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Spectroscopic analysis of a theropod dinosaur (Reptilia,Archosauria) from the Ipubi Formation,Araripe Basin,Northeastern Brazil
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نویسنده
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da silva j.h. ,de sousa filho f.e. ,saraiva a.á.f. ,andrade n.a. ,viana b.c. ,sayão j.m. ,abagaro b.t.d.o. ,freire p.d.t.c. ,saraiva g.d.
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منبع
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journal of spectroscopy - 2013 - دوره : 2013 - - کد همایش:
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چکیده
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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. © 2013 joão hermínio da silva et al.
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آدرس
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universidade federal do ceará,campus do cariri,63000-000 juazeiro do norte, Brazil, departamento de física,universidade regional do cariri,63100-100 crato, Brazil, departamento de ciências biológicas,universidade regional do cariri,63100-100 crato, Brazil, departamento de ciências biológicas,universidade regional do cariri,63100-100 crato, Brazil, departamento de física,universidade federal do piauí,64049-550 teresina, Brazil, núcleo de biologia,centro acadêmico de vitória,universidade federal de pernambuco,55608-680 vitória de santo antão, Brazil, departamento de física,universidade federal do ceará,604455-760 fortaleza, Brazil, departamento de física,universidade federal do ceará,604455-760 fortaleza, Brazil, faculdade de educação ciências e letras do sertão central,universidade estadual do ceará,63900-000 quixadá, Brazil
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Authors
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