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Romans, Brian W; Parent, Andrew; Chilton, Kristin; van Peer, Tim E; Bohaty, Steven M; Spray, James; Wilson, Paul A (2024): Terrigenous grain size (sortable silt) and detrital provenance (Hf, Nd, Pb/Pb) data, Eocene-Oligocene, Newfoundland ridges drifts, IODP Sites 342-U1406 and 342-U1411 [dataset bundled publication]. PANGAEA, https://doi.org/10.1594/PANGAEA.965577

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Abstract:
This dataset consists of terrigenous grain-size data from Integrated Ocean Drilling Program (IODP) Sites 342-U1406 and 342-U1411 and lithogenic isotope (Hf, Nd, Pb/Pb) data from IODP Site 342-U1411. These two sites are in the Newfoundland ridges contourite drift complex and were cored during IODP Expedition 342 (Paleogene Newfoundland Drifts) in summer 2012. The grain-size data consists of 137 samples from Site 342-U1406 and 192 samples from Site 342-U1411 and was measured with a Micromeritics SediGraph 5120 particle size analyzer. The Hf and Nd data consists of 30 samples from Site 342-U1411 and were measured using a ThermoFisher Neptune multi-collector inductively coupled plasma mass spectrometer (MC-ICPMS). The Pb/Pb data consists of 23 samples from Site 342-U1411 were also measured using a ThermoFisher Neptune MC-ICPMS. All data were generated between the years 2014 and 2019. The timespan of the data set is from ~35 Ma to 26 Ma (9 Myr total duration). Sample resolution ranges and is up to one sample per 10-15 kyr during the Eocene-Oligocene Transition (EOT; 33.65-34.44 Ma) and intervals immediately prior (35-34.44 Ma) and immediately after (33.65-32.5 Ma). Sortable silt metrics (abundance and mean) were calculated from the grain-size data and used to reconstruct bottom-current and paleocirculation history. The lower-resolution lithogenic isotope data is used to infer sediment source (provenance) changes across the EOT.
Keyword(s):
circulation; contourites; Eocene-Oligocene Transition; North Atlantic; Paleoceanography; sortable silt
Supplement to:
Parent, Andrew; Chilton, Kristin; van Peer, Tim E; Bohaty, Steven M; Spray, James; Wilson, Paul A; Romans, Brian W (accepted): Eocene-Oligocene intensification of the Deep Western Boundary Current in the North Atlantic Ocean. Paleoceanography and Paleoclimatology
Coverage:
Median Latitude: 41.237629 * Median Longitude: -49.794395 * South-bound Latitude: 40.349820 * West-bound Longitude: -51.649990 * North-bound Latitude: 41.618322 * East-bound Longitude: -48.999000
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Size:
5 datasets

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Datasets listed in this bundled publication

  1. Romans, BW; Parent, A; Chilton, K et al. (2024): Terrigenous grain size as sortable silt from IODP Sites 342-U1406. https://doi.org/10.1594/PANGAEA.965570
  2. Romans, BW; Parent, A; Chilton, K et al. (2024): SediGraph particle size analyzer output (n=329 .txt files) from IODP Sites 342-U1406 and 342-U1411. https://doi.org/10.1594/PANGAEA.965572
  3. Romans, BW; Parent, A; Chilton, K et al. (2024): Lead ratios of IODP Site 342-U1411. https://doi.org/10.1594/PANGAEA.965576
  4. Romans, BW; Parent, A; Chilton, K et al. (2024): Terrigenous grain size as sortable silt from IODP Sites 342-U1411. https://doi.org/10.1594/PANGAEA.965571
  5. Romans, BW; Parent, A; Chilton, K et al. (2024): ε-Hafnium and ε-Neodymium from IODP Site 342-U1411. https://doi.org/10.1594/PANGAEA.965573