<abstract xmlns="http://www.w3.org/1999/xhtml">

Three quartz samples extracted from different origins were collected for ESR evaluation to appreciate the optical bleaching characteristics of the <italic>E1</italic>’ centre in a long time scale. After exposure of about 400 hours to artificial sunlight, the <italic>E1</italic>’ centre were bleached to a steady increasing level, about 2.5 times of its natural level, and the increase level also exhibit a small variability among different sample origins. The constant increasing level provide a significantly evidence for the potential use of the natural signal intensities of quartz <italic>E1</italic>’ centre in tracing sediment provenance. The results show that the signal intensity of <italic>E1</italic>’ centre increased within beginning 84 h and decreased after 202 h as previous researches have partly predicted. After long time exposed to sunlight, there is no correlation between irradiated samples’ dose rate and its <italic>E1</italic>’ centre ESR signal intensity. Thus, no new convenient indication shed light on the possible use of the <italic>E1</italic>’ centre for ESR sediment dating.</abstract>

Three quartz samples extracted from different origins were collected for ESR evaluation to appreciate the optical bleaching characteristics of the E1’ centre in a long time scale. After exposure of about 400 hours to artificial sunlight, the E1’ centre were bleached to a steady increasing level, about 2.5 times of its natural level, and the increase level also exhibit a small variability among different sample origins. The constant increasing level provide a significantly evidence for the potential use of the natural signal intensities of quartz E1’ centre in tracing sediment provenance. The results show that the signal intensity of E1’ centre increased within beginning 84 h and decreased after 202 h as previous researches have partly predicted. After long time exposed to sunlight, there is no correlation between irradiated samples’ dose rate and its E1’ centre ESR signal intensity. Thus, no new convenient indication shed light on the possible use of the E1’ centre for ESR sediment dating.

Application of long time artificial optical bleaching of the E1’ centre to sediment ESR dating

Geochronometria

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Application of long time artificial optical bleaching of the E’ centre to sediment ESR dating

Three quartz samples extracted from different origins were collected for ESR evaluation to appreciate the optical bleaching characteristics of the E1’ centre...

Application of long time artificial optical bleaching of the E₁’ centre to sediment ESR dating

Article Category: Regular Articles

Publié en ligne: 17 mai 2019

Pages: 79 - 86

Reçu: 01 oct. 2018

Accepté: 18 mars 2019

DOI: https://doi.org/10.1515/geochr-2015-0106

Mots clés
quartz, the ’ centre, optical bleaching, long time scale, ESR dating, provenance tracing

© 2018 C.-Y. Wei, published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Application of long time artificial optical bleaching of the E1’ centre to sediment ESR dating

Article Category: Regular Articles

Publié en ligne: 17 mai 2019

Pages: 79 - 86

Reçu: 01 oct. 2018

Accepté: 18 mars 2019

DOI: https://doi.org/10.1515/geochr-2015-0106

Mots clésquartz, the ’ centre, optical bleaching, long time scale, ESR dating, provenance tracing

© 2018 C.-Y. Wei, published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Application of long time artificial optical bleaching of the E₁’ centre to sediment ESR dating

Mots clés
quartz, the ’ centre, optical bleaching, long time scale, ESR dating, provenance tracing