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Electron spin resonance dating
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Different optically stimulated luminescence (OSL) single aliquot regenerative (SAR) saturation characteristics have been previously reported for quartz of diverse grain sizes. This preliminary electron spin resonance (ESR) study documents on paramagnetic signals in natural sedimentary quartz extracts of different grain sizes (4–11 μm, 63–90 μm, 90–125 μm, 125–180 μm, 180–250 μm) extracted from loess and sand samples that are amendable to OSL and ESR dating.
7p
vironald
15-12-2022
10
3
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Testing the upper limit of infrared radiofluorescence (IR-RF) dating in nature is a critical step in developing our understanding of the signal and its potential. The Luochuan loess-palaeosol sequence on the Chinese Loess Plateau is a well-documented sequence spanning over 2.5 Ma, that has served as a proving ground for many trapped charge dating techniques, for example: feldspar post-infrared infrared stimulated luminescence (pIRIR), quartz electron spin resonance (ESR), and quartz violet stimulated luminescence (VSL).
9p
vironald
15-12-2022
11
4
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The applicability of optically stimulated luminescence (OSL) dating on quartz from South Island, New Zealand is hampered by the poor behaviour of the targeted signals. However, most OSL dating studies have been focused on using coarse quartz fractions.
9p
vironald
15-12-2022
5
3
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The results obtained with each experimental configuration are highly consistent for both the Al and Ti centres. In particular, equivalent dose values obtained from eleven of the twelve samples analysed agree at a 1σ confidence level. The various cryogenic systems do no induce any significant systematic bias for ESR dose evaluation.
7p
vironald
15-12-2022
7
3
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Determining the upper dating limits of electron spin resonance (ESR) signals is essential to assess the reliability of ESR ages. Saturation and thermal lifetime are mainly factors that constrain the upper dating limit of ESR signals.
8p
vironald
15-12-2022
11
3
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