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| Detailed File Information |
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Description
This upload contains the 40Ar/39Ar geochronology age determination of sample 33-317A-32R-2W 25/35 (33-317A-32R-2W 25/35) from Manihiki Plateau in Western Pacific Ocean (Manihiki Plateau) and was calculated using the ArArCALC freeware. The preferred age of 116.50 ± 0.08 Ma is the combined age plateau and is interpreted as the eruption age of the sample. Combined eruption age plateau from the three lower eruption ages from Hole 317A. The age determination was carried out on a sample of basalt (plagioclase) in an incremental heating experiment and using the bulk laser heating extraction method. The analyses were run on a ARGUS-VI mass spectrometer and the ages were calculated relative to flux monitor FCT-NM (5A26-21) (sanidine) with an age of 28.201 ± 0.082 Ma. This sample was collected by Peter Davidson (davidspe@oregonstate.edu). Sample Description: Full standard leach + 5min 5% HF. Sample Treatment: Combination of the three eruption age samples from 317A.. |
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Geological Age Range and Timescale
41.72 - 41.61 Ma |
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Location
11º 00.09' S - 11º 00.09' S 162º 15.78' W - 162º 15.78' W, 33-317A-32R-2W 25/35, Pacific Ocean, Pacific Plate |
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Instructions
This ERDA upload contains four separate 40Ar/39Ar age calculation files generated with ArArCALC. Both the XLS and PDF files are for easy viewing in Microsoft Excel or Adobe Acrobat Reader, whereas the AGE file is readable by the ArArCALC software only and the XML file is generated for the GEOCHRON online database project. For full age calculation functionality it is recommended that you open the AGE file in the ArArCALC software that is available as freeware online at http://earthref.org/ArArCALC ... |
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Keywords
40Ar/39Ar, Geochronology, Radiometric Age Dating, K/Ar, Argon, Mass Spectrometry, ArArCALC, Data Reduction, 10.58052/IEPCD-33-317A-32R-2W-25-35 (IGSN), 33-317A STACK (N=3) (Experiment), ONTONG JAVA PLATEAU, DAVIDSON (20-INT-02) (Project), Coring>DrillCorer (Collection Method), Core Quarter Round (Collection Object), Igneous>Volcanic>Mafic (Rock Classification), Groundmass (Mineral Type), Plagioclase (Mineral Name), 100-180 µm (Grain Size), 8.55 mg (Sample Weight), Oceanic Plateau (Feature Type) |
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