Quel mot ?

Définition : “A body of rock identified by physical characteristics and stratigraphic position and mappable at the earth's surface or traceable in the subsurface. The _________ is the fundamental unit in lithostratigraphic classification. Formations can be subdivided into members or lumped together into groups.”

Première lettre : F

Réponse :  

Quel est le mot dont la définition vous est fournie ?

Score "QI" : 0
 
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