic paleogeographic reconstructions which indicate that the formation of Pangea was likely initiated at 400 Ma via the collision between Laurussia and a ribbon-like Gondwanan promontory that was itself formed by a scissor-like opening of the Paleotethys Ocean, and that the amalgamation culminated in the mostly orthogonal convergence between Gondwana and Laurussia. © 2020. Geological Society of America.
语种	英语
来源期刊	Bulletin of the Geological Society of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/184701
作者单位	Earth Dynamics Research Group, The Institute for Geoscience Research (TIGeR), School of Earth and Planetary Sciences, Curtin University, Perth, 6845, Australia; Department of Earth & Planetary Sciences, McGill University, 3450 Rue University, Montréal, Québec H3A 0E8, Canada; Department of Earth Sciences, St. Francis Xavier University, Antigonish, B2G 2W5, Canada; Instituto Geológico y Minero de España (IGME), Ríos Rosas 23, Madrid, 28003, Spain; Department of Earth & Atmospheric Sciences, University of Alberta, Edmonton, AB 26G 2E3, Canada; State Key Laboratory of Continental Dynamics, Department of Geology, Northwest University, Xi’an, China; Institute of the Earth’s Crust, Siberian Branchof the Russian Academy of Sciences, ul. Lermontova 128, Irkutsk, 664033, Russian Federation
推荐引用方式 GB/T 7714	Wu L.,Murphy J.B.,Quesada C.,et al. The amalgamation of Pangea: Paleomagnetic and geological observations revisited[J],2021,133(2021-03-04).
APA	Wu L..,Murphy J.B..,Quesada C..,Li Z.-X..,Waldron J.W.F..,...&Collins W.J..(2021).The amalgamation of Pangea: Paleomagnetic and geological observations revisited.Bulletin of the Geological Society of America,133(2021-03-04).
MLA	Wu L.,et al."The amalgamation of Pangea: Paleomagnetic and geological observations revisited".Bulletin of the Geological Society of America 133.2021-03-04(2021).