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单词 isochron
释义

isochron

/ˈʌɪsə(ʊ)krɒn /
noun chiefly Geology
A line on a diagram or map connecting points relating to the same time or equal times.Age of movement has been deduced from Rb-Sr mineral isochrons....
  • An isochron defined by only two rutile points yields an age of 384 + / - 4 Ma.
  • Steve Austin describes the three methods of radioactive dating: 1) the model age, 2) the whole rock isochron, and 3) the mineral isochron.

Origin

Late 17th century (as an adjective in the sense 'isochronous'): from Greek isokhronos, from isos 'equal' + khronos 'time'.

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更新时间:2024/12/23 21:58:43