Abstract
Abstract. The electron spin resonance (ESR) of quartz has previously been
shown to have potential for determining rock cooling histories; however, this
technique remains underdeveloped. In this study, we explore the ESR of a
suite of samples from the Hida range of the Japanese Alps. We develop
measurement protocols and models to constrain the natural trapped-charge
concentration as well as the parameters that govern signal growth and signal
thermal decay. The thermal stability of the Al and Ti centres is similar to
that of the luminescence of feldspar. Inverting the ESR data for cooling
yields similar thermal histories to paired luminescence data from the same
samples. However, a series of synthetic inversions shows that whereas the
luminescence of feldspar can only resolve minimum cooling histories of
∼160 ∘C Myr−1 over timescales of 103−5 years,
quartz ESR may resolve cooling histories as low as 25–50 ∘C Myr−1
over timescales of 103−7 years. This difference arises because quartz ESR
has a higher dating limit than the luminescence of feldspar. These results
imply that quartz ESR will be widely applicable in the constraint of
late-stage rock cooling histories, providing new insights into landscape
evolution over late Quaternary timescales.
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20 articles.
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