Annealing characteristics of fission tracks in hornblende

Annealing characteristics of fission tracks in hornblende

Systematic annealing experiments of fission tracks were carried out with three hornblendes from a granodiorite, a schist and an andesite. Almost all tracks disappeared in 2 hours at 550°C for hornblende from a granodiorite and at 650°C for those from a schist and an andesite. Extrapolation of experi...

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Veröffentlicht in:GEOCHEMICAL JOURNAL 1978/03/20, Vol.12(1), pp.65-67
Hauptverfasser: Osaki, Susumu, Katsube, Hiromitsu, Okaguchi, Masako, Takashima, Yoshimasa
Format: Artikel
Sprache:eng
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Zusammenfassung:Systematic annealing experiments of fission tracks were carried out with three hornblendes from a granodiorite, a schist and an andesite. Almost all tracks disappeared in 2 hours at 550°C for hornblende from a granodiorite and at 650°C for those from a schist and an andesite. Extrapolation of experimentally determined temperatures suggests that fission tracks in hornblende become undetected, if heated above 300 ± 50°C for the period between 102 and 106 years.
ISSN:0016-7002
1880-5973
DOI:10.2343/geochemj.12.65