Ozima, Minoru; Kaneoka, Ichiro; Ujiie, H (1977): (Table 1) Age determinations of basement rocks of DSDP Leg 31 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.770339, Supplement to: Ozima, M et al. (1977): 40Ar-39Ar age of rocks, and the development mode of the Philippin Sea. Nature, 267(5614), 816-818, https://doi.org/10.1038/267816a0
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Abstract:
The origin and development of the Phillipine Sea have been central issues in tectonic studies of a marginal sea: the deep-sea drilling project (DSDP), Leg 31, was primarily intended to resolve the question. Unfortunately, at only two of the Leg 31 sites (292 and 296) were microfossils indicating the age of the basement recovered, so the age of the ocean basin, had to be deduced by dating the drilled basement rocks.
Project(s):
Deep Sea Drilling Project (DSDP)
Coverage:
Median Latitude: 22.022975 * Median Longitude: 128.451450 * South-bound Latitude: 15.818500 * West-bound Longitude: 124.094200 * North-bound Latitude: 29.340200 * East-bound Longitude: 133.525300
Date/Time Start: 1973-06-26T00:00:00 * Date/Time End: 1973-07-10T00:00:00
Minimum Elevation: -5784.0 m * Maximum Elevation: -2920.0 m
Event(s):
31-292 * Latitude: 15.818500 * Longitude: 124.650800 * Date/Time: 1973-06-26T00:00:00 * Elevation: -2943.0 m * Penetration: 443.5 m * Recovery: 242.8 m * Location: North Pacific/Philippine Sea/CONT RISE * Campaign: Leg31 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 46 cores; 434 m cored; 9.5 m drilled; 56 % recovery
31-293 * Latitude: 20.354200 * Longitude: 124.094200 * Date/Time: 1973-07-01T00:00:00 * Elevation: -5599.0 m * Penetration: 563.5 m * Recovery: 71.5 m * Location: North Pacific/Philippine Sea/BASIN * Campaign: Leg31 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 19 cores; 171 m cored; 22 m drilled; 41.8 % recovery
31-294 * Latitude: 22.579000 * Longitude: 131.535500 * Date/Time: 1973-07-06T00:00:00 * Elevation: -5784.0 m * Penetration: 118 m * Recovery: 23.2 m * Location: North Pacific/Philippine Sea/BASIN * Campaign: Leg31 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 6 cores; 48.5 m cored; 3 m drilled; 47.8 % recovery
Comment:
AGE (Ka BP) is the total age.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | ||||
| 2 | Sample code/label | Sample label | Ozima, Minoru | |||
| 3 | Rock type | Rock | Ozima, Minoru | |||
| 4 | AGE | Age | ka BP | Geocode | ||
| 5 | Age, dated | Age dated | ka | Ozima, Minoru | plateau age | |
| 6 | Age, dated standard deviation | Age dated std dev | ± | Ozima, Minoru | plateau age | |
| 7 | Percentage | Perc | % | Ozima, Minoru | Plateau age deined for the fraction of 38Ar released | |
| 8 | Age, dated | Age dated | ka | Ozima, Minoru | Isochron age | |
| 9 | Age, dated standard deviation | Age dated std dev | ± | Ozima, Minoru | Isochron age | |
| 10 | - | - | Ozima, Minoru | J value | ||
| 11 | Age model | Age model | ka | Ozima, Minoru | best age for the ocean basin |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
34 data points