Radiometric Ages of Kodiak Seamount and Giacomini Guyot, Gulf of Alaska: Implications for Circum-Pacific Tectonics

• Published in: Science
• Main Authors: Turner, Donald L., Forbes, Robert B., Naeser, Charles W.
• Format: Article in Journal/Newspaper
• Language: English
• Published: American Association for the Advancement of Science (AAAS) 1973
• Subjects: Gulf of Alaska; Kodiak Seamount; Pacific; Pratt; Kodiak; Alaska
• Online Access: http://dx.doi.org/10.1126/science.182.4112.579; https://www.science.org/doi/pdf/10.1126/science.182.4112.579

Kodiak Seamount and Giacomini Guyot have been dated at 22.6 ± 1.1 and 19.9 ± 1.0 [2σ (standard deviation)] × 10 6 years, respectively. Concordant whole-rock and plagioclase potassium-argon dates and fission-track apatite ages demonstrate that significant quantities of excess radiogenic 40 Ar are not...