isochron

名词 n.
中文释义

英文释义

名词 n.
  1. A line on a chart linking rock of the same age (as determined from isotope ratios).
    — Recapitulating, any suite of comagmatic rocks with an age t defines an isochron if its members all had the same initial ^{₈₇}Sr/^{₈₆}Sr ratio and if it was closed to both Rb and Sr since crystallization occurred and neither element was introduced from any extraneous source.[…]In this way, whole-rock Rb-Sr isochrons can produce rather reliable age data for rock samples.
  2. A collection of points (such as a manifold), each point representing a set of initial conditions for a given dynamical system, such that every set results in the same long-term behaviour of the system.
    — The entire plane is foliated by isochrons.

词形变化

isochrons plural

词汇关系

衍生词
isochron dating isochron diagram
相关词
isochronism isochronous isochrony isochrone

词源

Etymology tree
Ancient Greek ῐ̓́σος (ĭ́sos)lbor.
English iso-
English chron
English isochron
From iso- + chron.
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