Loubere, Paul (1987): (Table 1) Datum-levels from DSDP Hole 80-548 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.761043, Supplement to: Loubere, P (1987): Late Pliocene variations in the carbon isotope values of North Atlantic benthic Foraminifera: Biotic control of the isotopic record? Marine Geology, 76, 45-56, https://doi.org/10.1016/0025-3227(87)90016-8
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Abstract:
Analyses of benthic Foraminifera carbon isotope values were made in 172 samples from the Late Pliocene at DSDP Site 548 which is located in the Northeast Atlantic on the continental slope southwest of Ireland (1253 m water depth). The carbon isotope record is quite stable from about 3.4 to 2.5 Ma, and contrasts with the record at Site 552A in the North Atlantic (2311 m water depth) which is much more variable for this time period. The carbon record at Site 548 is also consistently more negative than that of Site 552A. After 2.5 Ma the benthic carbon isotope record of Uvigerina at Site 548 becomes extremely variable with large negative deviations. These isotopic variations might be associated with paleoceanic circulation changes caused by glaciation between 2.5 and 2 Ma. However, paired analyses of Uvigerina and Cibicidoides species for 38 samples within the glacial interval, yield carbon isotopic records which are quite different from one another. The Uvigerina record contains larger negative deviations than does the Cibicidoides record. Also, the isotopic difference between Uvigerina and Cibicidoides increases during glaciations and in a long term trend from 2.5 to 2.0 Ma. The lack of covariance between the Uvigerina and Cibicidoides carbon isotope records indicates that, after 2.5 Ma at Site 548, biotic factors influenced the benthic isotopic record.
Related to:
Backman, Jan (1984): Cenozoic calcareous nannofossil biostratigraphy from the North-Eastern Atlantic Ocean-Deep Sea Drilling Project Leg 81. In: Roberts, DG; Schnittker, D; et al. (eds.), Initial Reports of the Deep Sea Drilling Project, Washington (U.S. Govt. Printing Office), 81, 403-428, https://doi.org/10.2973/dsdp.proc.81.105.1984
Backman, Jan; Shackleton, Nicholas J (1983): Quantitative biochronology of Pliocene and early Pleistocene calcareous nannofossils from the Atlantic, Indian and Pacific oceans. Marine Micropaleontology, 8(2), 141-170, https://doi.org/10.1016/0377-8398(83)90009-9
Hays, James D; Saito, T; Opdyke, Neil D; Burckle, Lloyd H (1969): Pliocene-Pleistocene sediments of the equatorial Pacific: their paleomagnetic, biostratigraphic, and climatic record. Geological Society of America Bulletin, 80(8), 1481-1514, https://doi.org/10.1130/0016-7606(1969)80%5B1481:PSOTEP%5D2.0.CO;2
Keigwin, Lloyd D (1987): Pliocene Stable-Isotope Record of Deep Sea Drilling Project Site 606: Sequential Events of 18O Enrichment Beginning at 3.1 Ma. 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, 911-920, https://doi.org/10.2973/dsdp.proc.94.127.1987
Loubere, Paul (1987): Changes in mid-depth North Atlantic and Mediterranean circulation during the Late Pliocene - Isotopic and sedimentological evidence. Marine Geology, 77(1-2), 15-38, https://doi.org/10.1016/0025-3227(87)90081-8
Mazzei, Roberto; Raffi, Isabella; Rio, Domenico; Hamilton, Norman; Cita, Maria Bianca (1979): Calibration of Late Neogene calcareous planktonic datum planes with the paleomagnetic record of Site 397 abd correlation with Moroccan and Mediterranean sections. In: von Rad, U & Ryan, WBF (eds.), Initial Reports Deep Sea Drilling Project, Washington (U.S. Government Printing Office), 47, 375-389, https://doi.org/10.2973/dsdp.proc.47-1.109.1979
Ness, Gordon; Levi, Shaul; Couch, Richard (1980): Marine magnetic anomaly timescales for the Cenozoic and Late Cretaceous: A précis, critique, and synthesis. Reviews of Geophysics, 18(4), 753-770, https://doi.org/10.1029/RG018i004p00753
Raymo, Maureen E; Ruddiman, William F; Clement, Bradford M (1987): Pliocene-Pleistocene paleoceanography of the North Atlantic at Deep Sea Drilling Project Site 609. 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, 895-901, https://doi.org/10.2973/dsdp.proc.94.125.1987
Project(s):
Deep Sea Drilling Project (DSDP)
Coverage:
Latitude: 48.915800 * Longitude: -12.164000
Date/Time Start: 1981-06-10T00:00:00 * Date/Time End: 1981-06-10T00:00:00
Minimum DEPTH, sediment/rock: 100.35 m * Maximum DEPTH, sediment/rock: 186.00 m
Event(s):
80-548 * Latitude: 48.915800 * Longitude: -12.164000 * Date/Time: 1981-06-10T00:00:00 * Elevation: -1251.0 m * Penetration: 211 m * Recovery: 210.2 m * Location: North Atlantic/SPUR * Campaign: Leg80 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 35 cores; 211 m cored; 0 m drilled; 99.6 % recovery
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | DEPTH, sediment/rock | Depth sed | m | Geocode – mbsf | ||
| 2 | Depth, top/min | Depth top | m | Loubere, Paul | ||
| 3 | Depth, bottom/max | Depth bot | m | Loubere, Paul | ||
| 4 | Ageprofile Datum Description | Ageprof dat des | Loubere, Paul | LAD = last appearance datum | ||
| 5 | Age model | Age model | ka | Loubere, Paul | ||
| 6 | Age, maximum/old | Age max | ka | Loubere, Paul | ||
| 7 | Age, comment | Comm | Loubere, Paul |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
36 data points