Early Devonian paleomagnetic data from the Lower Devonian Karheen Formation suggest Laurentia-Baltica connection for the Alexander terrane

Research Article| August 01, 1995 Early Devonian paleomagnetic data from the Lower Devonian Karheen Formation suggest Laurentia-Baltica connection for the Alexander terrane David R. Bazard; David R. Bazard 1Department of Geology and Geological Engineering, University of Mississippi, University, Mississippi 38677 Search for other works by this author on: GSW Google Scholar Robert F. Butler; Robert F. Butler 2Department of Geosciences, University of Arizona, Tucson, Arizona 85721 Search for other works by this author on: GSW Google Scholar George Gehrels; George Gehrels 2Department of Geosciences, University of Arizona, Tucson, Arizona 85721 Search for other works by this author on: GSW Google Scholar Constance M. Soja Constance M. Soja 3Department of Geology, Colgate University, Hamilton, New York 13346 Search for other works by this author on: GSW Google Scholar Author and Article Information David R. Bazard 1Department of Geology and Geological Engineering, University of Mississippi, University, Mississippi 38677 Robert F. Butler 2Department of Geosciences, University of Arizona, Tucson, Arizona 85721 George Gehrels 2Department of Geosciences, University of Arizona, Tucson, Arizona 85721 Constance M. Soja 3Department of Geology, Colgate University, Hamilton, New York 13346 Publisher: Geological Society of America First Online: 02 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (1995) 23 (8): 707–710. https://doi.org/10.1130/0091-7613(1995)023<0707:EDPDFT>2.3.CO;2 Article history First Online: 02 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation David R. Bazard, Robert F. Butler, George Gehrels, Constance M. Soja; Early Devonian paleomagnetic data from the Lower Devonian Karheen Formation suggest Laurentia-Baltica connection for the Alexander terrane. Geology 1995;; 23 (8): 707–710. doi: https://doi.org/10.1130/0091-7613(1995)023<0707:EDPDFT>2.3.CO;2 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 Paleomagnetic data from 29 sites within the Lower Devonian Karheen Formation pass fold and reversal tests, and define two polarity zones that are correlative between two separate stratigraphic sections. We interpret this magnetization to be Early Devonian and thus propose a paleopole for the Alexander terrane that places the terrane at about 14° (north or south). Due to uncertainties of the Early Devonian parts of the North American and Gondwana apparent polar wander paths, several interpretations of the Early Devonian position of the Alexander terrane relative to either North America (Laurentia) or Gondwana are permissible. We use a combined data set of paleomagnetic, detrital zircon, and paleontological observations to narrow the paleogeographic options. Eastern Australia and the Scandinavian part of Baltica lie within the paleolatitude bands, and both are possible sources of Precambrian detrital zircon grains found in the Karheen Formation; however, paleontological data from the underlying Heceta Formation are only consistent with a position near northern Laurentia-Baltica. Therefore, the combined data sets indicate an Early Devonian position near Baltica. This content is PDF only. Please click on the PDF icon to access. First Page Preview Close Modal You do not have access to this content, please speak to your institutional administrator if you feel you should have access.