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Detailed File Information |
Description
Groundmass 40Ar/39Ar age for Osbourn seamount in the Louisville seamount trail in the South Pacific basin. This seamount marks the oldest seamount at the northwestern end of this seamount trail that is about to be subducted in the Tonga subduction zone. Sample SOTW-9-58-1a is a basanite sampled at 2443 m depth. This ZIP archive contains the ArArCALC v2.2 age calculation file and the same file in the Microsoft Excel 2000 format. |
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Geological Age Range and Timescale 76.7 Ma, Thanetian |
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Location 25º 31.80' S174º 02.40' W, Pacific Ocean, South Pacific, Osbourn Seamount, Louisville seamount trail |
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Instructions The ArArCALC.log file is included in this ZIP archive containing the definition of the irradiation constants and is required to reproduce the calculations in ArArCALC. To do so replace the ArArCALC.log file in the ArArCALC\Program directory. Be certain to make a back-up of your current ArArCALC.log file before replacing this file on your system. |
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Keywords 40Ar/39Ar geochronology, argon, K/Ar, ArArCALC, Pacific plate, groundmass, basanite, seamount, guyot |
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Copyright Owner Anthony A.P. Koppers Institute of Geophysics and Planetary Physics Scripps Institution of Oceanography University of California, San Diego La Jolla, CA 92093-0225, USA
Phone: +1 858 534 8771 Fax: +1 858 534 8090 |
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