c2d833fb-280d-209b-e054-002128a47908 English dataset British Geological Survey +44 115 936 3100 Environmental Science Centre,Keyworth NOTTINGHAM NOTTINGHAMSHIRE NG12 5GG United Kingdom enquiries@bgs.ac.uk pointOfContact 2026-05-03 UK GEMINI 2.3 http://data.bgs.ac.uk/id/dataHolding/13607757 WGS 84 (EPSG::4326) Neodymium and Strontium isotope compositions of Miocene to recent sediments collected at Site U1521 during International Ocean Discovery Programme (IODP) Expedition 374 to the Ross Sea, Antarctica. (NERC Grant NE/R018219/1) 2021-05-18 creation http://data.bgs.ac.uk/id/dataHolding/13607757 This dataset comprises neodymium (Nd) and strontium (Sr) isotope compositions measured on 72 sediment samples, from IODP Expedition 374 Site U1521 to the Ross Sea. These were collected on the RV JOIDES Resolution. Shipboard biostratigraphy and magnetostratigraphy suggests the samples are mainly early Miocene in age (McKay et al., 2019). The uppermost samples do, however, include younger Plio-Pleistocene sediments. Neodymium and Sr isotope analyses were conducted using a multi-collector inductively coupled plasma mass spectrometer (MC-ICP-MS) and a thermal ionisation mass spectrometer (TIMS), respectively, in the MAGIC laboratories at Imperial College London. Neodymium and Sr isotopes in sediments can be compared to measurements from terrestrial rock samples, allowing the changing provenance of the sediments to be traced. This dataset therefore provides information on how erosion by Antarctica’s ice sheets bordering the Ross Sea has changed over time. Neodymium isotopes are reported in the epsilon notation, which denotes the deviation in parts per 10,000 from the present-day composition of the Chondritic Uniform Reservoir (143Nd/144Nd = 0.512638) (Jacobsen and Wasserburg, 1980). Professor Tina van de Flierdt Imperial College London Department of Earth Science & Engineer London SW7 2BP not available principalInvestigator James Marschalek Imperial College London Research Postgraduate Royal School of Mines, Prince Consort Road London SW7 2BP not available originator Enquiries British Geological Survey United Kingdom not available distributor Enquiries British Geological Survey United Kingdom not available pointOfContact notApplicable https://resources.bgs.ac.uk/images/geonetworkThumbs/c2d833fb-280d-209b-e054-002128a47908.png Geology GEMET - INSPIRE themes, version 1.0 2008-06-01 publication Strontium isotopes Land ice Provenance Neodymium isotopes Sedimentary history BGS Thesaurus of Geosciences 2022 revision NGDC Deposited Data Citable Data dataCentre NERC_DDC otherRestrictions restricted The dataset has been formally approved by BGS for access by external clients under a BGS Digital Data Licence, issued via BGS's IPR Section. The dataset must not be provided to, or be accessible by, an external client until the IPR Section confirms that signed licence documentation is in place. Refer to the IPR Section (DigitalLE@bgs.ac.) if further advice is required.. Constraint applies until 2022-12-31 otherRestrictions The copyright of materials derived from the British Geological Survey's work is vested in the Natural Environment Research Council [NERC]. No part of this work may be reproduced or transmitted in any form or by any means, or stored in a retrieval system of any nature, without the prior permission of the copyright holder, via the BGS Intellectual Property Rights Manager. Use by customers of information provided by the BGS, is at the customer's own risk. In view of the disparate sources of information at BGS's disposal, including such material donated to BGS, that BGS accepts in good faith as being accurate, the Natural Environment Research Council (NERC) gives no warranty, expressed or implied, as to the quality or accuracy of the information supplied, or to the information's suitability for any use. NERC/BGS accepts no liability whatever in respect of loss, damage, injury or other occurence however caused. Either: (i) the dataset is made freely available, e.g. via the Internet, for a restricted category of use (e.g. educational use only); or (ii) the dataset has not been formally approved by BGS for access and use by external clients under licence, but its use may be permitted under alternative formal arrangements; or (iii) the dataset contains 3rd party data or information obtained by BGS under terms and conditions that must be consulted in order to determine the permitted usage of the dataset. Refer to the BGS staff member responsible for the creation of the dataset if further advice is required. He / she should be familiar with the composition of the dataset, particularly with regard to 3rd party IPR contained in it, and any resultant use restrictions. This staff member should revert to the IPR Section (ipr@bgs.ac.uk) for advice, should the position not be clear. vector English geoscientificInformation British Geological Survey Gazetteer: Gazetteer of sea areas 2010 revision ROSS SEA [id=2001391] -179.6700 -179.6800 -75.6800 -75.6700 2018-10-01 2020-09-01 Comma-separated values (CSV) witheld Enquiries British Geological Survey United Kingdom not available distributor https://webapps.bgs.ac.uk/services/ngdc/accessions/index.html#item165954 WWW:DOWNLOAD-1.0-http--download Data download https://doi.org/10.5285/3a646c8a-8422-4079-a928-a159532439eb WWW:LINK-1.0-http--related Citation Information - Digital Object Identifier (DOI) Marschalek, J. (2021). Neodymium and Strontium isotope compositions of Miocene to recent sediments collected at Site U1521 during International Ocean Discovery Programme (IODP) Expedition 374 to the Ross Sea, Antarctica. NERC EDS National Geoscience Data Centre. (Dataset). https://doi.org/10.5285/3a646c8a-8422-4079-a928-a159532439eb information dataset dataset INSPIRE Implementing rules laying down technical arrangements for the interoperability and harmonisation of Geology 2011 publication See the referenced specification false Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services 2010-12-08 publication See http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=OJ:L:2010:323:0011:0102:EN:PDF false Methods, instrumentation and data quality are discussed in full in the associated readme file and the sample preparation method is described in Simões Pereira et al. (2018). Briefly, samples were disaggregated and sieved to 63 µm, then dried and leached to remove authigenic Fe-Mn oxyhydroxide coatings (Gutjahr et al., 2007). The leached sediment was homogenised and digested before passing through standard ion exchange resins to isolate the elements of interest. Sr isotopes were analysed on a Thermo Scientific Triton TIMS and Neodymium isotopes were analysed on a Nu Plasma HR or a Nu Plasma II in static mode, both in the MAGIC laboratories at Imperial College London.