Berger, Wolfgang H; Yasuda, Memorie K; Bickert, Torsten; Wefer, Gerold; Takayama, Toshiaki (1994): (Table 1) Stratigraphic datums from ODP Site 130-806 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.711811
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Abstract:
A 2 m.y. oxygen isotope record of Globigerinoides sacculifer from the Ontong Java Plateau, based on cores from Ocean Drilling Program Leg 130, is dated by matching variations to an orbital template. The procedure allows us to present the most complete Quaternary record available for the western equatorial Pacific. The template-generating algorithm describes a balance between growth and melting of ice. Following basic Milankovitch theory, ice growth is taken as constant, while melting is taken to depend on summer insolation, current ice mass, and average past ice mass. Template settings must be changed once, between 1 and 1.2 Ma, to reflect a major shift in climate. Template fits are strikingly good over much of the record and can be used to detect and fill gaps from core breaks and other disturbances. One result of template dating is an exact age for the Brunhes-Matuyama magnetic reversal boundary, at 790+/-5 ka, as well as several other precise dates (900 ka for the middle Pleistocene climate shift; 1070, 1240, and 1450 ka for isotope stages 31, 37, and 47, respectively). Sedimentation rates fluctuate between 18 and 28 m/m.y., a ca. 400 ka cycle being the most prominent. Major anomalies arise within the transitional regime (1.2 to 1 Ma). The origin of the cycles is unknown; we propose productivity variations in the western equatorial Pacific.
Related to:
Berger, Wolfgang H; Yasuda, Memorie K; Bickert, Torsten; Wefer, Gerold; Takayama, Toshiaki (1994): Quaternary time scale for the Ontong Java Plateau: Milankovitch template for Ocean Drilling Program Site 806. Geology, 22(5), 463-467, https://doi.org/10.1130/0091-7613(1994)022%3C0463:QTSFTO%3E2.3.CO;2
Project(s):
Ocean Drilling Program (ODP)
Coverage:
Median Latitude: 0.318583 * Median Longitude: 159.361000 * South-bound Latitude: 0.318500 * West-bound Longitude: 159.361000 * North-bound Latitude: 0.318667 * East-bound Longitude: 159.361000
Date/Time Start: 1990-02-17T00:00:00 * Date/Time End: 1990-02-25T00:00:00
Minimum DEPTH, sediment/rock: 0.30 m * Maximum DEPTH, sediment/rock: 38.15 m
Event(s):
130-806 * Latitude: 0.318667 * Longitude: 159.361000 * Date/Time Start: 1990-02-17T00:00:00 * Date/Time End: 1990-02-25T00:00:00 * Elevation: -2520.5 m * Penetration: 1603.2 m * Recovery: 1275.9 m * Location: North Pacific Ocean * Campaign: Leg130 * Basis: Joides Resolution * Method/Device: Composite Core (COMPCORE) * Comment: 149 cores; 1414.4 m cored; 0 m drilled; 90.2% recovery
130-806B * Latitude: 0.318500 * Longitude: 159.361000 * Date/Time Start: 1990-02-18T21:00:00 * Date/Time End: 1990-02-23T01:30:00 * Elevation: -2519.9 m * Penetration: 743.1 m * Recovery: 666.36 m * Location: North Pacific Ocean * Campaign: Leg130 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 78 cores; 743.1 m cored; 0 m drilled; 89.7 % recovery
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | ||||
| 2 | AGE | Age | ka BP | Geocode | ||
| 3 | DEPTH, sediment/rock | Depth sed | m | Geocode | ||
| 4 | Age, dated standard deviation | Age dated std dev | ± | Berger, Wolfgang H | ||
| 5 | Age, dated | Age dated | ka | Berger, Wolfgang H | from Ar-Ar dating | |
| 6 | Datum level | DL | Berger, Wolfgang H | |||
| 7 | Comment | Comment | Berger, Wolfgang H |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
57 data points