Paleomagnetism and tectonic significance of the Goble Volcanic Series, southwestern Washington

Research Article| April 01, 1979 Paleomagnetism and tectonic significance of the Goble Volcanic Series, southwestern Washington Myrl E. Beck, Jr.; Myrl E. Beck, Jr. 1Department of Geology, Western Washington University, Bellingham, Washington 98255 Search for other works by this author on: GSW Google Scholar Cynthia D. Burr Cynthia D. Burr 1Department of Geology, Western Washington University, Bellingham, Washington 98255 Search for other works by this author on: GSW Google Scholar Author and Article Information Myrl E. Beck, Jr. 1Department of Geology, Western Washington University, Bellingham, Washington 98255 Cynthia D. Burr 1Department of Geology, Western Washington University, Bellingham, Washington 98255 Publisher: Geological Society of America First Online: 02 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (1979) 7 (4): 175–179. https://doi.org/10.1130/0091-7613(1979)7<175:PATSOT>2.0.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 Myrl E. Beck, Cynthia D. Burr; Paleomagnetism and tectonic significance of the Goble Volcanic Series, southwestern Washington. Geology 1979;; 7 (4): 175–179. doi: https://doi.org/10.1130/0091-7613(1979)7<175:PATSOT>2.0.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 The mean direction of remanent magnetism of the upper Eocene-Oligocene Goble Volcanic Series, located on the western flank of the Cascades in southwestern Washington, points about 25° east of the expected middle Tertiary geomagnetic field direction for the area. This deflection is in the same sense as discrepant paleomagnetic directions reported for Tertiary rocks from the Oregon Coast Range, but seems to be somewhat less in magnitude. From their major-element chemistry and their structural location, it appears that the Goble flows may be an early arc assemblage that was ancestral to the present Cascade magmatic arc, although origin as an oceanic basalt assemblage akin to the Yachats basalts and the Siletz River and Tillamook Volcanic Series of the Oregon Coast Range cannot be ruled out. Whatever its origin, the Goble block has been rotated about a pivot located somewhere nearby, either as part of the Coast Range or as an independent microcontinental block. 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.