Artículos de revistas
Estudo de coprólito da bacia sedimentar do Araripe por meios de espectroscopia FT-IR e difração de Raios-X
Fecha
2007-01-01Registro en:
Química Nova. Sociedade Brasileira de Química, v. 30, n. 8, p. 1956-1958, 2007.
0100-4042
10.1590/S0100-40422007000800029
S0100-40422007000800029
S0100-40422007000800029.pdf
7201928600704530
7201928600704530
Autor
Universidade Federal do Maranhão (UFMA)
Universidade Federal do Ceará (UFC)
Universidade Regional do Cariri Departamento de Ciências Físicas e Biológicas
Universidade Estadual Paulista (Unesp)
Institución
Resumen
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.