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isochron
isochron (ˈaɪsəʊˌkrɒn) n1. (Geological Science) a line on an isotope ratio diagram denoting a suite of rock or mineral samples all formed at the same time. The slope of the line is related to the age of the rock or mineral suite2. (Geological Science) a line or curve on a geological map or cross section (esp of oceanic crust) connecting points of identical ageisochron
isochron[′ī·sə‚krän] (geochemistry) A line on a graph defined by data for rocks of the same age with the same initial lead isotopic composition, the slope of which is proportional to the age. Also known as geochron. MedicalSeeisosorbide dinitrateThesaurusSeeisochrone |