Major, trace element and XRF data for sediments and fish tooth samples, from a shallow marine setting with varying redox conditions (Site U1356, Wilkes Land Margin, E.Antarctica)
Fossil fish teeth from pelagic open ocean settings are considered a robust archive for preserving the neodymium (Nd) isotopic composition of ancient seawater. However, using fossil fish teeth as an archive to reconstruct seawater Nd isotopic compositions in different sedimentary redox environments a...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.858101 2023-05-15T13:44:47+02:00 Major, trace element and XRF data for sediments and fish tooth samples, from a shallow marine setting with varying redox conditions (Site U1356, Wilkes Land Margin, E.Antarctica) Huck, Claire E van de Flierdt, Tina Jiménez-Espejo, Francisco Jose Bohaty, Steven M Röhl, Ursula Hammond, Samantha J LATITUDE: -63.310230 * LONGITUDE: 135.998960 2016-02-13 application/zip, 4 datasets https://doi.pangaea.de/10.1594/PANGAEA.858101 https://doi.org/10.1594/PANGAEA.858101 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.858101 https://doi.org/10.1594/PANGAEA.858101 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Huck, Claire E; van de Flierdt, Tina; Jiménez-Espejo, Francisco Jose; Bohaty, Steven M; Röhl, Ursula; Hammond, Samantha J (2016): Robustness of fossil fish teeth for seawater neodymium isotope reconstructions under variable redox conditions in an ancient shallow marine setting. Geochemistry, Geophysics, Geosystems, 17(3), 679-698, https://doi.org/10.1002/2015GC006218 318-U1356A DRILL Drilling/drill rig Exp318 Integrated Ocean Drilling Program / International Ocean Discovery Program IODP Joides Resolution Wilkes Land Dataset 2016 ftpangaea https://doi.org/10.1594/PANGAEA.858101 https://doi.org/10.1002/2015GC006218 2023-01-20T07:33:40Z Fossil fish teeth from pelagic open ocean settings are considered a robust archive for preserving the neodymium (Nd) isotopic composition of ancient seawater. However, using fossil fish teeth as an archive to reconstruct seawater Nd isotopic compositions in different sedimentary redox environments and in terrigenous-dominated, shallow marine settings is less proven. To address these uncertainties, fish tooth and sediment samples from a middle Eocene section deposited proximal to the East Antarctic margin at Integrated Ocean Drilling Program Site U1356 were analyzed for major and trace element geochemistry, and Nd isotopes. Major and trace element analyses of the sediments reveal changing redox conditions throughout deposition in a shallow marine environment. However, variations in the Nd isotopic composition and rare earth element (REE) patterns of the associated fish teeth do not correspond to redox changes in the sediments. REE patterns in fish teeth at Site U1356 carry a typical mid-REE-enriched signature. However, a consistently positive Ce anomaly marks a deviation from a pure authigenic origin of REEs to the fish tooth. Neodymium isotopic compositions of cleaned and uncleaned fish teeth fall between modern seawater and local sediments and hence could be authigenic in nature, but could also be influenced by sedimentary fluxes. We conclude that the fossil fish tooth Nd isotope proxy is not sensitive to moderate changes in pore water oxygenation. However, combined studies on sediments, pore waters, fish teeth and seawater are needed to fully understand processes driving the reconstructed signature from shallow marine sections in proximity to continental sources. This article is protected by copyright. All rights reserved. Dataset Antarc* Antarctic Wilkes Land PANGAEA - Data Publisher for Earth & Environmental Science Antarctic Wilkes Land ENVELOPE(120.000,120.000,-69.000,-69.000) ENVELOPE(135.998960,135.998960,-63.310230,-63.310230) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
318-U1356A DRILL Drilling/drill rig Exp318 Integrated Ocean Drilling Program / International Ocean Discovery Program IODP Joides Resolution Wilkes Land |
spellingShingle |
318-U1356A DRILL Drilling/drill rig Exp318 Integrated Ocean Drilling Program / International Ocean Discovery Program IODP Joides Resolution Wilkes Land Huck, Claire E van de Flierdt, Tina Jiménez-Espejo, Francisco Jose Bohaty, Steven M Röhl, Ursula Hammond, Samantha J Major, trace element and XRF data for sediments and fish tooth samples, from a shallow marine setting with varying redox conditions (Site U1356, Wilkes Land Margin, E.Antarctica) |
topic_facet |
318-U1356A DRILL Drilling/drill rig Exp318 Integrated Ocean Drilling Program / International Ocean Discovery Program IODP Joides Resolution Wilkes Land |
description |
Fossil fish teeth from pelagic open ocean settings are considered a robust archive for preserving the neodymium (Nd) isotopic composition of ancient seawater. However, using fossil fish teeth as an archive to reconstruct seawater Nd isotopic compositions in different sedimentary redox environments and in terrigenous-dominated, shallow marine settings is less proven. To address these uncertainties, fish tooth and sediment samples from a middle Eocene section deposited proximal to the East Antarctic margin at Integrated Ocean Drilling Program Site U1356 were analyzed for major and trace element geochemistry, and Nd isotopes. Major and trace element analyses of the sediments reveal changing redox conditions throughout deposition in a shallow marine environment. However, variations in the Nd isotopic composition and rare earth element (REE) patterns of the associated fish teeth do not correspond to redox changes in the sediments. REE patterns in fish teeth at Site U1356 carry a typical mid-REE-enriched signature. However, a consistently positive Ce anomaly marks a deviation from a pure authigenic origin of REEs to the fish tooth. Neodymium isotopic compositions of cleaned and uncleaned fish teeth fall between modern seawater and local sediments and hence could be authigenic in nature, but could also be influenced by sedimentary fluxes. We conclude that the fossil fish tooth Nd isotope proxy is not sensitive to moderate changes in pore water oxygenation. However, combined studies on sediments, pore waters, fish teeth and seawater are needed to fully understand processes driving the reconstructed signature from shallow marine sections in proximity to continental sources. This article is protected by copyright. All rights reserved. |
format |
Dataset |
author |
Huck, Claire E van de Flierdt, Tina Jiménez-Espejo, Francisco Jose Bohaty, Steven M Röhl, Ursula Hammond, Samantha J |
author_facet |
Huck, Claire E van de Flierdt, Tina Jiménez-Espejo, Francisco Jose Bohaty, Steven M Röhl, Ursula Hammond, Samantha J |
author_sort |
Huck, Claire E |
title |
Major, trace element and XRF data for sediments and fish tooth samples, from a shallow marine setting with varying redox conditions (Site U1356, Wilkes Land Margin, E.Antarctica) |
title_short |
Major, trace element and XRF data for sediments and fish tooth samples, from a shallow marine setting with varying redox conditions (Site U1356, Wilkes Land Margin, E.Antarctica) |
title_full |
Major, trace element and XRF data for sediments and fish tooth samples, from a shallow marine setting with varying redox conditions (Site U1356, Wilkes Land Margin, E.Antarctica) |
title_fullStr |
Major, trace element and XRF data for sediments and fish tooth samples, from a shallow marine setting with varying redox conditions (Site U1356, Wilkes Land Margin, E.Antarctica) |
title_full_unstemmed |
Major, trace element and XRF data for sediments and fish tooth samples, from a shallow marine setting with varying redox conditions (Site U1356, Wilkes Land Margin, E.Antarctica) |
title_sort |
major, trace element and xrf data for sediments and fish tooth samples, from a shallow marine setting with varying redox conditions (site u1356, wilkes land margin, e.antarctica) |
publisher |
PANGAEA |
publishDate |
2016 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.858101 https://doi.org/10.1594/PANGAEA.858101 |
op_coverage |
LATITUDE: -63.310230 * LONGITUDE: 135.998960 |
long_lat |
ENVELOPE(120.000,120.000,-69.000,-69.000) ENVELOPE(135.998960,135.998960,-63.310230,-63.310230) |
geographic |
Antarctic Wilkes Land |
geographic_facet |
Antarctic Wilkes Land |
genre |
Antarc* Antarctic Wilkes Land |
genre_facet |
Antarc* Antarctic Wilkes Land |
op_source |
Supplement to: Huck, Claire E; van de Flierdt, Tina; Jiménez-Espejo, Francisco Jose; Bohaty, Steven M; Röhl, Ursula; Hammond, Samantha J (2016): Robustness of fossil fish teeth for seawater neodymium isotope reconstructions under variable redox conditions in an ancient shallow marine setting. Geochemistry, Geophysics, Geosystems, 17(3), 679-698, https://doi.org/10.1002/2015GC006218 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.858101 https://doi.org/10.1594/PANGAEA.858101 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.858101 https://doi.org/10.1002/2015GC006218 |
_version_ |
1766206397927653376 |