Stable oxygen isotopes of dental biomineral: differentiation at the intra- and inter-tissue level of modern shark teeth

Žigaitė, Živilė; Whitehouse, Martin J.

doi:10.1080/11035897.2013.878747

Cited by 17 publications

(19 citation statements)

References 24 publications

(24 reference statements)

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“…Using in situ SIMS technique to measure the oxygen isotope composition of conodont apatite (Trotter et al, 2008(Trotter et al, , 2015Rigo et al, 2012;Wheeley et al, 2012), foraminiferal calcite (Kozdon et al, 2009(Kozdon et al, , 2011, and other faunal materials (Aubert et al, 2012;Blumenthal et al, 2014;Zigaite and Whitehouse, 2014) have been well developed in recent years, with similar analytical procedures among different laboratories. At the CA-SIMS laboratory in the Institute of Geology and Geophysics, Chinese Academy of Sciences, we used a Cameca IMS-1280 SIMS, generally following the methodology developed in the SHRIMP laboratory of the Australian National University (Trotter et al, 2008(Trotter et al, , 2015.…”

Section: In Situ Sims Methodsmentioning

confidence: 99%

“…We overcome the limitation of conventional IRMS analyses (i.e., sample size) by measuring oxygen isotope compositions of individual conodont elements using the in situ secondary ion mass spectrometry (SIMS) method. To eliminate as many diagenetic and preservation artifacts as possibly we followed strict analytical procedures (see Supplementary material for details) and applied with considerable caution on the δ 18 O variability (Wheeley et al, 2012;Zigaite and Whitehouse, 2014). This technique has been proven to have considerable potential for reconstructing paleoclimate and paleoceanography (Trotter et al, 2008(Trotter et al, , 2015Rigo et al, 2012;Wheeley et al, 2012), and can significantly increase the spatial and temporal resolutions based on samples with low-yielding conodont elements.…”

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confidence: 99%

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High-resolution SIMS oxygen isotope analysis on conodont apatite from South China and implications for the end-Permian mass extinction

Chen

Shen

et al. 2016

Palaeogeography, Palaeoclimatology, Palaeoecology

141

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Understanding the interplay of climatic and biological events in deep time requires resolving the precise timing and pattern of paleotemperature changes and their temporal relationship with carbon cycle variations and biodiversity fluctuations. In situ oxygen isotope analyses of conodont apatite from South China enables us to reconstruct high-resolution seawater temperature records across the Permian-Triassic boundary (PTB) intervals in the upper slope (Meishan), lower slope (Shangsi), and carbonate platform (Daijiagou and Liangfengya) settings. Constrained by the latest high-precision geochronological dates and high-resolution conodont biozones, we can establish the temporal and spatial patterns of seawater temperature changes and assess their potential connections with the carbon cycle disruption and biodiversity decline. We find a rapid warming of~10°C during the latest Permian-earliest Triassic that postdated the onset of the negative shift in δ 13 C carb by~81 kyr (thousand years), the abrupt decline in δ 13 C carb by~32 kyr and the onset of mass extinction by~23 kyr, which contradicts previous claims that the extreme temperature rise started immediately before or coincided with the onset of mass extinction. Our new evidence indicates that climate warming was most likely not a direct cause for the main pulse of the end-Permian mass extinction (EPME), but rather a later participant or a catalyst that increased the pace of the biodiversity decline. In addition, a prominent cooling is recorded in the earliest Changhsingian, with the main phase (a drop of~8°C in~0.2 Ma) confined to the lower part of the Clarkina wangi zone and synchronous with the positive limb of the carbon isotope excursion (CIE) around the Wuchiapingian-Changhsingian boundary (WCB) in Meishan and Shangsi. Further long-term and high-resolution studies from other sections are needed to confirm the full contexts and underlying dynamics of the WCB "cooling event".

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Section: In Situ Sims Methodsmentioning

confidence: 99%

mentioning

confidence: 99%

High-resolution SIMS oxygen isotope analysis on conodont apatite from South China and implications for the end-Permian mass extinction

Chen

Shen

et al. 2016

Palaeogeography, Palaeoclimatology, Palaeoecology

141

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“…For instance, oxygen isotopic compositions in biogenic apatites have been widely used as a proxy for reconstructing seawater temperatures and major glaciation events in the past . Apatite oxygen isotopes have been measured using the fluorination technique and secondary ion mass spectrometry (SIMS) . The fluorination technique gives high precision data, but it is sample destructive and requires a relatively large sample size, typically from ~0.2 to 2 mg .…”

Section: Introductionmentioning

confidence: 99%

“…[22][23][24][25][26][27] Apatite oxygen isotopes have been measured using the fluorination technique and secondary ion mass spectrometry (SIMS). 18,22,23,[27][28][29][30][31] The fluorination technique gives high precision data, but it is sample destructive and requires a relatively large sample size, typically from~0.2 to 2 mg. 1,[32][33][34] In recent years, many studies have found that the oxygen isotopic compositions of many apatite samples are not uniform even in the micrometre scales, and complexity is also brought by inclusions and cracks in the apatite grains. 22,23,27 Meanwhile, SIMS can measure oxygen isotopic compositions with high spatial resolution, but the matrix effect represents a major technical limitation.…”

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confidence: 99%

Oxygen isotope homogeneity assessment for apatite U‐Th‐Pb geochronology reference materials

Yang

Xia

et al. 2019

Surface & Interface Analysis

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Secondary ion mass spectrometry (SIMS) measurement of oxygen isotopes in apatite has been employed more and more in petrogenetic, metallogenic, and climate change studies. Well‐characterised reference materials are needed due to the matrix effect, but they are yet to be well established. In this study, we conducted in‐situ oxygen isotopic and chemical analyses on six commonly used apatite reference materials (ie, Emerald, Kovdor, McClure, Mud Tank, Otter Lake, and Slyudyanka) and two in‐house apatite references (Qinghu and GEMS 203) to assess their oxygen isotope homogeneity and applicability for microbeam analyses. Our results show that all these apatite references are in general chemically homogeneous. In terms of oxygen isotopes, GEMS 203 (δ18O = 9.85 ± 0.40‰ [2SD], corrected by Durango 3), Kovdor (δ18O = 6.55 ± 0.38‰, 2SD), and McClure (δ18O = 5.94 ± 0.42‰, 2SD) are fairly homogeneous, whereas Emerald (δ18O = 10.37 ± 0.45‰, 2SD), Mud Tank (δ18O = 6.35 ± 0.46‰, 2SD), Otter Lake (δ18O = 9.71 ± 0.47‰, 2SD), Qinghu (δ18O = 5.44 ± 0.49‰, 2SD), and Slyudyanka (δ18O = 17.49 ± 0.43‰, 2SD) are less homogenous. This indicates that the former group represents better reference materials for in‐situ oxygen isotopic analyses, whilst the latter group can be used as secondary reference material for analytical quality control.

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“…The effects of OHfractionation and substitution by other compounds such as CO 3 (Kohn et al, 1999) however, will not likely cause significant variation in the final δ 18 O values as the wt % in dentine and bone is low (<1.6 wt %, Cerling and Sharp, 1996). SIMS δ 18 O analysis of modern shark teeth (Žigaitė and Whitehouse, 2014) identified average δ 18 O variation of 1.2 ‰ within the dentine tissue. Mean variation between the parallel bundled enameloid (+21.2-23.1 ‰) and dentine tissue (+20.6-21.8 ‰) was also recorded.…”

Section: Diagenetic Influencesmentioning

confidence: 98%

Assessing the fidelity of marine vertebrate microfossil δ18O signatures and their potential for palaeo-ecological and -climatic reconstructions

Roelofs

Barham

Cliff

et al. 2017

Palaeogeography, Palaeoclimatology, Palaeoecology

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Conodont biogenic apatite has become a preferred analytical target for oxygen isotope studies investigating ocean temperature and palaeoclimate changes in the Palaeozoic. Despite the growing application in geochemically-based palaeoenvironmental reconstructions, the paucity or absence of conodont fossils in certain facies necessitates greater flexibility in selection of robust oxygen-bearing compounds for analysis. Vertebrate microfossils (teeth, dermal denticles, spines) offer a potential substitute for conodonts from the middle Palaeozoic. Vertebrate bioapatite is particularly advantageous given a fossil record extending to the present with representatives across freshwater to fully marine environments, thus widening the scope of oxygen isotope studies on bioapatite. However, significant tissue heterogeneity within vertebrates and differential susceptibility of these tissues to diagenetic alteration have been raised as potential problems affecting the reliability of the oxygen isotope ratios as palaeoclimatic proxies. Well-preserved vertebrate microfossils and co-occurring conodont fossils from the Upper Devonian and Lower Carboniferous of the Lennard Shelf, Canning Basin, Western Australia, were analysed using bulk (gas isotope ratio mass spectrometry, GIRMS) and in-situ (secondary ion mass spectrometry, SIMS) methodologies, with the latter technique allowing investigation of specific tissues within vertebrate elements. The δ 18 O conodont results may be interpreted in terms of palaeolatitudinally and environmentally sensible palaeo-salinity and-temperature and provide a baseline standard for comparison against vertebrate microfossil δ 18 O values. Despite an absence of obvious diagenetic modification, GIRMS of vertebrate denticles yielded δ 18 O values depleted in 18 O by 2-4 ‰ relative to co-occurring conodonts. SIMS analysis of dentine tissues exhibited significant heterogeneity, while hypermineralised tissues in both scales and teeth produced δ 18 O values comparable with those of associated conodonts. The susceptibility of permeable phosphatic fossil tissues to microbial activity, fluid interaction and introduction of mineral precipitates post-formation is demonstrated in the dentine of vertebrate microfossils, which showed significant heterogeneity and consistent depletion in 18 O relative to conodonts. The hypermineralised tissues present in both teeth and scales appear resistant to many diagenetic processes and indicate potential for palaeoclimatic reconstructions and palaeoecological investigations.

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Stable oxygen isotopes of dental biomineral: differentiation at the intra- and inter-tissue level of modern shark teeth

Cited by 17 publications

References 24 publications

High-resolution SIMS oxygen isotope analysis on conodont apatite from South China and implications for the end-Permian mass extinction

High-resolution SIMS oxygen isotope analysis on conodont apatite from South China and implications for the end-Permian mass extinction

Oxygen isotope homogeneity assessment for apatite U‐Th‐Pb geochronology reference materials

Assessing the fidelity of marine vertebrate microfossil δ18O signatures and their potential for palaeo-ecological and -climatic reconstructions

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