A strategy for selection of reference materials in stable oxygen isotope analyses of solid materials

2011 ◽  
Vol 25 (11) ◽  
pp. 1625-1630 ◽  
Author(s):  
Grzegorz Skrzypek ◽  
Rohan Sadler
Keyword(s):  
Oxygen Isotope ◽  
Reference Materials ◽  
Solid Materials ◽  
Stable Oxygen Isotope ◽  
Stable Oxygen ◽  
Isotope Analyses ◽  
Selection Of

Annual shell growth patterns of three venerid bivalve mollusk species in the subtropical northwestern Pacific as revealed by sclerochronological and stable oxygen isotope analyses

2020 ◽  
Vol 167 (2) ◽  
Author(s):  
Kazushige Tanabe ◽  
Tsuzumi Miyaji ◽  
Naoko Murakami-Sugihara ◽  
Kotaro Shirai ◽  
Kazuyoshi Moriya
Keyword(s):  
Oxygen Isotope ◽  
Shell Growth ◽  
Growth Patterns ◽  
Bivalve Mollusk ◽  
Northwestern Pacific ◽  
Stable Oxygen Isotope ◽  
Stable Oxygen ◽  
Isotope Analyses ◽  
Mollusk Species

scholarly journals A Late Quaternary Stratigraphic Framework for Eastern Mediterranean Sapropel S1 Based on AMS 14C Dates and Stable Oxygen Isotopes

Radiocarbon ◽  
1991 ◽  
Vol 33 (1) ◽  
pp. 15-21 ◽  
Author(s):  
S R Troelstra ◽  
G M Ganssen ◽  
Klaas van der Borg ◽  
A F M de Jong
Keyword(s):  
Oxygen Isotope ◽  
Oxygen Isotopes ◽  
Late Quaternary ◽  
Eastern Mediterranean ◽  
Stable Oxygen Isotopes ◽  
Stable Oxygen Isotope ◽  
Stratigraphic Framework ◽  
Stable Oxygen ◽  
Isotope Analyses ◽  
Ams Dates

Detailed stable oxygen isotope analyses coupled with AMS 14C measurements on an eastern Mediterranean sapropel S1 sequence indicate that adverse bottom conditions persisted for ca 8000 years. AMS dates on additional sequences show that complete bottom anoxia lasted for 300-800 years. The S1 event is not synchronous throughout the eastern Mediterranean, but started earlier in the deeper parts of the basin.

New insights for studying phosphate stable oxygen isotopes in bioapatites interpreted from their geochemistry

2020 ◽  
Author(s):  
Zoneibe Luz ◽  
Marc Leu ◽  
Lukas P. Baumgartner ◽  
Hugo Bucher ◽  
Torsten Vennemann
Keyword(s):  
Oxygen Isotope ◽  
Environmental Conditions ◽  
Sea Water ◽  
Classical Method ◽  
Internal Standard ◽  
Element Distribution ◽  
Stable Oxygen Isotope ◽  
Shark Teeth ◽  
Stable Oxygen ◽  
Isotope Analyses

<p>Fossil bioapatite is widely used as a proxy to estimate paleoclimatic and/or – environmental conditions. However, the scarcity of well–preserved specimens in some samples mingled with their small sizes frequently compromise the application of notable geochemical techniques (e. g., laser fluorination). While some <em>in–</em><em>situ</em> and non–destructive methods allow studies of single specimens, it is important to understand the specimens’ microstructure and the elemental– and isotopic variations between structurally different parts. These parameters may vary as a function of the environmental conditions during the formation of biogenic tissue. To better understand the nature of bioapatites, different geochemical techniques were applied to apparently well–preserved samples of distinct age: conodonts (Early Triassic, CAI 1 to 2), fossil (Paleogene) and modern shark teeth. The microstructure and element distribution of the samples were investigated using scanning electron microscopy (SEM) and an electron microprobe (EMPA), respectively. Paleoenvironmental conditions and relative sea water temperatures in which bioapatites were formed is grounded in stable oxygen isotope analyses (δ<sup>18</sup>O<sub>PO4</sub>). Two methods were used for measurements of the δ<sup>18</sup>O<sub>PO4 </sub>values: a classical method using bulk sampling and high temperature reduction (HTR) analysis, and <em>in–situ</em> measurements by secondary ion mass spectrometry (SIMS). Quantitative analyses and chemical maps of segminiplanate conodont P<sub>1</sub>–elements are often found to be heterogeneous in terms of their element concentrations. The reason for this heterogeneous element distribution may be related to conodonts retracting their teeth during growth, suggested notably by variations in Mg, S and Na concentrations. Stable oxygen isotope measurements by HTR reproduced better than ±0.3 ‰ of standard deviations for most bioapatites. Conodonts from Timor analyzed by SIMS could be separated into three distinct groups (TM<sub>base</sub>, TM<sub>post</sub>, TM<sub>inner</sub>), based on differences in their δ<sup>18</sup>O<sub>PO4</sub> values. In the analyzed samples where the hyaline crown is mixed with the albid crown, variations in δ<sup>18</sup>O<sub>PO4</sub> values are larger (TM<sub>post</sub>: 16±1 ‰, <em>n</em> = 13; TM<sub>inner</sub>: 15.7±1.9 ‰, <em>n</em> = 11) than samples where only the hyaline crown was analyzed (TM<sub>base</sub>: 17.1±0.2 ‰, <em>n</em> = 12). Moreover, the δ<sup>18</sup>O<sub>PO4</sub> values from the latter dataset overlap with those from Timor samples analyzed by HTR (17.3±0.4 ‰, <em>n</em> = 7). Shark teeth had a larger variation in their δ<sup>18</sup>O<sub>PO4</sub> values as well when analyzed by the <em>in–situ</em> technique. The inter–tissue δ<sup>18</sup>O<sub>PO4 </sub>variation between enameloid zones in the same tooth is up to 5.5 ‰. The heterogeneity in the elemental concentrations of the studied bioapatites apparently do not result in significantly machine fractionation for the <em>in–situ</em> (SIMS) stable oxygen isotopic measurements. Instead, variation of δ<sup>18</sup>O<sub>PO4 </sub>values appears to be sensitive to remains of organic matter/carbonate in phosphate, analytical artefacts related to sample topography (for sharks) or vital effects. Based on these results, the conodont sample set from Timor (<em>Scythogondolella</em> ex. gr. <em>milleri</em>) was chosen as an internal standard for stable isotope analyses in bioapatite of the SwissSIMS laboratory. This new in–house standard could be used to normalize the oxygen isotope values and consequently help interpret variations in paleoclimate and/or – environmental conditions for bioapatite.</p>

Thermal habitat use and juvenile growth of Svalbard Arctic charr: evidence from otolith stable oxygen isotope analyses

2011 ◽  
Vol 21 (1) ◽  
pp. 134-144 ◽  
Author(s):  
Jane A. Godiksen ◽  
Michael Power ◽  
Reidar Borgstrøm ◽  
J. Brian Dempson ◽  
Martin A. Svenning
Keyword(s):  
Habitat Use ◽  
Oxygen Isotope ◽  
Arctic Charr ◽  
Juvenile Growth ◽  
Stable Oxygen Isotope ◽  
Thermal Habitat ◽  
Stable Oxygen ◽  
Isotope Analyses

scholarly journals Reconstructing early Holocene seasonal bottom-water temperatures in the northern North Sea using stable oxygen isotope records of Arctica islandica shells

2021 ◽  
Vol 567 ◽  
pp. 110242
Author(s):  
Tamara Trofimova ◽  
Carin Andersson ◽  
Fabian G.W. Bonitz ◽  
Leif-Erik Rydland Pedersen ◽  
Bernd R. Schöne
Keyword(s):  
Oxygen Isotope ◽  
North Sea ◽  
Bottom Water ◽  
Early Holocene ◽  
Arctica Islandica ◽  
Stable Oxygen Isotope ◽  
Stable Oxygen ◽  
Northern North Sea

Corroborating ecological depth preferences of planktonic foraminifera in the tropical Atlantic with the stable oxygen isotope ratios of core top specimens

2007 ◽  
Vol 22 (3) ◽  
pp. n/a-n/a ◽  
Author(s):  
E. Christa Farmer ◽  
Alexey Kaplan ◽  
Peter B. de Menocal ◽  
Jean Lynch-Stieglitz
Keyword(s):  
Oxygen Isotope ◽  
Planktonic Foraminifera ◽  
Isotope Ratios ◽  
Tropical Atlantic ◽  
Stable Oxygen Isotope ◽  
Oxygen Isotope Ratios ◽  
Stable Oxygen

scholarly journals New Ag 3 PO 4 comparison material for stable oxygen isotope analysis

2021 ◽  
Author(s):  
Andrea Watzinger ◽  
Katharina Schott ◽  
Rebecca Hood‐Nowotny ◽  
Federica Tamburini ◽  
Laura Arppe ◽  
...  
Keyword(s):  
Oxygen Isotope ◽  
Isotope Analysis ◽  
Stable Oxygen Isotope ◽  
Stable Oxygen

Stable oxygen isotope signatures of early season wood in New Zealand kauri ( Agathis australis) tree rings: Prospects for palaeoclimate reconstruction

2016 ◽  
Vol 40 ◽  
pp. 50-63 ◽  
Author(s):  
Andrew M. Lorrey ◽  
Tom H. Brookman ◽  
Michael N. Evans ◽  
Nicolas C. Fauchereau ◽  
Cate Macinnis-Ng ◽  
...  
Keyword(s):  
New Zealand ◽  
Oxygen Isotope ◽  
Tree Rings ◽  
Stable Oxygen Isotope ◽  
Early Season ◽  
Stable Oxygen

Marine conditions in central Sweden during the early Preboreal as inferred from a stable oxygen isotope gradient

2001 ◽  
Vol 16 (8) ◽  
pp. 785-794 ◽  
Author(s):  
Kristian Schoning ◽  
Fredrik Klingberg ◽  
Stefan Wastegård
Keyword(s):  
Oxygen Isotope ◽  
Stable Oxygen Isotope ◽  
Stable Oxygen

Stable oxygen isotope and crystallite size analysis of the cherts, De Long Mountains, Alaska; an exploration tool for submarine exhalative deposits

1982 ◽  
Vol 77 (7) ◽  
pp. 1761-1766 ◽  
Author(s):  
Robin D. Harrover ◽  
David I. Norman ◽  
Samuel M. Savin ◽  
Frederick J. Sawkins
Keyword(s):  
Crystallite Size ◽  
Oxygen Isotope ◽  
Size Analysis ◽  
Stable Oxygen Isotope ◽  
Exploration Tool ◽  
Stable Oxygen
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