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Dictionary


teph•ro•chro•nol•o•gy



Pronunciation: (tef"rō-kru-nol'u-jē), [key]
n. Geol.
a geochronologic technique based on the dating of layers of volcanic ash. Cf. tephra.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

tephritetephroite

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