Accès libre

Electron Spin Resonance Dating of the Quaternary Fluvial Terrace System of the Upper Han River, Central China

Wenqin Dong
Wenqin Dong
, 
Song Yu
Song Yu
, 
Qing Hu
Qing Hu
, 
Jianchao Wu
Jianchao Wu
, 
Dongning Lei
Dongning Lei
 et 
Yongjian Cai
Yongjian Cai
   | 29 févr. 2024
Geochronometria's Cover Image
À propos de cet article
Article précédent
Article suivant
Citez
Publié en ligne: 29 févr. 2024
Pages: 157 - 165
Reçu: 28 août 2023
Accepté: 02 janv. 2024
DOI: https://doi.org/10.2478/geochr-2023-0013
Mots clés
© 2024 Wenqin Dong et al., published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Fig 1.

Geological setting and sampled terrace profiles of the upper Han River, China.
Geological setting and sampled terrace profiles of the upper Han River, China.

Fig 2.

Sketch map showing the sampling profile stratigraphy and field photographs of the Wufeng, Qingqu and Yunyang terrace systems of the upper Han River, China.
Sketch map showing the sampling profile stratigraphy and field photographs of the Wufeng, Qingqu and Yunyang terrace systems of the upper Han River, China.

Fig 3.

ESR spectrum showing the method used to determine the ESR signal intensity of the Ti–Li centre. Red arrows represent the measurement positions and g values of the Al and Ti–Li centres. ESR, electron spin resonance.
ESR spectrum showing the method used to determine the ESR signal intensity of the Ti–Li centre. Red arrows represent the measurement positions and g values of the Al and Ti–Li centres. ESR, electron spin resonance.

Fig 4.

Dose–response curves of the quartz Ti–Li centre for samples collected from terraces T3–T5 of the upper Han River. ESR, electron spin resonance.
Dose–response curves of the quartz Ti–Li centre for samples collected from terraces T3–T5 of the upper Han River. ESR, electron spin resonance.

Fig 5.

Correspondence between the ages of upper Han River terraces and climate change recorded by marine δ18O.
Correspondence between the ages of upper Han River terraces and climate change recorded by marine δ18O.

Results of ESR dating for the Wufeng, Qingqu, and Yunyang Basin terraces in the upper Han River valley.

Sampling profile Terrace level Sample no. Above sea level (m) Thick of the profile U (ppm) Th (ppm) K (%) Water content (%) Dose rate (Gy/ka) De (Gy) Age (ka)
Wufeng terrace profile T3 WFT3ESR 215 9 3.00 ± 0.11 15.20 ± 0.05 2.07 ± 0.08 18 ± 3 3.04 ± 0.15 1269 ± 145 417 ± 48
T4 WFT4ESR 235 10 2.57 ± 0.11 14.10 ± 0.05 2.91 ± 0.05 17 ± 3 3.58 ± 0.18 2246 ± 348 627 ± 97
T5 WFT5ESR 277 15 2.35 ± 0.11 12.41 ± 0.05 2.47 ± 0.05 18 ± 3 3.05 ± 0.15 3371 ± 556 1105 ± 182
Qingqu terrace profile T3 QUT3ESR 175 14 2.90 ± 0.11 14.80 ± 0.05 1.97 ± 0.05 16 ± 3 3.00 ± 0.15 1214 ± 123 405 ± 41
T4 QUT4ESR 203 5 2.65 ± 0.11 13.30 ± 0.05 2.15 ± 0.05 17 ± 3 2.96 ± 0.15 1840 ± 227 622 ± 77
T5 QUT5ESR 249 23 2.06 ± 0.11 13.29 ± 0.05 2.25 ± 0.05 16 ± 3 2.96 ± 0.15 3343 ± 359 1129 ± 121
Yunayng basin terrace profile T3 YYT3ESR 165 20 3.00 ± 0.11 15.40 ± 0.05 1.98 ± 0.05 18 ± 3 2.98 ± 0.15 1258 ± 199 422 ± 67
T3 YYT3ESR 167 20 2.90 ± 0.11 16.00 ± 0.05 1.96 ± 0.05 18 ± 3 2.98 ± 0.15 1194 ± 175 401 ± 59
T4 YYT4ESR 232 24 2.57 ± 0.11 13.70 ± 0.05 2.22 ± 0.05 16 ± 3 3.07 ± 0.15 1905 ± 161 621 ± 52
T5 YYT5ESR 274 6 2.34 ± 0.11 11.8 ± 0.05 2.39 ± 0.05 18 ± 3 2.96 ± 0.15 3261 ± 475 1102 ± 160
T5 YYT5ESR 275 6 2.41 ± 0.11 11.81 ± 0.05 2.47 ± 0.05 17 ± 3 3.07 ± 0.15 3375 ± 360 1099 ± 117
eISSN:
1897-1695
Langue:
Anglais
Périodicité:
Volume Open
Sujets de la revue:
Geosciences, other
RSS Feed de la revue