Strontium and neodymium concentrations and isotope compositions in fossil fish teeth and pore waters at ODP Sites 130-807 and 125-786
We analyzed Nd and Sr isotopic compositions of Neogene fossil fish teeth from two sites in the Pacific in order to determine the effect of cleaning protocols and burial diagenesis on the preservation of seawater isotopic values. Sr is incorporated into the teeth at the time of growth; thus Sr isotop...
Main Authors: | , |
---|---|
Format: | Other/Unknown Material |
Language: | English |
Published: |
PANGAEA
2000
|
Subjects: | |
Online Access: | https://doi.pangaea.de/10.1594/PANGAEA.708257 https://doi.org/10.1594/PANGAEA.708257 |
id |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.708257 |
---|---|
record_format |
openpolar |
spelling |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.708257 2024-09-15T17:42:58+00:00 Strontium and neodymium concentrations and isotope compositions in fossil fish teeth and pore waters at ODP Sites 130-807 and 125-786 Martin, Ellen E Haley, Brian A MEDIAN LATITUDE: 17.740927 * MEDIAN LONGITUDE: 148.925525 * SOUTH-BOUND LATITUDE: 3.606667 * WEST-BOUND LONGITUDE: 141.226000 * NORTH-BOUND LATITUDE: 31.875000 * EAST-BOUND LONGITUDE: 156.625000 * DATE/TIME START: 1989-04-04T00:00:00 * DATE/TIME END: 1990-03-02T21:00:00 2000 application/zip, 5 datasets https://doi.pangaea.de/10.1594/PANGAEA.708257 https://doi.org/10.1594/PANGAEA.708257 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.708257 https://doi.org/10.1594/PANGAEA.708257 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: Martin, Ellen E; Haley, Brian A (2000): Fossil fish teeth as proxies for seawater Sr and Nd isotopes. Geochimica et Cosmochimica Acta, 64(5), 835-847, https://doi.org/10.1016/S0016-7037(99)00376-2 125-786 125-786A 130-807 130-807A COMPCORE Composite Core DRILL Drilling/drill rig Joides Resolution Leg125 Leg130 North Pacific Ocean Ocean Drilling Program ODP West equatorial Pacific Ocean dataset publication series 2000 ftpangaea https://doi.org/10.1594/PANGAEA.70825710.1016/S0016-7037(99)00376-2 2024-07-24T02:31:42Z We analyzed Nd and Sr isotopic compositions of Neogene fossil fish teeth from two sites in the Pacific in order to determine the effect of cleaning protocols and burial diagenesis on the preservation of seawater isotopic values. Sr is incorporated into the teeth at the time of growth; thus Sr isotopes are potentially valuable for chemostratigraphy. Nd isotopes are potential conservative tracers of paleocirculation; however, Nd is incorporated post-mortem, and may record diagenetic pore waters rather than seawater. We evaluated samples from two sites (Site 807A, Ontong Java Plateau and Site 786A, Izu-Bonin Arc) that were exposed to similar bottom waters, but have distinct lithologies and pore water chemistries. The Sr isotopic values of the fish teeth appear to accurately reflect contemporaneous seawater at both sites. The excellent correlation between the Nd isotopic values of teeth from the two sites suggests that the Nd is incorporated while the teeth are in chemical equilibrium with seawater, and that the signal is preserved over geologic timescales and subsequent burial. These data also corroborate paleoseawater Nd isotopic compositions derived from Pacific ferromanganese crusts that were recovered from similar water depths (Ling et al., 1997; doi:10.1016/S0012-821X(96)00224-5). This corroboration strongly suggests that both materials preserve seawater Nd isotope values. Variations in Pacific deepwater e-Nd values are consistent with predictions for the shoaling of the Isthmus of Panama and the subsequent initiation of nonradiogenic North Atlantic Deep Water that entered the Pacific via the Antarctic Circumpolar Current. Other/Unknown Material Antarc* Antarctic North Atlantic Deep Water North Atlantic PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(141.226000,156.625000,31.875000,3.606667) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
125-786 125-786A 130-807 130-807A COMPCORE Composite Core DRILL Drilling/drill rig Joides Resolution Leg125 Leg130 North Pacific Ocean Ocean Drilling Program ODP West equatorial Pacific Ocean |
spellingShingle |
125-786 125-786A 130-807 130-807A COMPCORE Composite Core DRILL Drilling/drill rig Joides Resolution Leg125 Leg130 North Pacific Ocean Ocean Drilling Program ODP West equatorial Pacific Ocean Martin, Ellen E Haley, Brian A Strontium and neodymium concentrations and isotope compositions in fossil fish teeth and pore waters at ODP Sites 130-807 and 125-786 |
topic_facet |
125-786 125-786A 130-807 130-807A COMPCORE Composite Core DRILL Drilling/drill rig Joides Resolution Leg125 Leg130 North Pacific Ocean Ocean Drilling Program ODP West equatorial Pacific Ocean |
description |
We analyzed Nd and Sr isotopic compositions of Neogene fossil fish teeth from two sites in the Pacific in order to determine the effect of cleaning protocols and burial diagenesis on the preservation of seawater isotopic values. Sr is incorporated into the teeth at the time of growth; thus Sr isotopes are potentially valuable for chemostratigraphy. Nd isotopes are potential conservative tracers of paleocirculation; however, Nd is incorporated post-mortem, and may record diagenetic pore waters rather than seawater. We evaluated samples from two sites (Site 807A, Ontong Java Plateau and Site 786A, Izu-Bonin Arc) that were exposed to similar bottom waters, but have distinct lithologies and pore water chemistries. The Sr isotopic values of the fish teeth appear to accurately reflect contemporaneous seawater at both sites. The excellent correlation between the Nd isotopic values of teeth from the two sites suggests that the Nd is incorporated while the teeth are in chemical equilibrium with seawater, and that the signal is preserved over geologic timescales and subsequent burial. These data also corroborate paleoseawater Nd isotopic compositions derived from Pacific ferromanganese crusts that were recovered from similar water depths (Ling et al., 1997; doi:10.1016/S0012-821X(96)00224-5). This corroboration strongly suggests that both materials preserve seawater Nd isotope values. Variations in Pacific deepwater e-Nd values are consistent with predictions for the shoaling of the Isthmus of Panama and the subsequent initiation of nonradiogenic North Atlantic Deep Water that entered the Pacific via the Antarctic Circumpolar Current. |
format |
Other/Unknown Material |
author |
Martin, Ellen E Haley, Brian A |
author_facet |
Martin, Ellen E Haley, Brian A |
author_sort |
Martin, Ellen E |
title |
Strontium and neodymium concentrations and isotope compositions in fossil fish teeth and pore waters at ODP Sites 130-807 and 125-786 |
title_short |
Strontium and neodymium concentrations and isotope compositions in fossil fish teeth and pore waters at ODP Sites 130-807 and 125-786 |
title_full |
Strontium and neodymium concentrations and isotope compositions in fossil fish teeth and pore waters at ODP Sites 130-807 and 125-786 |
title_fullStr |
Strontium and neodymium concentrations and isotope compositions in fossil fish teeth and pore waters at ODP Sites 130-807 and 125-786 |
title_full_unstemmed |
Strontium and neodymium concentrations and isotope compositions in fossil fish teeth and pore waters at ODP Sites 130-807 and 125-786 |
title_sort |
strontium and neodymium concentrations and isotope compositions in fossil fish teeth and pore waters at odp sites 130-807 and 125-786 |
publisher |
PANGAEA |
publishDate |
2000 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.708257 https://doi.org/10.1594/PANGAEA.708257 |
op_coverage |
MEDIAN LATITUDE: 17.740927 * MEDIAN LONGITUDE: 148.925525 * SOUTH-BOUND LATITUDE: 3.606667 * WEST-BOUND LONGITUDE: 141.226000 * NORTH-BOUND LATITUDE: 31.875000 * EAST-BOUND LONGITUDE: 156.625000 * DATE/TIME START: 1989-04-04T00:00:00 * DATE/TIME END: 1990-03-02T21:00:00 |
long_lat |
ENVELOPE(141.226000,156.625000,31.875000,3.606667) |
genre |
Antarc* Antarctic North Atlantic Deep Water North Atlantic |
genre_facet |
Antarc* Antarctic North Atlantic Deep Water North Atlantic |
op_source |
Supplement to: Martin, Ellen E; Haley, Brian A (2000): Fossil fish teeth as proxies for seawater Sr and Nd isotopes. Geochimica et Cosmochimica Acta, 64(5), 835-847, https://doi.org/10.1016/S0016-7037(99)00376-2 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.708257 https://doi.org/10.1594/PANGAEA.708257 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1594/PANGAEA.70825710.1016/S0016-7037(99)00376-2 |
_version_ |
1810489795331227648 |