Spectroscopic Analysis of a Theropod Dinosaur (Reptilia, Archosauria) from the Ipubi Formation, Araripe Basin, Northeastern Brazil

The Araripe Sedimentary Basin is known by the excellence of its fossils, regarding the preservation, diversity, and quantity. Here, we present a spectroscopic analysis using several experimental techniques (X-ray energy dispersion spectroscopy, Fourier-transform infrared spectroscopy) as well as X-r...

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Bibliographic Details
Published in:Journal of spectroscopy (Hindawi) 2013-01, Vol.2013 (2013), p.1-7
Main Authors: da Silva, João Hermínio, de Sousa Filho, Francisco Eduardo, Saraiva, Antônio Álamo Feitosa, Andrade, Nádia Amanda, Viana, Bartolomeu Cruz, Sayão, Juliana Manso, Abagaro, Bruno Tavares de Oliveira, Freire, Paulo de Tarso Cavalcante, Saraiva, Gilberto Dantas
Format: Article
Language:English
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Summary:The Araripe Sedimentary Basin is known by the excellence of its fossils, regarding the preservation, diversity, and quantity. Here, we present a spectroscopic analysis using several experimental techniques (X-ray energy dispersion spectroscopy, Fourier-transform infrared spectroscopy) as well as X-ray diffraction and thermogravimetric analysis applied in small fragments of bones from the posterior members of a theropod dinosaur. The results agree regarding the different composition of the stone matrix and the fossilized bone, indicating a partial substitution of the material by elements present in the depositional environment. However, differently from what is believed to occur, there is evidence that pyritization is not the only mechanism of fossilization for a specimen of Ipubi formation, but calcification, additionally, plays an important role in the fossil production of this Formation.
ISSN:2314-4920
2314-4939
DOI:10.1155/2013/437439