Abstract
The calcitic skeleton of triassic Demospongiae produces intense fluorescent radiations when they are exposed to UV (365 nm) under the microscope. This fluorescent light has been analysed by spectrophotometry, and the skeletal response is also correlated with data obtained by X-rays mapping. These results suggest that UV epifluorescence can be used for in situ caracterization of the skeletal carbonate materials in fossils, and also, after further analysis of the emission parameters, for researchs dealing with their diagenetic evolution.
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