Study of coprolites from the araripe sedimentary basin through FT-IR spectroscopy and X-ray diffraction

被引：0
|
作者：
Cruz Lima, Ricardo Jorge [2 ]
Freire, Paulo de Tarso Cavalcante [1 ]
Sasaki, Jose Marcos [1 ]
Feitosa Saraiva, Antonio Alamo [3 ]
Lanfredi, Silvania [4 ]
de Lima Nobre, Marcos Augusto [4 ]
机构：
[1] Univ Fed Ceara, Dept Fis, BR-60455760 Fortaleza, Ceara, Brazil
[2] Univ Fed Maranhao, Ctr Ciencias Sociais Saude & Technol, BR-65900410 Imperatriz, MA, Brazil
[3] Univ Reg Cariri, Dept Ciencias Fis & Biol, BR-63105000 Crato, Ceara, Brazil
[4] Univ Estadual Paulista, Dept Quim Fis & Biol, Fac Ciencias & Tecnol, BR-19060080 Presidente Prudente, SP, Brazil
来源：
QUIMICA NOVA | 2007年 / 30卷 / 08期
关键词：
coprolites; X-ray diffraction; Fourier transform infrared spectroscopy;
D O I：
暂无
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
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 Ceara 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.
引用
收藏
页码：1956 / 1958
页数：3
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