roche (1) fer (1) analyse (1) champ (1) expérience scientifique (1) datation (1) refroidissement (1) Afrique (1) taux (1) Afrique (1) Variation (1) Agreement (1) Dating (1) Metallurgy (1) Antiquities, Prehistoric (1) Technique (1) Plaster (1) Metallurgy (1) Prehistoric peoples (1) Iron (1) Furnaces (1) Fourteenth century (1) Cooling (1) Carbon--Isotopes (1) Buildings (1) Anisotropy (1) Africa, Sub-Saharan (1) Africa (1) Universe (1) 14th century (1)