Estudo de coprólito da bacia sedimentar do Araripe por meios de espectroscopia FT-IR e difração de Raios-X
Data
2007-01-01
Autores
Lima, Ricardo Jorge Cruz
Freire, Paulo de Tarso Cavalcante
Sasaki, José Marcos
Saraiva, Antonio Álamo Feitosa
Lanfredi, Silvania [UNESP]
Nobre, Marcos Augusto de Lima [UNESP]
Título da Revista
ISSN da Revista
Título de Volume
Editor
Sociedade Brasileira de Química
Resumo
Coprolites are fossilized faeces that constitute an important source of palaeobiological informations. This paper describes the characterization of some coprolite materials originated from the Romualdo Member of the Santana Formation (Araripe Basin, south of Ceará State in Brazil) by means of two techniques: X-ray powder diffraction and Fourier transform infrared spectroscopy (FT-IR). This characterization allowed us to determine the main composition of the coprolites, of the nodulus (where the coprolites were extracted) and of the sediment (where the nodulus was found) suggesting that the material was produced by a carnivorous fish of the Lower Cretaceous.
Descrição
Palavras-chave
coprolites, X-ray diffraction, Fourier transform infrared spectroscopy
Como citar
Química Nova. Sociedade Brasileira de Química, v. 30, n. 8, p. 1956-1958, 2007.