@article{oai:tohoku.repo.nii.ac.jp:00047044,
 author = {SAITO, Kazuo},
 issue = {1},
 journal = {Science reports of the Research Institutes, Tohoku University. Ser. A, Physics, chemistry and metallurgy},
 month = {Sep},
 note = {application/pdf, It is well known that, by the K-Ar dating, a reliable age cannot be obtained from a sample containing excess Ar. The ^<40>Ar-^<39>Ar method, on the other hand, has, potentially, ability to provive us geologically meaningful ages even for such samples with excess Ar. A Mowson charnockite from Antarctica shows a good example. In the ^<40>Ar-^<39>Ar dating, thermal neutron induced ^<40>Ar from 40K is one of the major source of errors in age calculation. Wrapping a sample with Cd foil is very effective in reducing this disturbing ^<40>Ar., 紀要類(bulletin), 413096 bytes},
 pages = {185--189},
 title = {Excess Ar in Some Metamorphic and Plutonic Rocks and Reduction of Thermal Neutron-induced ^<40>Ar by Cd Shielding},
 volume = {40},
 year = {1994}
}