Using acids to extract calcareous microfossils from carbonate rocks

This work introduces an alternative method for extracting calcareous microfossils from carbonate rocks using acetic and hydrochloric acids. The method, developed at the Laboratory of Micropaleontology, Dept. of Geology/Federal University of Rio de Janeiro (UFRJ), has proved to be efficient in separa...

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Bibliographic Details
Published in:Micropaleontology 1999, Vol.45 (4), p.429-436
Main Authors: Costa de Moura, Jorge, de Moraes Rios-Netto, Aristoteles, Wanderley, Maria Dolores, Pereira de Sousa, Fernando
Format: Article
Language:English
Subjects:
Acid treatment
algae
calcareous algae
Carbonate rocks
Carbonates
current research
Homogenization
Hydrogen
Microfossils
Micropaleontology
Paleobotany
Peroxides
Plantae
Rocks
sample preparation
sedimentary rocks
Specimens
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Summary:This work introduces an alternative method for extracting calcareous microfossils from carbonate rocks using acetic and hydrochloric acids. The method, developed at the Laboratory of Micropaleontology, Dept. of Geology/Federal University of Rio de Janeiro (UFRJ), has proved to be efficient in separating carbonate tests through the application of acids with controlled reaction time. Compared to traditional methods, especially to hydrogen peroxide digestion, the best results show an almost eight-fold increase in the number of extracted microfossil tests. The time required for the procedure does not exceed 2 hours.
ISSN:0026-2803
1937-2795
DOI:10.2307/1486124