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isochron
(redirected from isochrones)

   Also found in: Encyclopedia 0.01 sec.
isochron [ˈaɪsəʊˌkrɒn]
n (Earth Sciences / Geological Science)
1. 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 suite (Earth Sciences / Geological Science)
2. a line or curve on a geological map or cross section (esp of oceanic crust) connecting points of identical age


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Another case of a glacially dammed lake in this region had been proposed by Upham (O-1895a), who drew isochrones on the margin of the Laurentide ice sheet as he envisaged it retreating northeastward across the St.
The minimal error between isochrones of the physiologic excitation and the therapy was computed automatically and leads to an optimal lead position and timing.
 
 
 
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