Birthdate for the lapetus Ocean? A precise U-Pb zircon and baddeleyite age for the Long Range dikes, southeast Labrador

Research Article| July 01, 1989 Birthdate for the lapetus Ocean? A precise U-Pb zircon and baddeleyite age for the Long Range dikes, southeast Labrador Sandra L. Kamo; Sandra L. Kamo 1Jack Satterly Geochronology Laboratory, Royal Ontario Museum, 100 Queen's Park, Toronto, Ontario M5S 2C6, Canada Search for other works by this author on: GSW Google Scholar Charles F. Gower; Charles F. Gower 2Newfoundland Department of Mines and Energy, P.O. Box 4750, St. John's, Newfoundland A1C 5T7, Canada Search for other works by this author on: GSW Google Scholar Thomas E. Krogh Thomas E. Krogh 1Jack Satterly Geochronology Laboratory, Royal Ontario Museum, 100 Queen's Park, Toronto, Ontario M5S 2C6, Canada Search for other works by this author on: GSW Google Scholar Author and Article Information Sandra L. Kamo 1Jack Satterly Geochronology Laboratory, Royal Ontario Museum, 100 Queen's Park, Toronto, Ontario M5S 2C6, Canada Charles F. Gower 2Newfoundland Department of Mines and Energy, P.O. Box 4750, St. John's, Newfoundland A1C 5T7, Canada Thomas E. Krogh 1Jack Satterly Geochronology Laboratory, Royal Ontario Museum, 100 Queen's Park, Toronto, Ontario M5S 2C6, Canada Publisher: Geological Society of America First Online: 02 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (1989) 17 (7): 602–605. https://doi.org/10.1130/0091-7613(1989)017<0602:BFTLOA>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 Sandra L. Kamo, Charles F. Gower, Thomas E. Krogh; Birthdate for the lapetus Ocean? A precise U-Pb zircon and baddeleyite age for the Long Range dikes, southeast Labrador. Geology 1989;; 17 (7): 602–605. doi: https://doi.org/10.1130/0091-7613(1989)017<0602:BFTLOA>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 Mafic dike swarms represent direct evidence of early tensional environments that may have eventually led to ocean formation. The first precise U-Pb zircon and baddeleyite age of 615 ±2 Ma for a Long Range southeastern Labrador, could mark the beginning of Iapetus Ocean formation. Baddeleyite (ZrO2) is more widespread than previously recognized. It is ideal for use with the U-Pb system because it has low initial common lead and sufficient uranium levels, and it does not lose significant radiogenic lead with time. Baddeleyite therefore provides a unique opportunity for dating dikes associated with rift-related events with un-precedented accuracy. 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.