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Timing of Holocene Lake Highstand in Jinchang Paleolake from the Northeast Tibetan Plateau Foreland

Hao Long

Hao Long

  • State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences (NIGLAS)Nanjing, China
  • CAS Center for Excellence in Quaternary Science and Global ChangeXi’an, China
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Long, Hao
, 
Hongyi Cheng

Hongyi Cheng

College of Earth and Environmental Sciences, Lanzhou UniversityLanzhou, China
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Cheng, Hongyi
, 
Linhai Yang

Linhai Yang

School of Geography and Tourism, Shaanxi Normal UniversityXi'an, China
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Yang, Linhai
, 
Lei Gao

Lei Gao

State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences (NIGLAS)Nanjing, China
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Gao, Lei
 and 
Qian Liu

Qian Liu

School of Geography, Nanjing Normal UniversityNanjing, China
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Liu, Qian
  
Dec 31, 2021
Timing of Holocene Lake Highstand in Jinchang Paleolake from the Northeast Tibetan Plateau Foreland's Cover Image
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Article Category: Conference Proceedings of the 5Asia Pacific Luminescence and Electron Spin Resonance Dating Conference October 15–17, 2018, Beijing, China. Guest Editor: Liping Zhou
Published Online: Dec 31, 2021
Page range: 253 - 262
Received: Jan 20, 2019
Accepted: Mar 11, 2020
DOI: https://doi.org/10.2478/geochr-2020-0004
Keywords
© 2019 Hao Long et al., published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Fig. 1

Map showing the location of Jinchang paleolake (star) and other sites (Baijian Lake, Tegger Desert, Mu us Desert, Otindag Desert and Horqin Desert) mentioned in this study. EAM denotes East Asian monsoon, and its northern limit is shown by the blue dashed line (inset).
Map showing the location of Jinchang paleolake (star) and other sites (Baijian Lake, Tegger Desert, Mu us Desert, Otindag Desert and Horqin Desert) mentioned in this study. EAM denotes East Asian monsoon, and its northern limit is shown by the blue dashed line (inset).

Fig. 2

Photos of outcrop sampled for luminescence and radiocarbon dating.
Photos of outcrop sampled for luminescence and radiocarbon dating.

Fig. 3

Preheat temperature plateau tests for quartz samples: NL-579 (a), NL-580 (b), and NL-581 (c).
Preheat temperature plateau tests for quartz samples: NL-579 (a), NL-580 (b), and NL-581 (c).

Fig. 4

Histogram summarizing dose recovery ratios for three quartz samples.
Histogram summarizing dose recovery ratios for three quartz samples.

Fig. 5

(a) The normalized OSL decay curve of sample NL-579 was decomposed into three components, i.e., fast, medium and slow plus BG; (b) the relative contribution of the three components are plotted against stimulation time; decay curves and growth curves of K-feldspar pIRIR150 (c) and pIRIR225 (d) signals for sample NL-579.
(a) The normalized OSL decay curve of sample NL-579 was decomposed into three components, i.e., fast, medium and slow plus BG; (b) the relative contribution of the three components are plotted against stimulation time; decay curves and growth curves of K-feldspar pIRIR150 (c) and pIRIR225 (d) signals for sample NL-579.

Fig. 6

De distribution of quartz OSL for three samples.
De distribution of quartz OSL for three samples.

Fig. 7

(a) Dose recovery tests and (b) residual test on K-feldspar pIRIR150 (black) and pIRIR225 (red) signals; (c) fading rates of K-feldspar pIRIR150 (black) and pIRIR225 (red) signals; (d) fading rates of IRSL50 signals measured by pIRIR150 (black) and pIRIR225 protocols.
(a) Dose recovery tests and (b) residual test on K-feldspar pIRIR150 (black) and pIRIR225 (red) signals; (c) fading rates of K-feldspar pIRIR150 (black) and pIRIR225 (red) signals; (d) fading rates of IRSL50 signals measured by pIRIR150 (black) and pIRIR225 protocols.

Fig. 8

All luminescence and 14C ages demonstrated together with the lithological log of JC section.
All luminescence and 14C ages demonstrated together with the lithological log of JC section.

Luminescence dating results for three samples_

Sample ID Depth (m) U (ppm) Th (ppm) K (%) Luminescence signals Total dose rate (Gy/ka) De (Gy) Age (ka)
NL-579 3.2 2.88 ± 0.11 4.30 ± 0.16 2.13 ± 0.06 Qz OSL 2.82 ± 0.20 22.1 ± 1.0 7.8 ± 0.7
K-feldspar pIRIR150 3.63 ± 0.22 28.7 ± 0.7 7.9 ± 0.5
K-feldspar pIRIR225 3.63 ± 0.22 26.9 ± 0.4 7.4 ± 0.5
NL-580 1.7 2.13 ± 0.09 4.21 ± 0.16 1.87 ± 0.06 Qz OSL 2.48 ± 0.17 18.4 ± 0.6 7.4 ± 0.6
K-feldspar pIRIR150 3.26 ± 0.21 24.4 ± 0.1 7.5 ± 0.5
K-feldspar pIRIR225 3.26 ± 0.21 24.4 ± 0.6 7.5 ± 0.5
NL-581 1.0 3.52 ± 0.12 8.02 ± 0.25 1.76 ± 0.06 Qz OSL 2.91 ± 0.19 22.2 ± 0.7 7.6 ± 0.6
K-feldspar pIRIR150 3.76 ± 0.23 28.7 ± 0.3 7.6 ± 0.5
K-feldspar pIRIR225 3.76 ± 0.23 27.9 ± 0.3 7.4 ± 0.5

14C dating results of three samples_

Sample ID Lab ID Dating material 14C ages Calibrated ages (Cal a BP) (one Sigma)
JC-1 NZA57145 Shells 6868±26 7668–7764
JC-2 NZA47526 Shells 7426±139 8156–8383
JC-3 NZA57104 Charcoals 7189±29 7971–8013
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