Structure and composition of the aragonitic crossed lamellar layers in six species of Bivalvia and Gastropoda

Dauphin, Yannicke; Denis, A.

doi:10.1016/s1095-6433(00)00213-0

Cited by 82 publications

(50 citation statements)

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“…Methods like synchrotron based X-ray Absorption Near Edge Structure (XANES) or Time Of Flight-Secondary Ion Mass Spectroscopy (TOF-SIMS) can give chemical information about organic compounds with high spatial resolution (Cusack et al, 2008;Dauphin et al, 2008;Heim et al, 2009;Dauphin et al, 2010;Farre et al, 2011), but are either difficult to access (XANES) or prone to contamination (TOF-SIMS). Extracts of organic compounds from biogenic materials allow a better characterization of their composition, but nothing can be said about their spatial distribution (Krampitz et al, 1976;Samata et al, 1980;Dauphin and Denis, 2000;Farre and Dauphin, 2009).…”

Section: Introductionmentioning

confidence: 99%

Confocal Raman microscope mapping as a tool to describe different mineral and organic phases at high spatial resolution within marine biogenic carbonates: case study on <i>Nerita undata</i> (Gastropoda, Neritopsina)

Nehrke

Nouet

2011

Biogeosciences

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Abstract. Marine biogenic carbonates formed by invertebrates (e.g. corals and mollusks) represent complex composites of one or more mineral phases and organic molecules. This complexity ranges from the macroscopic structures observed with the naked eye down to sub micrometric structures only revealed by micro analytical techniques. Understanding to what extent and how organisms can control the formation of these structures requires that the mineral and organic phases can be identified and their spatial distribution related. Here we demonstrate the capability of confocal Raman microscopy applied to cross sections of a shell of Nerita undata to describe the distribution of calcite and aragonite including their crystallographic orientation with high lateral resolution (∼300 nm). Moreover, spatial distribution of functional groups of organic compounds can be simultaneously acquired, allowing to specifically relate them to the observed microstructures. The data presented in this case study highlights the possible new contributions of this method to the description of modalities of Nerita undata shell formation, and what could be expected of its application to other marine biogenic carbonates. Localization of areas of interest would also allow further investigations using more localized methods, such as TEM that would provide complementary information on the relation between organic molecules and crystal lattice.

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Section: Introductionmentioning

confidence: 99%

Confocal Raman microscope mapping as a tool to describe different mineral and organic phases at high spatial resolution within marine biogenic carbonates: case study on <i>Nerita undata</i> (Gastropoda, Neritopsina)

Nehrke

Nouet

2011

Biogeosciences

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“…The mineralogical composition of molluscan shells is routinely determined using Fourier transform infrared spectroscopy (FTIR) (Balmain, Hannoyer, & Lopez, 1999;Dauphin & Denis, 2000). This technique does not, however, identify the mineralogical structure and composition of the shell on a microscopic scale.…”

Section: Introductionmentioning

confidence: 99%

Preliminary study on the preservation of giant clam (Tridacnidae) shells from the Balobok Rockshelter archaeological site, south Philippines

et al. 2011

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Tridacnidae shells, a valuable archive of past environments, are common in the Balobok Rockshelter archaeological site on Sanga-Sanga Island in the south Philippines. This site was occupied during the mid-Holocene (ca. 5000-8800 14 C yr B.P.), a period of Neolithic cultural expansion in the Philippines. This paper focuses on the preservation of two shell specimens, Hippopus hippopus and Tridacna maxima, unearthed from two mid-Holocene layers within the rockshelter. The shells' mineralogy and microstructure (prismatic and crossed-lamellar) were studied using micro-Fourier transform infrared spectroscopy and scanning electron microscopy to determine if the samples were suitable as paleoenvironmental records. Both shells are still aragonitic but aragonite crystals of both microstructure types are partly dissolved. This dissolution, characteristic of meteoric water alteration, precludes their utility in paleoenvironmental geochemical studies. Nevertheless, these shells are abundant in archaeological sites in the region and may be better preserved in other depositional contexts; more studies on Philippine Tridacnidae shell diagenesis are needed.

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“…These results proved that the Porites coral sample XL1 from South China Sea has high Mg (>800 lg/g) and Sr (>6500 lg/g) concentration (Table 1), which are the most thoroughly studied elements in some benthonic mollusc shells and Cnidarian and skeletal marine minerals [13,15,22,23] [15]; low Sr ($2000 lg/g) and Mg ($400 lg/g) contents are also present in Mollusca while high Sr (>6500 lg/g) and Mg (>1500 lg/g) occur in Cnidaria [13]. In the current study, Porites coral samples XL1 has relatively lower Sr and Mg, but higher Fe content than the sample from Malaysia (Table 1) [15].…”

Section: Minor Elements In Coralmentioning

confidence: 70%

Vibrational spectroscopic characterization of growth bands in Porites coral from South China Sea

Song

Ayoko

et al. 2013

Spectrochimica Acta Part A: Molecular and Biomolecular Spectros

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Structure and composition of the aragonitic crossed lamellar layers in six species of Bivalvia and Gastropoda

Cited by 82 publications

References 10 publications

Confocal Raman microscope mapping as a tool to describe different mineral and organic phases at high spatial resolution within marine biogenic carbonates: case study on <i>Nerita undata</i> (Gastropoda, Neritopsina)

Confocal Raman microscope mapping as a tool to describe different mineral and organic phases at high spatial resolution within marine biogenic carbonates: case study on <i>Nerita undata</i> (Gastropoda, Neritopsina)

Preliminary study on the preservation of giant clam (Tridacnidae) shells from the Balobok Rockshelter archaeological site, south Philippines

Vibrational spectroscopic characterization of growth bands in Porites coral from South China Sea

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Structure and composition of the aragonitic crossed lamellar layers in six species of Bivalvia and Gastropoda

Cited by 82 publications

References 10 publications

Confocal Raman microscope mapping as a tool to describe different mineral and organic phases at high spatial resolution within marine biogenic carbonates: case study on &lt;i&gt;Nerita undata&lt;/i&gt; (Gastropoda, Neritopsina)

Confocal Raman microscope mapping as a tool to describe different mineral and organic phases at high spatial resolution within marine biogenic carbonates: case study on &lt;i&gt;Nerita undata&lt;/i&gt; (Gastropoda, Neritopsina)

Preliminary study on the preservation of giant clam (Tridacnidae) shells from the Balobok Rockshelter archaeological site, south Philippines

Vibrational spectroscopic characterization of growth bands in Porites coral from South China Sea

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Confocal Raman microscope mapping as a tool to describe different mineral and organic phases at high spatial resolution within marine biogenic carbonates: case study on <i>Nerita undata</i> (Gastropoda, Neritopsina)

Confocal Raman microscope mapping as a tool to describe different mineral and organic phases at high spatial resolution within marine biogenic carbonates: case study on <i>Nerita undata</i> (Gastropoda, Neritopsina)