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Barnes, David A; Thy, Peter; Renne, Paul (1992): (Table 2) Age determination of plagioclase, biotite and hornblende from blue tuffs an related strata of ODP Leg 127 samples. PANGAEA, https://doi.org/10.1594/PANGAEA.777132, In supplement to: Barnes, DA et al. (1992): Sedimentology, phenocryst chemistry, and age - Miocene “Blue Tuff”: Sites 794 and 796, Japan Sea. In: Pisciotto, KA; Ingle, JCJr.; von Breymann, MT; Barron, J; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 127/128(1), 115-130, https://doi.org/10.2973/odp.proc.sr.127128-1.185.1992

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Project(s):
Coverage:
Latitude: 40.190000 * Longitude: 138.231000
Date/Time Start: 1989-06-30T12:15:00 * Date/Time End: 1989-07-03T20:30:00
Minimum Elevation: -2822.0 m * Maximum Elevation: -2822.0 m
Event(s):
127-794B * Latitude: 40.190000 * Longitude: 138.231000 * Date/Time Start: 1989-06-30T12:15:00 * Date/Time End: 1989-07-03T20:30:00 * Elevation: -2822.0 m * Penetration: 549 m * Recovery: 87.4 m * Location: Japan Sea * Campaign: Leg127 * Basis: Joides Resolution * Device: Drilling/drill rig (DRILL) * Comment: 27 cores; 249.2 m cored; 0 m drilled; 35.1 % recovery
Comment:
Plagioclase grains from Site 794B were degassed at 0.3 W laser power output before fusion to help remove atmospheric Ar contamination. These data are corrected for mass discrimination, radioactive decay nucleogenic interferences, procedural blanks, and atmospheric contamination. 37Ar,38 Ar, and 39Ar as used to refer to the proportion of these isotopes derived by neutron activation of Ca, Cl, and K, respectively. Reported errors reflect uncertainties accrued from all corrections plus regression of isotopic data. Errors in the apparent ages do not reflect uncertainty in the age of the standard.
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethodComment
1Sample code/labelSample labelBarnes, David AODP sample designation
2Sample code/label 2Sample label 2Barnes, David A
3Mineral nameMineralBarnes, David A
4Argon-4040Ararbitrary unitsBarnes, David ALaser fusion[nA]
5Argon-37/Argon-3937Ar/39ArBarnes, David ALaser fusion
6Argon-38/Argon-3938Ar/39ArBarnes, David ALaser fusion
7Argon-40/Argon-3940Ar/39ArBarnes, David ALaser fusion
8Argon-4040Ar%Barnes, David ALaser fusion
9Age, datedAge datedkaBarnes, David AAge, 40Ar/39Ar Argon-Argon
10Age, dated standard deviationAge dated std dev±Barnes, David AAge, 40Ar/39Ar Argon-Argon1 sigma
Size:
220 data points

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