Hyodo, Hironobu

兵藤, 博信

Laser probe ^Ar/^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 ^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 Hal

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)

Abstract

Similar works

Full text

Available Versions

Institutional Repositories DataBase (IRDB)