Ku, Teh-Lung; Southon, John R; Vogel, John S; Liang, Z C; Kusakabe, M; Nelson, D Erle (1986): (Table 1) 10 Beryllium and CaCO3 at DSDP Holes 86-576B, 86-576, and 86-578 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.802441, Supplement to: Ku, T-L et al. (1985): 10Be distributions in Deep Sea Drilling Project Site 576 and Site 578 sediments studied by accelerator mass spectrometry. In: Heath GR; Burckle LH; et al. (eds.), Initial Reports of the Deep Sea Drilling Project, Washington (U.S. Govt. Printing Office), 86, 539-546, https://doi.org/10.2973/dsdp.proc.86.122.1985
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Abstract:
Extension of the 10Be geochronology for deep-sea sediments beyond the limit of late Pliocene age found in published works has been attempted. The results obtained on sediments from Deep Sea Drilling Project (DSDP) Sites 576 and 578 of Leg 86 suggest the feasibility of dating sediments as old as 12 to 15 m.y. At both sites, there have been large changes in sedimentation rate, with the Pleistocene sediments accumulating several times faster than those of the Pliocene, which in turn were deposited several times more rapidly than the late Miocene sediments. The Pleistocene-Pliocene section is considerably thicker in Hole 578 than in Hole 576B: the respective depths for the 7 m.y. time boundary in the two holes are about 125 and about 25 m. These 10Be-based age estimates are in agreement with the paleomagnetic stratigraphies established for the two sites. The suggested enhancement in the oceanic deposition of 10Be before 7 to 9 m.y. ago, as noticed in manganese crusts, has found tentative support from the present sedimentary records. A preliminary search for 10Be production variation during a geomagnetic field reversal has been conducted. In Hole 578, an enhanced 10Be concentration is found in a sample close to the Brunhes/Matuyama reversal boundary. More detailed and systematic measurements are required to confirm this observation, which bears on the detailed behavior of the geomagnetic field during the reversal.
Project(s):
Deep Sea Drilling Project (DSDP)
Coverage:
Median Latitude: 32.879400 * Median Longitude: 160.060000 * South-bound Latitude: 32.356000 * West-bound Longitude: 151.629000 * North-bound Latitude: 33.926000 * East-bound Longitude: 164.275700
Date/Time Start: 1982-05-16T00:00:00 * Date/Time End: 1982-05-27T00:00:00
Minimum DEPTH, sediment/rock: 0.49 m * Maximum DEPTH, sediment/rock: 150.28 m
Event(s):
86-576 * Latitude: 32.356000 * Longitude: 164.275700 * Date/Time: 1982-05-16T00:00:00 * Elevation: -6217.0 m * Penetration: 69.2 m * Recovery: 68.5 m * Location: North Pacific * Campaign: Leg86 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 8 cores; 69.2 m cored; 0 m drilled; 99 % recovery
86-576B * Latitude: 32.356200 * Longitude: 164.275300 * Date/Time: 1982-05-16T00:00:00 * Elevation: -6217.0 m * Penetration: 74.8 m * Recovery: 74.1 m * Location: North Pacific * Campaign: Leg86 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 9 cores; 74.8 m cored; 0 m drilled; 99 % recovery
86-578 * Latitude: 33.926000 * Longitude: 151.629000 * Date/Time: 1982-05-27T00:00:00 * Elevation: -6010.0 m * Penetration: 176.8 m * Recovery: 165 m * Location: North Pacific * Campaign: Leg86 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 20 cores; 167.8 m cored; 0 m drilled; 98.3 % recovery
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | ||||
| 2 | Sample code/label | Sample label | Ku, Teh-Lung | DSDP/ODP/IODP sample designation | ||
| 3 | DEPTH, sediment/rock | Depth sed | m | Geocode – mbsf | ||
| 4 | Calcium carbonate | CaCO3 | % | Ku, Teh-Lung | Atomic absorption spectrometry (AAS) | |
| 5 | Beryllium-10/Beryllium-9 ratio | 10Be/9Be | Ku, Teh-Lung | see reference(s) | *10**-11; Atom ratios before correction for blank which has a ratio of (1.7 ± 0.2) * 10**-13 | |
| 6 | Beryllium-10/Beryllium-9, standard deviation | 10Be/9Be std dev | ± | Ku, Teh-Lung | see reference(s) | |
| 7 | Beryllium-10 | 10Be | 109 atoms/g | Ku, Teh-Lung | see reference(s) | |
| 8 | Beryllium-10, standard deviation | 10Be std dev | ± | Ku, Teh-Lung | see reference(s) |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
201 data points