What is the difference between a chemical signature and a chemical fingerprint?

03 March 2016 1 10K Report

I think that both terms have been used in the literature. Maybe they are the same concept but maybe not.

I think that a chemical signature is characterize a certain rock lithology in a certain area and could vary for the same lithology in different area, while a chemical fingerprint is a standard and a fixed character for a rock lithology which can be used for regional correlation.

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