A stable Ediacaran Earth recorded by single silicate crystals of the ca. 565 Ma Sept-Îles intrusion

Research Article| February 01, 2015 A stable Ediacaran Earth recorded by single silicate crystals of the ca. 565 Ma Sept-Îles intrusion Richard K. Bono; Richard K. Bono 1Department of Earth and Environmental Sciences, University of Rochester, Rochester, New York 14627, USA Search for other works by this author on: GSW Google Scholar John A. Tarduno John A. Tarduno 1Department of Earth and Environmental Sciences, University of Rochester, Rochester, New York 14627, USA2Department of Physics & Astronomy, University of Rochester, Rochester, New York 14627, USA Search for other works by this author on: GSW Google Scholar Author and Article Information Richard K. Bono 1Department of Earth and Environmental Sciences, University of Rochester, Rochester, New York 14627, USA John A. Tarduno 1Department of Earth and Environmental Sciences, University of Rochester, Rochester, New York 14627, USA2Department of Physics & Astronomy, University of Rochester, Rochester, New York 14627, USA Publisher: Geological Society of America Received: 05 Sep 2014 Revision Received: 17 Nov 2014 Accepted: 21 Nov 2014 First Online: 09 Mar 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 © 2014 Geological Society of America Geology (2015) 43 (2): 131–134. https://doi.org/10.1130/G36247.1 Article history Received: 05 Sep 2014 Revision Received: 17 Nov 2014 Accepted: 21 Nov 2014 First Online: 09 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation Richard K. Bono, John A. Tarduno; A stable Ediacaran Earth recorded by single silicate crystals of the ca. 565 Ma Sept-Îles intrusion. Geology 2015;; 43 (2): 131–134. doi: https://doi.org/10.1130/G36247.1 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGeology Search Advanced Search Abstract The archetypical example of inertial interchange true polar wander (IITPW), the rapid rotation of the entire solid Earth by 90°, is based on two nearly orthogonal directions seen in paleomagnetic studies of the Sept-Îles (ca. 565 Ma) intrusion (Quebec, Canada). This motion has also been proposed as the driving force for the early Cambrian explosion of life. Others have challenged these interpretations, linking the data instead to flips between an axial and equatorial dipole field configuration. We examine this enigma using single silicate crystal paleomagnetic analyses. We conclude that only one of the previously reported magnetic directions is carried by single domain magnetic grains and can be considered primary. Thus, the Ediacaran diversification occurred on a rotationally stable Earth driven by biotic and longer term abiotic forcing. Whether IITPW ever occurred in the past on Earth remains uncertain. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.