Morley, Joseph J (1987): (Table 1) Age and sedimentation rates of Pleistocene/Holocene sequences at DSDP Sites 86-580 and 94-611 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.788586, Supplement to: Morley, JJ (1987): Comparison of the Pleistocene records of the radiolarian Cycladophora davisiana at high-latitude sites of the Deep Sea Drilling Project. In: Ruddiman, WF; Kidd, RB; Thomas, E; et al. (eds.), Initial Reports of the Deep Sea Drilling Project, Washington (U.S. Govt. Printing Office), 94, 889-894, https://doi.org/10.2973/dsdp.proc.94.124.1987
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Abstract:
The recovery from the North Atlantic (Site 611) of a continuous Pleistocene sedimentary record with a siliceous microfaunal component made it possible to compare the high-latitude abundance pattern of the radiolarian species Cycladophora davisiana in the Atlantic with that produced from analyses of a high-latitude record (Site 580) from the northwest Pacific. Previous studies had shown that the late Pleistocene (0-0.45 Ma) abundance variations of this species in these high-latitude regions were similar.
Cycladophora davisiana maxima in the North Atlantic record reach abundance levels three to four times higher than C. davisiana maxima registered in sediments from the northwest Pacific site. This difference in magnitude of abundance peaks is most likely an effect of the more northerly location of Site 611 (53°N) compared with that of Site 580 (42°N), since high-latitude time-slice studies have shown a direct relationship between increasing latitude and C. davisiana abundance. Discontinuous preservation of radiolarians in sediments from North Atlantic Site 611 allows only tentative correlation of the North Atlantic and northwest Pacific C. davisiana abundance curves. These correlations are confined to those portions of the cores where ages are tightly constrained by magnetic boundaries, and to intervals with comparable sedimentation rates.
Project(s):
Deep Sea Drilling Project (DSDP)
Coverage:
Median Latitude: 47.231950 * Median Longitude: -118.168133 * South-bound Latitude: 41.624500 * West-bound Longitude: 153.976300 * North-bound Latitude: 52.839400 * East-bound Longitude: -30.312567
Date/Time Start: 1982-06-06T00:00:00 * Date/Time End: 1983-08-06T00:00:00
Minimum DEPTH, sediment/rock: 20.13 m * Maximum DEPTH, sediment/rock: 82.33 m
Event(s):
86-580_Site * Latitude: 41.624500 * Longitude: 153.976300 * Date/Time: 1982-06-06T00:00:00 * Elevation: -5375.0 m * Penetration: 1.553 m * Recovery: 1.404 m * Location: North Pacific * Campaign: Leg86 * Basis: Glomar Challenger * Method/Device: Composite Core (COMPCORE) * Comment: 17 cores; 155.3 m cored; 0 m drilled; 90.4% recovery
94-611_Site * Latitude: 52.839400 * Longitude: -30.312567 * Date/Time: 1983-08-06T00:00:00 * Penetration: 10.481 m * Recovery: 7.075 m * Location: North Atlantic/RIDGE * Campaign: Leg94 * Basis: Glomar Challenger * Method/Device: Composite Core (COMPCORE) * Comment: 88 cores; 805.1 m cored; 38.4 m drilled; 87.9% recovery
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | ||||
| 2 | DEPTH, sediment/rock | Depth sed | m | Geocode – mbsf | ||
| 3 | Boundary description | Bound descr | Morley, Joseph J | |||
| 4 | Age model | Age model | ka | Morley, Joseph J | ||
| 5 | Sedimentation rate | SR | cm/ka | Morley, Joseph J |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
24 data points