Electron Spin Resonance dating of the Late Quaternary megafauna fossils from Baixa Grande, Bahia, Brazil

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 show that whereas the luminescence of feldspar can only resolve minimum cooling histories of ∼160 °C/Myr over timescales of 103–5 a, quartz ESR may resolve cooling histories as low as 25–50 °C/Myr over timescales of 103–7 a. 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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ESR Chronology of Bedrock Fault Activity in Carbonate Area: Preliminary Results from the Study of the Lijiang-Xiaojinhe Fault, Southeastern Tibet, China

Geochronometria ◽

10.2478/geochr-2020-0033 ◽

2021 ◽

Vol 48 (1) ◽

pp. 215-221

Author(s):

Gongming Yin ◽

Chunru Liu ◽

Renmao Yuan ◽

Fei Han ◽

Rui Ding ◽

...

Keyword(s):

Electron Spin Resonance ◽

Electron Spin ◽

Active Fault ◽

Late Quaternary ◽

Esr Dating ◽

Fault Activity ◽

Spin Resonance ◽

Radiocarbon Data ◽

Carbonate Area ◽

Southeastern Tibet

Abstract Carbonated rocks constitute one of the main lithologies of the southeastern Tibet area, China, a tectonically very active zone. However, due to the lack of suitable dating materials, it is difficult to carry out chronological studies of the local tectonic evolution in such carbonate areas. In the present study, electron spin resonance (ESR) method had been applied on the dating of carbonates heated during fault activity of the Lijiang-Xiaojinhe (LX) Fault, an important active fault located in the northwest of Yunnan Province. Clear displaced landforms show that the fault has undergone strong late-Quaternary activity. During the fault activity, the heat produced by friction lead to the melting of the frictional surface of the rocks, and the melting can attenuate or zero the ESR dating signal of carbonate. The aim of the present paper was to check the ability of carbonate use to chronologically identify fault activity using electron spin resonance (ESR) method. The results showed the last fault activity of the LX fault was dated by ESR about 2.0±0.2 ka ago, in agreement with historical and radiocarbon data. Hence ESR can be if necessary a practicable dating alternative method for the study of fault activity chronology in carbonate rock area.

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Aminostratigraphy and electron spin resonance studies of late Quaternary sea level change and coastal neotectonics in Tasmania, Australia

Zeitschrift für Geomorphologie ◽

10.1127/zfg/35/1991/129 ◽

1991 ◽

Vol 35 (2) ◽

pp. 129-149

Author(s):

Colin V. Murray-Wallace ◽

Albert Goede

Keyword(s):

Electron Spin Resonance ◽

Sea Level ◽

Electron Spin ◽

Late Quaternary ◽

Sea Level Change ◽

Level Change ◽

Spin Resonance

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Electron spin resonance (ESR) thermochronometry of the Hida range of the Japanese Alps: validation and future potential

Geochronology ◽

10.5194/gchron-2-1-2020 ◽

2020 ◽

Vol 2 (1) ◽

pp. 1-15 ◽

Cited By ~ 4

Author(s):

Georgina E. King ◽

Sumiko Tsukamoto ◽

Frédéric Herman ◽

Rabiul H. Biswas ◽

Shigeru Sueoka ◽

...

Keyword(s):

Thermal Stability ◽

Electron Spin Resonance ◽

Electron Spin ◽

Late Stage ◽

Late Quaternary ◽

Spin Resonance ◽

Charge Concentration ◽

Future Potential ◽

Thermal Histories ◽

Thermal Stability Of

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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