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Jean Etienne Guettard

(1715—1786)


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(1715–86)

A French geologist who in 1746 constructed the first mineralogical map of France, using symbols to indicate minerals and rock types. He produced the first mineralogical map of N. America in 1752 (although he never went there), and in 1766 began a survey of France with the aim of producing detailed geologic maps.

Subjects: Earth Sciences and Geography.


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