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レーザープローブを用いた ^<40>Ar/^<39>Ar年代測定法と若い年代(第18回名古屋大学年代測定総合研究センターシンポジウム平成 17(2005)年度報告)
Laser probe ^<40>Ar/^<39>Ar dating method and its application to young ages(Proceedings of the 18^<th> Symposium on Chronological Studies at the Nagoya University Center for Chronological Research in 2005)
兵藤, 博信
Hyodo, Hironobu
open access
名古屋大学年代測定資料研究センター
本文データは学協会の許諾に基づきCiNiiから複製したものである
Laser probe ^<40>Ar/^<39>Ar dating method can be divided into two types of applications. A pulse laser performs a pin point (5 microns) analysis on a thin section. A continuous laser can carry out step heating on a single grain When it comes to an application to young aged rocks, the 5-microns sample size by a pulse laser is too little to be detected. Depending on its application conditions, a minimum limit for a pulse laser may range from 10 Ma to 100 Ma. Successful step heating data was obtained in a order of 10 Ma on a single grain biotite. A key to the further improvement in determining young ages by the laser method is a precise measurement of ^<36>Ar after choosing a sample with a low atmospheric component (i.e. a high potassium content). This can be simply approached by making a sample size larger, partly losing the advantage using a laser.
第18回名古屋大学年代測定総合研究センターシンポジウム平成17(2005)年度報告 Proceedings of the 18th symposiumon on Chronological Studies at the Nagoya University Center for Chronological Research\
in 2005 日時:平成18 (2006)年1月17日(火)、18日(水) 会場:名古屋大学シンポジオン Date:Januaryl7th and 18th, 2006 Venue:Nagoya Uhiversity Symposion Hall
名古屋大学年代測定資料研究センター
2006-03
jpn
departmental bulletin paper
VoR
https://doi.org/10.18999/sumrua.17.14
http://hdl.handle.net/2237/13648
https://nagoya.repo.nii.ac.jp/records/11775
10.18999/sumrua.17.14
名古屋大学加速器質量分析計業績報告書
17
14
21
https://nagoya.repo.nii.ac.jp/record/11775/files/KJ00005461823.pdf
application/pdf
518.3 kB
2018-02-20