Autor(es): Lima, Ricardo Jorge Cruz ; Saraiva, Antonio Alamo Feitosa ; Lanfredi, Silvania [UNESP] ; Nobre, Marcos Augusto de Lima [UNESP] ; Freire, Paulo de Tarso Cavalcante ; Sasaki, José Marcos
Data: 2014
Identificador Persistente: http://hdl.handle.net/11449/6950
Origem: Oasisbr
Assunto(s): Fossil; X-ray diffraction; Fourier transform infrared spectroscopy
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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
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.
Universidade Regional do Cariri Departamento de Física
Universidade Regional do Cariri Departamento de Ciências Físicas e Biológicas
Universidade Estadual Paulista Faculdade de Ciências e Tecnologia Departamento de Física, Química e Biologia
Universidade Federal do Ceará (UFC) Departamento de Física
Universidade Estadual Paulista Faculdade de Ciências e Tecnologia Departamento de Física, Química e Biologia
