Ultra short term or hydrothermal retention experiments of zircon (U-Th)/He age

Yamada, Kunimi; Murakami, Masaki*; Tagami, Takahiro*; Yamada, Ryuji*

no journal, , 

We indicate a relation between heating conditions and helium retentions using zircons heated under ultra short term and hydrothermal conditions. It is important that samples heated in less than one minutes for fault samples. Because the durations of hydrothermal heating are from 10 to 100 hours constrained by technical limitations, the effects of water and pressure are examined through comparison with same durations of dry heating.