Dummann, Wolf; Steinig, Sebastian; Hofmann, Peter; Flögel, Sascha; Osborne, Anne H; Frank, Martin; Herrle, Jens O; Bretschneider, Lisa; Sheward, Rosie M; Wagner, Thomas (2022): Early Cretaceous sea water and detrial Nd isotope signatures at DSDP Sites 25-249, 36-327,40- 361, 71-511 and ODP Site 113-693 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.943507
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Abstract:
This data set comprises radiogenic neodymium (Nd) isotope signatures of past deep water masses and detrital matter in the Early Cretaceous (Barremian-Albian) South Atlantic Ocean and Southern Ocean, recorded at Deep Sea Drilling Project (DSDP) Sites 249, 327, 361, and 511 and Ocean Drilling Project (ODP) Site 693. Deep water Nd isotope compositions were leached from authigenic ferromanganese coatings of bulk sediment particles. Detrital Nd isotope signatures were obtained from residues of the sediment leaching procedures after dissolution via alkaline fusion. Age estimates for individual samples were calculated based on biostratigraphic and carbon isotope stratigraphic age constraints and calibrated to the time GTS2012 time scale of Gradstein et al. (2012).
Related to:
Dummann, Wolf; Steinig, Sebastian; Hofmann, Peter; Flögel, Sascha; Frank, Martin; Herrle, Jens O; Bretschneider, Lisa; Sheward, Rosie M; Wagner, Thomas (2020): The impact of Early Cretaceous gateway evolution on ocean circulation and organic carbon burial in the emerging South Atlantic and Southern Ocean basins. Earth and Planetary Science Letters, 530, 115890, https://doi.org/10.1016/j.epsl.2019.115890
Project(s):
Deep Sea Drilling Project (DSDP)
Ocean Drilling Program (ODP)
Funding:
German Research Foundation (DFG), grant/award no. HO2188/9: Evolving carbon sinks in the young South Atlantic: Drivers of global climate in the early Cretaceous greenhouse?
Coverage:
Median Latitude: -47.544800 * Median Longitude: -11.360680 * South-bound Latitude: -70.832000 * West-bound Longitude: -46.971700 * North-bound Latitude: -29.949800 * East-bound Longitude: 36.077000
Date/Time Start: 1972-08-18T00:00:00 * Date/Time End: 1987-02-05T03:15:00
Minimum DEPTH, sediment/rock: 188.80 m * Maximum DEPTH, sediment/rock: 1219.89 m
Event(s):
25-249 * Latitude: -29.949800 * Longitude: 36.077000 * Date/Time: 1972-08-18T00:00:00 * Elevation: -2098.0 m * Penetration: 412 m * Recovery: 221.4 m * Location: Indian Ocean//RIDGE * Campaign: Leg25 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 33 cores; 285 m cored; 0 m drilled; 77.7 % recovery
36-327 * Latitude: -50.871300 * Longitude: -46.783700 * Date/Time: 1974-04-13T00:00:00 * Elevation: -2400.0 m * Penetration: 5 m * Recovery: 5.4 m * Location: South Atlantic/PLATEAU * Campaign: Leg36 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 1 cores; 5 m cored; 0 m drilled; 109 % recovery
40-361 * Latitude: -35.066200 * Longitude: 15.448500 * Date/Time: 1975-01-05T00:00:00 * Elevation: -4549.0 m * Penetration: 1314 m * Recovery: 230.2 m * Location: South Atlantic Ocean * Campaign: Leg40 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 49 cores; 465.5 m cored; 0 m drilled; 49.5 % recovery
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Dummann, Wolf | |||
| 2 | Sample code/label | Sample label | Dummann, Wolf | DSDP/ODP/IODP sample designation | ||
| 3 | DEPTH, sediment/rock | Depth sed | m | Dummann, Wolf | Geocode – mcd | |
| 4 | Age | Age | Ma | Dummann, Wolf | Age model, Gradstein et al. (2012) GTS2012 | |
| 5 | AGE | Age | ka BP | Dummann, Wolf | Age model, Gradstein et al. (2012) GTS2012 | Geocode |
| 6 | Neodymium-143/Neodymium-144 ratio | 143Nd/144Nd | Dummann, Wolf | seawater, obtained from leaching of bulk sediments | ||
| 7 | ε-Neodymium | ε-Nd | Dummann, Wolf | Calculated | seawater | |
| 8 | ε-Neodymium, standard deviation | ε-Nd std dev | ± | Dummann, Wolf | Calculated, 2 sigma | seawater |
| 9 | ε-Neodymium (T) | ε-Nd(T) | Dummann, Wolf | Corrected | seawater corrected for the in-situ decay of 147Sm | |
| 10 | Neodymium-143/Neodymium-144 ratio | 143Nd/144Nd | Dummann, Wolf | detrial matter | ||
| 11 | ε-Neodymium | ε-Nd | Dummann, Wolf | Calculated | detrial matter | |
| 12 | ε-Neodymium, standard deviation | ε-Nd std dev | ± | Dummann, Wolf | Calculated, 2 sigma | detrial matter |
| 13 | ε-Neodymium (T) | ε-Nd(T) | Dummann, Wolf | Corrected | detrial matter corrected for the in-situ decay of 147Sm |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
490 data points