| Revue: | Quimica nova |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000313451 |
| ISSN: | 0100-4042 |
| Autores: | Lima, Ricardo Jorge Cruz1 Saraiva, Antonio Alamo Feitosa2 Lanfredi, Silvania3 Nobre, Marcos Augusto de Lima Freire, Paulo de Tarso Cavalcante4 Sasaki, Jose Marcos |
| Instituciones: | 1Universidade Regional do Cariri, Departamento de Fisica, Juazeiro do Norte, Ceara. Brasil 2Universidade Regional do Cariri, Departamento de Ciencias Fisicas e Biologicas, Crato, Ceara. Brasil 3Universidade Estadual Paulista "Julio de Mesquita Filho", Faculdade de Ciencias e Tecnologia, Presidente Prudente, Sao Paulo. Brasil 4Universidade Federal do Ceara, Departamento de Fisica, Fortaleza, Ceara. Brasil |
| Año: | 2007 |
| Periodo: | Feb |
| Volumen: | 30 |
| Número: | 1 |
| Paginación: | 22-24 |
| País: | Brasil |
| Idioma: | Portugués |
| Tipo de documento: | Artículo |
| Enfoque: | Experimental, aplicado |
| Resumen en inglés | The study of fossils has made considerable progress over the last years as a result of the use of new experimental techniques. This paper describes the chemical composition of a fossilized fish of the Cretaceous period, from a 100 million-year-old, material originated from the Araripe Basin (northeastern Brazil). The chemical composition of the fossilized fish was analyzed by means of X-ray powder diffraction and Fourier transform infrared spectroscopy (FT-IR). The spectroscopic study has proven that the main substances found in the fossilized fish are CaCO3 and Ca5(PO4)3(OH). A tentative mechanism to explain the fossilization process is also given |
| Disciplinas: | Biología, Química |
| Palabras clave: | Paleontología, Peces, Fósiles, Composición química, Difracción de rayos X, Espectroscopía de infrarrojo por transformada de Fourier, Cretácico |
| Keyword: | Biology, Chemistry, Fish, Paleontology, Fossils, Chemical composition, X-ray diffraction, Fourier transform infrared spectroscopy, Cretaceous |
| Texte intégral: | Texto completo (Ver HTML) |
