Rea, David K; Janecek, Thomas R (1981): (Table 1) Mass-accumulation rates for the non-authigenic, inorganic, crystalline, eolian component of sediments recovered at DSDP Hole 62-463 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.819511, Supplement to: Rea, DK; Janecek, TR (1981): Mass-accumulation rates of the non-authigenic inorganic crystalline (Eolian) component of deep-sea sediments from the western Mid-Pacific Mountains, Deep Sea Drilling Project Site 463. In: Thiede, J; Vallier, TL; et al. (eds.), Initial Reports of the Deep Sea Drilling Project (U.S. Govt. Printing Office), 62, 653-659, https://doi.org/10.2973/dsdp.proc.62.125.1981
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Abstract:
Elevated regions in the central parts of ocean basins are excellent for study of accumulation of eolian material. The mass-accumulation rates of this sediment component appear to reflect changes in the influx of volcanic materials through the Early Cretaceous to Recent history of Deep Sea Drilling Project Site 463, on the Mid-Pacific Mountains. Four distinct episodes of eolian accumulation occurred during the Cretaceous: two periods of moderate accumulation, averaging about 0.2 to 0.3 g/cm**2/10**3 yr, 67 to 70.5 m.y. ago and 91 to 108 m.y. ago; a period of low accumulation, approximately 0.03 g/cm**2/10**3 yr, 70.5 to 90 m.y. ago; and a period of high accumulation, about 0.9 g/cm**2/10**3 yr, 109 to 117 m.y. ago (bottom of the hole). Much of the Cenozoic section is missing from Site 463. Upper Miocene to Recent sediments record an upward increase in accumulation rates, from less than 0.01 to about 0.044 g/cm**2/10**3 yr. The late Pliocene-Pleistocene peak may reflect the change to glacial-wind regimes, as well as an increase in volcanic source materials.
Project(s):
Deep Sea Drilling Project (DSDP)
Coverage:
Latitude: 21.350200 * Longitude: 174.667800
Date/Time Start: 1978-08-02T00:00:00 * Date/Time End: 1978-08-02T00:00:00
Minimum DEPTH, sediment/rock: 0.2 m * Maximum DEPTH, sediment/rock: 775.1 m
Event(s):
62-463 * Latitude: 21.350200 * Longitude: 174.667800 * Date/Time: 1978-08-02T00:00:00 * Elevation: -2525.0 m * Penetration: 822.5 m * Recovery: 305.5 m * Location: North Pacific/SEAMOUNT * Campaign: Leg62 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 92 cores; 820.5 m cored; 0 m drilled; 37.2 % recovery
Comment:
Sediment depth is given in mbsf. # indicate samples which had dried before arrival in our laboratory; for these samples the average of the porosity values of overlying and underlying samples was assigned. Empty cells mean no data.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Sample code/label | Sample label | Rea, David K | DSDP/ODP/IODP sample designation | ||
| 2 | DEPTH, sediment/rock | Depth sed | m | Geocode | ||
| 3 | Comment | Comment | Rea, David K | |||
| 4 | AGE | Age | ka BP | Geocode | ||
| 5 | Porosity | Poros | % vol | Rea, David K | Calculated, see reference(s) | |
| 6 | Density, dry bulk | DBD | g/cm3 | Rea, David K | Calculated, see reference(s) | |
| 7 | Sedimentation rate | SR | cm/ka | Rea, David K | see reference(s) | Linear |
| 8 | Accumulation rate, mass | MAR | g/cm2/ka | Rea, David K | see reference(s) | |
| 9 | Dust, aeolian | Dust | % | Rea, David K | Non-authigenic, inorganic, crystalline | |
| 10 | Accumulation rate, dust | DMAR | g/cm2/ka | Rea, David K | see reference(s) | Non-authigenic, inorganic, crystalline |
| 11 | Comment | Comment | Rea, David K | Non-authigenic, inorganic, crystalline, eolian component mass accumulation rate |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
707 data points