Combination of Raman, Infrared, and X-Ray Energy-Dispersion Spectroscopies and X-Ray Diffraction to Study a Fossilization Process

Autor:	João Hermínio da Silva, Antônio Álamo Feitosa Saraiva, Bartolomeu C. Viana, Paulo Freire, Deyvid Dennys S. Brito, Francisco Eduardo de Sousa Filho, B.T.O. Abagaro
Rok vydání:	2011
Předmět:	Physics biology Infrared General Physics and Astronomy Infrared spectroscopy Mineralogy engineering.material biology.organism_classification Fossilization Brachyphyllum symbols.namesake X-ray crystallography engineering symbols Pyrite Raman spectroscopy Silicon oxide
Zdroj:	Brazilian Journal of Physics. 41:275-280
ISSN:	1678-4448 0103-9733
Popis:	X-ray diffraction was combined with X-ray energy-dispersion, Fourier-transform infrared, and Raman spectroscopies to study the fossilization of a Cretaceous specimen of the plant Brachyphyllum castilhoi, a fossil from the Ipubi Formation, in the Araripe Sedimentary Basin, Northeastern Brazil. Among the possible fossilization processes, which could involve pyrite, silicon oxide, calcium oxide, or other minerals, we were able to single out pyritization as the central mechanism producing the fossil, more than 100 million years ago. In addition to expanding the knowledge of the Ipubi Formation, this study shows that, when combined with other experimental techniques, Raman spectroscopy is a valuable tool at the paleontologist’s disposal.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::6314da44ff12b4f084e7474473c6bb25 https://doi.org/10.1007/s13538-011-0045-y Zobrazit plný text záznamu Full text from SpringerLink