Have a personal or library account? Click to login
Timing of Holocene Lake Highstand in Jinchang Paleolake from the Northeast Tibetan Plateau Foreland Cover

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

Open Access
|Dec 2021

Figures & Tables

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).

Fig. 2

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).

Fig. 4

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.

Fig. 6

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.

Fig. 8

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

Luminescence dating results for three samples_

Sample IDDepth (m)U (ppm)Th (ppm)K (%)Luminescence signalsTotal dose rate (Gy/ka)De (Gy)Age (ka)
NL-5793.22.88 ± 0.114.30 ± 0.162.13 ± 0.06Qz OSL2.82 ± 0.2022.1 ± 1.07.8 ± 0.7
K-feldspar pIRIR1503.63 ± 0.2228.7 ± 0.77.9 ± 0.5
K-feldspar pIRIR2253.63 ± 0.2226.9 ± 0.47.4 ± 0.5

NL-5801.72.13 ± 0.094.21 ± 0.161.87 ± 0.06Qz OSL2.48 ± 0.1718.4 ± 0.67.4 ± 0.6
K-feldspar pIRIR1503.26 ± 0.2124.4 ± 0.17.5 ± 0.5
K-feldspar pIRIR2253.26 ± 0.2124.4 ± 0.67.5 ± 0.5

NL-5811.03.52 ± 0.128.02 ± 0.251.76 ± 0.06Qz OSL2.91 ± 0.1922.2 ± 0.77.6 ± 0.6
K-feldspar pIRIR1503.76 ± 0.2328.7 ± 0.37.6 ± 0.5
K-feldspar pIRIR2253.76 ± 0.2327.9 ± 0.37.4 ± 0.5

14C dating results of three samples_

Sample IDLab IDDating material14C agesCalibrated ages (Cal a BP) (one Sigma)
JC-1NZA57145Shells6868±267668–7764
JC-2NZA47526Shells7426±1398156–8383
JC-3NZA57104Charcoals7189±297971–8013
Language: English
Page range: 253 - 262
Submitted on: Jan 20, 2019
|
Accepted on: Mar 11, 2020
|
Published on: Dec 31, 2021
Published by: Sciendo
In partnership with: Paradigm Publishing Services
Publication frequency: 1 issue per year

© 2021 Hao Long, Hongyi Cheng, Linhai Yang, Lei Gao, Qian Liu, published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.