Suárez-Ibarra, Jaime Yesid; Dias, Bruna Borba; Petro, Sandro M; Frozza, Cristiane Fraga; Chaabane, Sonia; Chalk, Thomas B; Piotrowski, Alexander M; de Garidel-Thoron, Thibault; Pivel, Maria Alejandra G: Authigenic foraminiferal neodymium isotopes from core SIS-203, Holocene and LGM in the western South Atlantic [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.983124 (dataset in review)
Abstract:
Authigenic neodymium isotope (εNd) analyses were carried out on uncleaned mixed planktonic foraminifera. Around 60 mg of planktonic foraminifera shells were handpicked from the >150 μm fraction, crushed and ultrasonicated to remove clays without removal of the authigenic oxides. The cleaned samples were then dissolved in 1 M acetic acid and centrifuged before transferred to Teflon vials. The supernatants were dried-down before re-dissolution in 0.3 M nitric acid. Rare earth elements (REE) were separated from other elements using Eichrom TRUspec™ resin and neodymium was extracted from the other REE using Eichrom Lnspec™ resin using a method published by Larkin et al. (2021). All samples were analysed on a Thermo Neptune Plus multi-collector inductively-coupled plasma mass spectrometer (MC-ICP-MS) at the University of Cambridge (Department of Earth Sciences). Measurements were corrected for mass fractionation to a 146Nd/144Nd ratio of 0.7219. Samples were bracketed with concentration-matched solutions of standard Jndi-1 (Tanaka et al., 2000) with a value of 0.512115±0.000007.
Keyword(s):
References:
Larkin, Christina; Piotrowski, Alexander M; Hindshaw, R S; Bayon, Germain; Hilton, R G; Baronas, J Jotautas; Dellinger, M; Wang, Ruixue; Tipper, Edward T (2021): Constraints on the source of reactive phases in sediment from a major Arctic river using neodymium isotopes. Earth and Planetary Science Letters, 565, 116933, https://doi.org/10.1016/j.epsl.2021.116933
Tanaka, Tsuyoshi; Togashi, Shigeko; Kamioka, Hikari; Amakawa, Hiroshi; Kagami, Hiroo; Hamamoto, Takuji; Yuhara, Masaki; Orihashi, Yuji; Yoneda, Shigekazu; Shimizu, Hiroshi; Kunimaru, Takanori; Takahashi, Kazuya; Yanagi, Takeru; Nakano, Takanori; Fujimaki, Hirokazu; Shinjo, Ryuichi; Asahara, Yoshihiro; Tanimizu, Masaharu; Dragusanu, Cristian (2000): JNdi-1: a neodymium isotopic reference in consistency with LaJolla neodymium. Chemical Geology, 168(3-4), 279-281, https://doi.org/10.1016/S0009-2541(00)00198-4
Funding:
Coordenação de Aperfeicoamento de Pessoal de Nível Superior (CAPES), grant/award no. 88887.091727/2014‐01
Coverage:
Latitude: -29.500000 * Longitude: -47.100000
Date/Time Start: 2007-11-28T02:10:00 * Date/Time End: 2007-11-28T02:10:00
Minimum DEPTH, sediment/rock: 0.295 m * Maximum DEPTH, sediment/rock: 3.230 m
Event(s):
SIS-203 * Latitude: -29.500000 * Longitude: -47.100000 * Date/Time: 2007-11-28T02:10:00 * Elevation: -1894.0 m * Location: western South Atlantic * Campaign: 1-7_Fugro_Brasil * Method/Device: Piston corer (PC)
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | DEPTH, sediment/rock | Depth sed | m | Suárez-Ibarra, Jaime Yesid | Geocode | |
| 2 | AGE | Age | ka BP | Suárez-Ibarra, Jaime Yesid | Geocode | |
| 3 | Foraminifera, planktic ε-Neodymium | Foram plankt ε-Nd | Suárez-Ibarra, Jaime Yesid | Multi-collector inductively coupled plasma mass spectrometer (MC-ICP-MS), ThermoFisher Scientific, Neptune Plus | ||
| 4 | Foraminifera, planktic ε-Neodymium, standard deviation | Foram plankt ε-Nd std dev | ± | Suárez-Ibarra, Jaime Yesid | Multi-collector inductively coupled plasma mass spectrometer (MC-ICP-MS), ThermoFisher Scientific, Neptune Plus |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0) (License comes into effect after moratorium ends)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
28 data points