Sr and Nd isotope systematics in fish teeth

Staudigel, Hubert; Doyle, P. S.; Zindler, Alan

doi:10.1016/0012-821x(85)90147-5

Cited by 164 publications

(89 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the case of diagenetic sediment coatings, foraminifera and fish teeth, it has been argued that the Nd is acquired either from bottom water or from shallow pore water (few cm depth) that is recording the same ε Nd signature as bottom water (Palmer and Elderfield, 1985;Staudigel et al, 1985;Martin and Haley, 2000;Klevenz et al, 2008;Murphy and Thomas, 2010). The use of coretop samples (0-2 cm core depth) in our study is considered to minimise any possible pore water contributions.…”

Section: Reliability Of Bottom Water ε ε ε ε Nd Reconstructionsmentioning

confidence: 99%

A boundary exchange influence on deglacial neodymium isotope records from the deep western Indian Ocean

Wilson

Piotrowski

Galy

et al. 2012

Earth and Planetary Science Letters

View full text Add to dashboard Cite

show abstract

Section: Reliability Of Bottom Water ε ε ε ε Nd Reconstructionsmentioning

confidence: 99%

A boundary exchange influence on deglacial neodymium isotope records from the deep western Indian Ocean

Wilson

Piotrowski

Galy

et al. 2012

Earth and Planetary Science Letters

View full text Add to dashboard Cite

show abstract

“…Palmer and Elderfield, 1985;Vance et al, 2004;Klevenz et al, 2008;Roberts et al, 2010), fish teeth (e.g. Staudigel et al, 1985;Martin and Haley, 2000) and sequential acid-reductive leaching of bulk sediment (e.g. Chester and Hughes, 1967;Rutberg et al, 2000;Bayon et al, 2002;Piotrowski et al, 2004;Gutjahr et al, 2007;Pahnke et al, 2008;Martin et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Reactivity of neodymium carriers in deep sea sediments: Implications for boundary exchange and paleoceanography

Wilson

Piotrowski

Galy

et al. 2013

Geochimica et Cosmochimica Acta

117

141

View full text Add to dashboard Cite

The dissolved neodymium (Nd) isotopic distribution in the deep oceans is determined by continental weathering inputs, water mass advection, and boundary exchange between particulate and dissolved fractions. Reconstructions of past Nd isotopic variability may therefore provide evidence on temporal changes in continental weathering inputs and/or ocean circulation patterns over a range of timescales. However, such an approach is limited by uncertainty in the mechanisms and importance of the boundary exchange process, and the challenge in reliably recovering past seawater Nd isotopic composition (e Nd ) from deep sea sediments. This study addresses these questions by investigating the processes involved in particulatesolution interactions and their impact on Nd isotopes. A better understanding of boundary exchange also has wider implications for the oceanic cycling and budgets of other particle-reactive elements.Sequential acid-reductive leaching experiments at pH $2-5 on deep sea sediments from the western Indian Ocean enable us to investigate natural boundary exchange processes over a timescale appropriate to laboratory experiments. We provide evidence that both the dissolution of solid phases and exchange processes influence the e Nd of leachates, which suggests that both processes may contribute to boundary exchange. We use major element and rare earth element (REE) data to investigate the pools of Nd that are accessed and demonstrate that sediment leachate e Nd values cannot always be explained by admixture between an authigenic component and the bulk detrital component. For example, in core WIND 24B, acid-reductive leaching generates e Nd values between À11 and À6 as a function of solution/solid ratios and leaching times, whereas the authigenic components have e Nd % À11 and the bulk detrital component has e Nd % À15. We infer that leaching in the Mascarene Basin accesses authigenic components and a minor radiogenic volcanic component that is more reactive than Madagascan-derived clays. The preferential mobilisation of such a minor component demonstrates that the Nd released by boundary exchange could often have a significantly different e Nd composition than the bulk detrital sediment.These experiments further demonstrate certain limitations on the use of acid-reductive leaching to extract the e Nd composition of the authigenic fraction of bulk deep sea sediments. For example, the detrital component may contain a reactive fraction which is also acid-extractible, while the incongruent nature of this dissolution suggests that it is often inappropriate to use the bulk detrital sediment elemental chemistry and/or e Nd composition when assessing possible detrital contamination of leachates. Based on the highly systematic controls observed, and evidence from REE patterns on the phases extracted, we suggest two approaches that lead to the most reliable extraction of the authigenic e Nd component and good agreement with foraminiferal-based approaches; either (i) leaching of sediments without a prior decarbona...

show abstract

“…; Turekian, 1969;Broecker and Peng, 1982) compared to the mixing time (-1000 yr; Broecker et al, 1961). The 87 Sr/ 86 Sr in seawater is assumed to be uniform throughout the open ocean at any given time (Faure et al, 1965;Brass, 1976) and has been used for stratigraphic correlation of unaltered fossils (McKenzie et al, 1988), diagenetic marine carbonates (Sailer, 1984;Swart et al, 1987;Aharon et al, 1987), and fish teeth (apatites, Staudigel et al, 1985).…”

Section: Introductionmentioning

confidence: 99%

Strontium Isotopic Ratios as Fluid Tracers in Messinian Evaporites of the Tyrrhenian Sea (Western Mediterranean Sea)

Müller¹,

Mueller²,

McKenzie³

1990

Proceedings of the Ocean Drilling Program

View full text Add to dashboard Cite

Strontium isotopic ratios of gypsums recovered from upper Miocene (Messinian) evaporites at ODP Leg 107 Holes 652A, 653B, and 654A (Tyrrhenian Sea) Sr-ratio for evaporites in the sedimentary cycles recognized for Holes 653B and 654A, the generally low Sr isotopic ratio of river water entering the Mediterranean Sea, and the presence of dwarf marine microfossils suggest that the 87 Sr/ 86 Sr ratio of the evaporites responded to hydrologic variations in a very restricted basin with variable rates of marine and fresh water input. The strontium isotopic ratios of the Messinian anhydrites from the proposed lacustrine sequence at Hole 652A fall in the same range as the marine evaporites from Holes 654A and 653B. This suggests a common or similar origin of the brines at the three locations.The complex depositional and hydrologic conditions in the Mediterranean during the Messinian salinity crisis preclude the use of Sr isotopic values from the evaporites for stratigraphic correlation and dating. They are, however, very useful in the interpretation of the depositional history of the basin. General calculations assuming a closed system suggest that the 87 Sr/ 86 Sr ratio of Messinian seawater (-0.7090) could be reduced to that of the evaporites (-0.7087) by mixing with fresh water (e.g., Nile River) in times of I0 4 to I0 5 yr.

show abstract

Sr and Nd isotope systematics in fish teeth

Cited by 164 publications

References 32 publications

A boundary exchange influence on deglacial neodymium isotope records from the deep western Indian Ocean

A boundary exchange influence on deglacial neodymium isotope records from the deep western Indian Ocean

Reactivity of neodymium carriers in deep sea sediments: Implications for boundary exchange and paleoceanography

Strontium Isotopic Ratios as Fluid Tracers in Messinian Evaporites of the Tyrrhenian Sea (Western Mediterranean Sea)

Contact Info

Product

Resources

About