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Detailed File Information |
Description
Groundmass 40Ar/39Ar age for the Pacific oceanic floor at ODP Site 1149D in the Nadezhda basin. Sample 1149D-10R-1 44-48 cm is sampled from the basaltic basement at 350 mbsf. This experiment has been carried twice to enhance the resolution of the 40Ar/39Ar age plateau. 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 129 - 127 Ma, Cretaceous |
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Location 31º 18.79' N143º 24.03' E, Pacific Ocean, West Pacific, Nadezhda basin |
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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 ODP Leg 185, Site 1149D, 40Ar/39Ar geochronology, argon, K/Ar, basement basalts, tholeiites, ArArCALC, Pacific plate, groundmass, M11 polarity chron |
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Project -- G-cubed.org Themes -- Oceanic Inputs to the Subduction Factory This theme focuses on the raw materials fed into the subduction factory. Papers may emphasize the geophysical and geochemical aging of the oceanic crust, the composition of marine sediments entering trenches, seawater fluxes into layers 1-3 of the oceanic plate, novel geochemical tracers, and results from recent ODP drilling. |
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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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