68 - - XXIV, 2013.03 Chronology Mas ak:i ENAMI " 1 Nagoya Center for Chronological Research *Correspondence ENAMI; E-mail: enami@nagoya-uJp of chronological data for was reviewed. Shibata (1983) duration of lithification deposition of sediment as 17 million combination of radiolarian fossil and 87Rb_ 87Sr whole rock isochron ages. (1992) reported a youngest on Earth from the Northern Alps, central Japan , based on the K- Ar and biotite Rb-Sr biotite zircon age. rocks generally record ages of many equilibrium during evolution. (2004) confrrmed five zircon growth pressure metamorphic rocks from the Kokchetav exhumation as 0 .5 -0.6 using Secondary Ion Mass Keywords: Petrology; dating; metamorphic rock; igneous rock;
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Keywords: Petrology; dating; metamorphic rock; …confrrmed five stag田ofzircon growth in叫回-highpressure metamorphic rocks from the Kokchetav 皿assif,岨d田timated白eirexhumation
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68- -
名古屋大学加速器質量分析計業績報告書, XXIV, 2013.03
岩石学と年代測定
LiI虫 h阿国,n Petrology岨d Chronology
榎並正樹 1織
Masak:i ENAMI"
1 名古屋大学年代測定総合研究センター
1 Nagoya U凶versity Center for Chronological Research
*Correspondence to ・ MasakiENAMI; E-mail: enami@nagoya-uJp
Abs位'act
Me血血g of chronological data for pe回logical s卸dおs was reviewed. Mizutani 阻dShibata (1983) estima臼dduration of lithification after 泊itial deposition of sediment as 17 million ye町sus泊gacombination of radiolarian fossil and 87Rb_ 87Sr whole rock isochron ages. Haraya皿a (1992) reported a
youngest expos凶宮町útoid pluωn on Earth from the Northern Alps, central Japan, based on the K-Ar h凹lblende and biotite ag回,Rb-Sr biotite age,岨d fission 位ackzircon age. Met町n町phic rocks generally record ages of many equilibrium s旬.ges during me旬皿orphic evolution. Kataya皿a (2004)
confrrmed five stag田 ofzircon growth in叫回-high pressure metamorphic rocks from the Kokchetav 皿assif,岨d 田timated 白eir exhumation sp田das 0.5-0.6 cm!y回rusing Secondary Ion Mass Spectrome佐y.
Keywords: Petrology; dating; metamorphic rock; igneous rock; sedimentaη rock