Norm-norm upper semi-continuous
middle age and old age people
rock-forming age and ore-forming age
SHRIMP U-Pb zircon age and whole rock Rb-Sr isochrone age
锆石SHRIMP U-Pb和全岩Rb-Sr等时线年龄
L-2 norm fuzzy support vector machine(L-2 norm FSVM)
(40)Ar-(39)Ar age dating
~(39)Ar~-~(40)Ar isotopic age
~(40)Ar~(-39)Ar age spectrum
“Post Marinoan” ice age
40Ar- 39Ar age of muscovite