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geodetic survey
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geochronometry
ge·o·chro·nom·e·try [ j ō krə nómmətree ]


noun 
Definition:
 
measurement of rock ages: the measurement of the age of a rock, mineral, or sequence of rocks, or of an event such as a volcanic eruption

ge·o·chron·o·met·ric [ j ō kronə méttrik ] adjective
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