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Electron Spin Resonance (ESR) Signal Intensity of Quartz E1′ Centre and Its Potential Use in Fluvial Sediments Provenance Tracing

Chuan-Yi Wei
Chuan-Yi Wei
, 
Chun-Ru Liu
Chun-Ru Liu
, 
Gong-Ming Yin
Gong-Ming Yin
 et 
Wen-Peng Li
Wen-Peng Li
   | 31 déc. 2021
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Publié en ligne: 31 déc. 2021
Pages: 197 - 204
Reçu: 08 janv. 2019
Accepté: 02 avr. 2020
DOI: https://doi.org/10.2478/geochr-2020-0040
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© 2019 Chuan-Yi Wei et al., published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Fig. 1

Map showing study area and geological setting of sampling sites. (a) and (b) show study area located in the eastern Tibetan Plateau. (c) show geological setting and sampling site of Kang’ding River and Diao’tengzi River. The Pan’zhihua River and the Mian’ning River are marked as two black circles on 1–(b). The source rock age data are from China Intrusive Rock Isotope Age Atlas by K-Ar dating method.
Map showing study area and geological setting of sampling sites. (a) and (b) show study area located in the eastern Tibetan Plateau. (c) show geological setting and sampling site of Kang’ding River and Diao’tengzi River. The Pan’zhihua River and the Mian’ning River are marked as two black circles on 1–(b). The source rock age data are from China Intrusive Rock Isotope Age Atlas by K-Ar dating method.

Fig. 2

Typical E1’ centre ESR spectrum of quartz in this study.
Typical E1’ centre ESR spectrum of quartz in this study.

Fig. 3

The heat-treated E1’ signal intensity response to heating temperatures. The similar changes upon heating indicate that the heat-treated E1’ signal intensity of quartz extracted from fluvial sediment can reach the maximum value at about 300°C for 15 min. However, the maximum heat-treated E1’ signal intensity varies in quartz with different formation ages. For example, PZH03 reaches the maximum value at 300°C while DTZG03 at 330°C. Above about 400°C, the E1’ signal intensity of PZH03 and DTZG03 are zero.
The heat-treated E1’ signal intensity response to heating temperatures. The similar changes upon heating indicate that the heat-treated E1’ signal intensity of quartz extracted from fluvial sediment can reach the maximum value at about 300°C for 15 min. However, the maximum heat-treated E1’ signal intensity varies in quartz with different formation ages. For example, PZH03 reaches the maximum value at 300°C while DTZG03 at 330°C. Above about 400°C, the E1’ signal intensity of PZH03 and DTZG03 are zero.

Fig. 4

Correlation between heat-treated E1’ signal intensity of quartz in source rock and its fluvial sediments heated at 300°C (a) and 330°C (b).
Correlation between heat-treated E1’ signal intensity of quartz in source rock and its fluvial sediments heated at 300°C (a) and 330°C (b).

Fig. 5

Correlation between rock age and its heat-treated E1’ signal intensity. (a) heating temperature is 300°C; (b) heating temperature is 330°C.
Correlation between rock age and its heat-treated E1’ signal intensity. (a) heating temperature is 300°C; (b) heating temperature is 330°C.

Sample information used in this study.

No. Drainage Sample name Sample type Latitude (°N) Longitude (°E) Rock age and dating method used
1 Mian’ning River MN05 modern river sediments 28°31′30″ 102°03′42″ 134 Ma (kb)
2 MN06 bedrocks 28°31′30″ 102°03′42″ 134 Ma (kb)
3 Kang’ding River KD05 bedrocks 29°54′34″ 101°57′24″ 227 Ma (kb)
4 KD06 modern river sediments 29°59′42″ 101°56′50″ 227 Ma (kb)
5 Pan’zhihua River PZH01 bedrocks 26°25′21″ 101°44′00″ 783 Ma (uz)
6 PZH03 modern river sediments 26°25′28″ 101°44′48″ 783 Ma (uz)
7 Diao’tengzi River DTZG03 historical sediments 29°16′01″ 102°18′26″ 821 Ma (kw)
8 DTZG04 modern river sediments 29°16′01″ 102°18′26″ 821 Ma (kw)

Difference of quartz heat-treated E1’ signal intensity between sediment and its source rock.

drainage heating temperature (°C) heat-treated E1′ signal intensity |(A-B)| (A+B)/2 difference value (%)
sediment source rock
Mian’ning River 300 1.06 1.22 0.16 1.14 14
330 1.06 1.21 0.15 1.135 13
Kang’ding River 300 2.60 2.36 0.24 2.48 10
330 2.61 2.36 0.25 2.49 10
Pan’zhi’hua River 300 6.75 6.31 0.44 6.53 7
330 6.74 6.30 0.44 6.52 7
Diao’teng’zi River 300 8.82 9.64 0.82 9.23 9
330 11.92 10.58 1.34 11.25 12
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