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High-resolution OSL dating of a coastal sediment sequence from the South Yellow Sea Cover

High-resolution OSL dating of a coastal sediment sequence from the South Yellow Sea

Geochronometria
Volume 43 (2016): Issue 1 (February 2016)
By: Lei Gao,  Hao Long,  Ji Shen,  Ge Yu and  Yong Yin  
Open Access
|Dec 2016

Figures & Tables

Map of the study area and its surrounding environment, (b) location of core YZ07. The DEM data in Fig. 1a were downloaded from http://srtm.csi.cgiar.org/. The base map in Fig. 1b was obtained from a Landsat TM 8 image http://glovis.usgs.gov/.
Lithological profile of the upper part of core YZ07, including sample ID, sampling depth, lithology and sedimentary facies.
(a) Preheat plateau tests at a temperature range of 160–300°C at intervals of 20°C; (b) dose recovery tests at a temperature range of 160–300°C at intervals of 20°C; (c) histograms of recovered ratios conducted on 14 samples under fixed experimental conditions; (d) recovered tests measured under fixed experimental conditions from a series of irradiated doses on bleached aliquots.
(a) Natural OSL decay curve and its growth curve (inset) fitted with single saturation exponential function for a representative young sample NL-589; (b) natural OSL decay curve and its growth curve (inset) fitted with single saturation exponential function for a representative old sample NL-632.
De distributions and relevant statistical characteristics of two representative samples (a–d). Radial plot shows CAM De values (in red) and the De scatter for samples NL-588 (a) and NL-612 (c), respectively. Kernel density estimation (KDE) plot showing the shapes of De distributions for samples NL-588 (b) and NL-612 (d), respectively.
Summary of dose rate data, Des and OSL ages.
A) Age–depth relationship of core YZ07 in (a). The process of sea level change since the LGM in (b–d). B) Comparison with adjacent Nakdong delta chronological sequence.
Migration history of coastline and the evolution of the Yangtze River delta since the LGM, modified from the Delta Research Group (1978) and Li and Li (1983).

Results of statistical characteristics of the 28 samples

Sample IDDepth (m)nDe (Gy)OD (%)SkewnessKurtosis
meanmedianKDE. MaxCAM
NL-5886.4242.32.32.32.2 ± 0.114.3 ± 0.90.583.11
NL-5896.9241.91.91.91.9 ± 0.120.7 ± 1.40.222.81
NL-5907.8243.03.13.23.0 ± 0.119.0 ± 1.5–0.202.42
NL-5919.1242.72.62.72.6 ± 0.116.0 ± 1.10.763.35
NL-59311.7243.63.43.53.5 ± 0.225.4 ± 2.00.612.73
NL-59412.2233.43.13.13.3 ± 0.221.6 ± 1.72.358.21
NL-59513.1253.23.23.13.2 ± 0.117.5 ± 1.20.372.11
NL-59613.6272.62.12.12.4 ± 0.240.7 ± 3.82.237.50
NL-59714.7263.02.93.32.9 ± 0.229.7 ± 2.40.643.29
NL-59918.4213.23.32.73.3 ± 0.113.2 ± 0.9–0.193.81
NL-60322.1263.13.23.46.6 ± 0.325.3 ± 1.40.353.42
NL-60423.3305.45.65.85.2 ± 0.327.2 ± 1.9–0.182.39
NL-60625.0256.56.26.56.5 ± 0.318.4 ± 1.30.472.56
NL-60726.1375.65.45.95.5 ± 0.225.0 ± 1.50.552.48
NL-60826.2296.96.66.96.8 ± 0.215.0 ± 0.80.743.05
NL-60928.6246.66.16.86.3 ± 0.432.2 ± 2.90.663.82
NL-61028.9295.15.25.84.8 ± 0.332.3 ± 2.70.202.28
NL-61129.6205.24.55.14.9 ± 0.330.8 ± 2.80.882.51
NL-61230.3327.57.57.37.3 ± 0.324.9 ± 1.61.164.36
NL-61432.2249.06.59.07.8 ± 0.746.4 ± 4.62.679.61
NL-61634.52410.79.29.79.3 ± 0.945.4 ± 4.53.4815.61
NL-61836. 6279.59.210.19.1 ± 0.529.9 ± 2.30.913.58
NL-61937.5327.36.77.87.1 ± 0.324.0 ± 1.51.604.96
NL-62038.5248.98.29.38.6 ± 0.526.9 ± 2.11.454.59
NL-62241.32215.912.014.813.8 ± 1.550.7 ± 5.51.715.13
NL-62644.42313.210.314.411.8 ± 1.144.0 ± 4.31.504.81
NL-62846.52515.313.916.013.3 ± 1.452.9 ± 5.51.012.99
NL-63250.32856.253.374.851.3 ± 3.043.8 ± 2.70.372.18

CG quartz OSL dating results of the 28 samples_

Sample IDDepth (m)U (ppm)Th (ppm)K (%)Water content (%)Total dose rate (Gy/ka)Mean age (ka)CAM age (ka)
NL-5886.41.84 ± 0.088.71 ± 0.261.50 ± 0.0520.3 ± 102.0 ± 0.21.2 ± 0.11.1 ± 0.1
NL-5896.92.12 ± 0.0810.40 ± 0.291.44 ± 0.0520.5 ± 102.0 ± 0.20.9 ± 0.10.9 ± 0.1
NL-5907.81.85 ± 0.089.38 ± 0.271.61 ± 0.0522.9 ± 102.0 ± 0.21.5 ± 0.21.5 ± 0.2
NL-5919.11.98 ± 0.0810.10 ± 0.281.74 ± 0.0524.6 ± 102.1 ± 0.21.3 ± 0.21.3 ± 0.2
NL-59311.72.08 ± 0.0812.20 ± 0.342.06 ± 0.0629.0 ± 102.3 ± 0.31.6 ± 0.21.5 ± 0.2
NL-59412.22.06 ± 0.0811.1 ± 0.311.69 ± 0.0523.7 ± 102.1 ± 0.31.6 ± 0.21.5 ± 0.2
NL-59513.12.27 ± 0.0913.01 ± 0.342.04 ± 0.0626.1 ± 102.4 ± 0.31.3 ± 0.21.3 ± 0.2
NL-59613.62.46 ± 0.0914.80 ± 0.392.31 ± 0.0630.5 ± 102.5 ± 0.31.0 ± 0.20.9 ± 0.1
NL-59714.71.91 ± 0.0810.01 ± 0.271.74 ± 0.0520.7 ± 102.2 ± 0.31.4 ± 0.21.3 ± 0.2
NL-59918.41.61 ± 0.078.92 ± 0.261.53 ± 0.0519.7 ± 101.9 ± 0.21.7 ± 0.21.7 ± 0.2
NL-60322.11.96 ± 0.089.36 ± 0.271.82 ± 0.0521.2 ± 102.2 ± 0.33.3 ± 0.53.1 ± 0.4
NL-60423.31.73 ± 0.078.68 ± 0.261.74 ± 0.0520.7 ± 102.1 ± 0.32.6 ± 0.32.5 ± 0.3
NL-60625.01.54 ± 0.078.01 ± 0.241.72 ± 0.0519.4 ± 102.0 ± 0.23.3 ± 0.43.2 ± 0.4
NL-60726.12.80 ± 0.1013.40 ± 0.361.5 ± 0.0518.8 ± 102.4 ± 0.32.5 ± 0.32.3 ± 0.3
NL-60826.21.86 ± 0.0810.60 ± 0.291.6 ± 0.0520.0 ± 102.1 ± 0.33.3 ± 0.43.3 ± 0.4
NL-60928.61.47 ± 0.077.74 ± 0.241.74 ± 0.0518.8 ± 102.0 ± 0.23.3 ± 0.53.1 ± 0.4
NL-61028.91.27 ± 0.066.61 ± 0.211.82 ± 0.0514.7 ± 102.1 ± 0.32.4 ± 0.32.3 ± 0.3
NL-61129.61.19 ± 0.066.38 ± 0.211.68 ± 0.0519.9 ± 101.8 ± 0.22.8 ± 0.42.7 ± 0.4
NL-61230.31.71 ± 0.079.30 ± 0.261.87 ± 0.0525.1 ± 102.0 ± 0.23.7 ± 0.53.6 ± 0.5
NL-61432.21.87 ± 0.089.02 ± 0.271.66 ± 0.0522.3 ± 102.0 ± 0.24.6 ± 0.93.9 ± 0.6
NL-61634.52.09 ± 0.088.32 ± 0.251.71 ± 0.0518.0 ± 102.1 ± 0.35.0 ± 1.14.3 ± 0.7
NL-61836.61.50 ± 0.078.05 ± 0.241.72 ± 0.0517.4 ± 102.1 ± 0.34.6 ± 0.64.4 ± 0.6
NL-61937.52.15 ± 0.088.71 ± 0.261.73 ± 0.0520.7 ± 102.1 ± 0.33.5 ± 0.53.4 ± 0.4
NL-62037.52.30 ± 0.0911.90 ± 0.331.89 ± 0.0521.1 ± 102.4 ± 0.33.7 ± 0.53.6 ± 0.5
NL-62241.32.23 ± 0.0811.50 ± 0.321.88 ± 0.0523.3 ± 102.3 ± 0.37.0 ± 1.36.1 ± 1.0
NL-62644.41.70 ± 0.078.50 ± 0.261.87 ± 0.0520.8 ± 102.1 ± 0.36.2 ± 1.06.0 ± 1.0
NL-62846.52.22 ± 0.0811.20 ± 0.311.71 ± 0.0518.3 ± 102.3 ± 0.36.6 ± 1.16.0 ± 1.0
NL-63250.31.76 ± 0.089.80 ± 0.281.83 ± 0.0521.5 ± 102.1 ± 0.326.2 ± 3.523.9 ± 3.2
DOI: https://doi.org/10.1515/geochr-2015-0044 | Journal eISSN: 1897-1695
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Language: English
Page range: 143 - 154
Submitted on: Jan 30, 2016
|
Accepted on: Oct 27, 2016
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Published on: Dec 30, 2016
Published by: Sciendo
In partnership with: Paradigm Publishing Services
Publication frequency: 1 issue per year
Keywords:
OSL dating,
coastal sediment sequence,
South Yellow Sea,
Yangtze River delta,
sea level change,
LGM
Related subjects:
Geosciences,
Geosciences, other

© 2016 Lei Gao, Hao Long, Ji Shen, Ge Yu, Yong Yin, published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

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