Analysis of the Fossilization Processes of Vicarya callosa japonica Shells Using Raman Micro-Mapping Combined with Principal Component Analysis and Partial Least Squares Regression.
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| Title: | Analysis of the Fossilization Processes of Vicarya callosa japonica Shells Using Raman Micro-Mapping Combined with Principal Component Analysis and Partial Least Squares Regression. |
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| Authors: | Tanaka, Yuki1 (AUTHOR), Hashimoto, Kosuke2 (AUTHOR), Ichiki, Toshiya3 (AUTHOR), Sato, Hidetoshi3 (AUTHOR), Ozaki, Yukihiro3 (AUTHOR), Tsuboi, Motohiro1 (AUTHOR) tsuboimot@kwansei.ac.jp |
| Source: | Applied Spectroscopy. Aug2025, Vol. 79 Issue 8, p1218-1227. 10p. |
| Subjects: | Fossilization, Raman spectroscopy, Partial least squares regression, Miocene Epoch, Calcite, Principal components analysis, Aragonite, Gastropoda |
| Abstract: | Micro-Raman spectroscopic analysis of a fossil sample of Vicarya callosa japonica was performed to investigate the chemical process of fossilization. The Vicarya sample, originating from the Miocene Katsuta Group, Okayama prefecture, southwestern Japan, had a conical shell body with multiple protuberances on the outer layer. The interior of the shell was filled with a carbonate sediment. Raman mapping combined with principal component analysis (PCA) and partial least squares regression (PLSR) analysis were performed on the sample. Well-preserved, in vivo aragonite was found to be distributed on the shell and near the boundary between the internal carbonate precipitates and the shell. The internal precipitates were composed of pure calcite and black carbonates. The black-colored precipitates contained pyrite, suggesting that the carbonates were derived from the same biogenic tissue as the carbonate concretions and were the starting point for their crystallization. The rapid formation of the precipitates, also similar to that of carbonate concretions, and the suppression of the demineralization effect of the shell from pore water in the sediment may have contributed to the preservation of the aragonite. The reaction of the transition from aragonite to calcite in the shell progressed to some extent and crystallization was completed before the transition to calcite was complete. [ABSTRACT FROM AUTHOR] |
| Copyright of Applied Spectroscopy is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 186874189 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Analysis of the Fossilization Processes of Vicarya callosa japonica Shells Using Raman Micro-Mapping Combined with Principal Component Analysis and Partial Least Squares Regression. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Tanaka%2C+Yuki%22">Tanaka, Yuki</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Hashimoto%2C+Kosuke%22">Hashimoto, Kosuke</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Ichiki%2C+Toshiya%22">Ichiki, Toshiya</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Sato%2C+Hidetoshi%22">Sato, Hidetoshi</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Ozaki%2C+Yukihiro%22">Ozaki, Yukihiro</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Tsuboi%2C+Motohiro%22">Tsuboi, Motohiro</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> tsuboimot@kwansei.ac.jp</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Applied+Spectroscopy%22">Applied Spectroscopy</searchLink>. Aug2025, Vol. 79 Issue 8, p1218-1227. 10p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Fossilization%22">Fossilization</searchLink><br /><searchLink fieldCode="DE" term="%22Raman+spectroscopy%22">Raman spectroscopy</searchLink><br /><searchLink fieldCode="DE" term="%22Partial+least+squares+regression%22">Partial least squares regression</searchLink><br /><searchLink fieldCode="DE" term="%22Miocene+Epoch%22">Miocene Epoch</searchLink><br /><searchLink fieldCode="DE" term="%22Calcite%22">Calcite</searchLink><br /><searchLink fieldCode="DE" term="%22Principal+components+analysis%22">Principal components analysis</searchLink><br /><searchLink fieldCode="DE" term="%22Aragonite%22">Aragonite</searchLink><br /><searchLink fieldCode="DE" term="%22Gastropoda%22">Gastropoda</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Micro-Raman spectroscopic analysis of a fossil sample of Vicarya callosa japonica was performed to investigate the chemical process of fossilization. The Vicarya sample, originating from the Miocene Katsuta Group, Okayama prefecture, southwestern Japan, had a conical shell body with multiple protuberances on the outer layer. The interior of the shell was filled with a carbonate sediment. Raman mapping combined with principal component analysis (PCA) and partial least squares regression (PLSR) analysis were performed on the sample. Well-preserved, in vivo aragonite was found to be distributed on the shell and near the boundary between the internal carbonate precipitates and the shell. The internal precipitates were composed of pure calcite and black carbonates. The black-colored precipitates contained pyrite, suggesting that the carbonates were derived from the same biogenic tissue as the carbonate concretions and were the starting point for their crystallization. The rapid formation of the precipitates, also similar to that of carbonate concretions, and the suppression of the demineralization effect of the shell from pore water in the sediment may have contributed to the preservation of the aragonite. The reaction of the transition from aragonite to calcite in the shell progressed to some extent and crystallization was completed before the transition to calcite was complete. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Applied Spectroscopy is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1177/00037028251322807 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 10 StartPage: 1218 Subjects: – SubjectFull: Fossilization Type: general – SubjectFull: Raman spectroscopy Type: general – SubjectFull: Partial least squares regression Type: general – SubjectFull: Miocene Epoch Type: general – SubjectFull: Calcite Type: general – SubjectFull: Principal components analysis Type: general – SubjectFull: Aragonite Type: general – SubjectFull: Gastropoda Type: general Titles: – TitleFull: Analysis of the Fossilization Processes of Vicarya callosa japonica Shells Using Raman Micro-Mapping Combined with Principal Component Analysis and Partial Least Squares Regression. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Tanaka, Yuki – PersonEntity: Name: NameFull: Hashimoto, Kosuke – PersonEntity: Name: NameFull: Ichiki, Toshiya – PersonEntity: Name: NameFull: Sato, Hidetoshi – PersonEntity: Name: NameFull: Ozaki, Yukihiro – PersonEntity: Name: NameFull: Tsuboi, Motohiro IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 08 Text: Aug2025 Type: published Y: 2025 Identifiers: – Type: issn-print Value: 00037028 Numbering: – Type: volume Value: 79 – Type: issue Value: 8 Titles: – TitleFull: Applied Spectroscopy Type: main |
| ResultId | 1 |
