Holocene OSL Chronology of Flu-Lacustrine Sediments in Yangtze River Basin, Wuhan Area, China

Chuanyi Wei; Huasong Zhang; Chang’an Li; Yufen Zhang; Yawei Li; Mingming Jia; Guoqing Li; Yonghui Leng

doi:10.2478/geochr-2020-0012

Figures & Tables

Location of core HH-2017. a) and b) Wuhan area located in middle Yangtze River Basin is dominated by East Asian monsoon; c) map showing hundreds of lakes and rivers developed in Wuhan area; core HH-2017 was drilled in left bank of Yangtze River.

Drilling information and profile sketches locating the stratigraphic sampling location for the OSL dating. Before 4.25 m, it is artificial backfill layer while it is gravel layer after 38.55 m; thus, 20 samples totally were collected for OSL dating from 4.25 to 38.55 m.

Luminescence characteristics of sample HH-2017-12 under different preheat temperature. a) preheat plateau tests; b) dose recovery test; c) recycling ratio; and d) thermo transfer ratio.

Growth and decay curves of sample HH-2017-10 and HH-2017-23.

Plot of OSL ages against the depth of core HH-2017.

Sample number and its sampling depth as well as environmental radioactivity and OSL dating results of HH-2017_

Sample ID	Depth (m)	Dating grain size (μm)	K (%)	Th (ppm)	U (ppm)	Water content (%)	No. of aliquots	Dose rate (Gy/ka)	Final D_e (Gy)	OSL age (ka)
HH-2017-01	4.25	4 ∼ 11	2.52 ± 0.07	15.70 ± 0.42	2.94 ± 0.11	29 ± 5	11^b	3.1 ± 0.2	2.6 ± 0.3	0.8 ± 0.1
HH-2017-02	5.17	4 ∼ 11	2.71 ± 0.08	15.00 ± 0.40	2.66 ± 0.10	27 ± 5	12^b	3.3 ± 0.2	1.1 ± 0.1	0.4 ± 0.0
HH-2017-03	6.25	4 ∼ 11	2.45 ± 0.07	13.60 ± 0.38	3.32 ± 0.13	30 ± 5	12^b	3.0 ± 0.2	2.5 ± 0.1	0.8 ± 0.1
HH-2017-04	7.25	4 ∼ 11	2.59 ± 0.08	15.60 ± 0.42	2.89 ± 0.11	35 ± 5	12^b	2.8 ± 0.2	2.7 ± 0.0	1.0 ± 0.1
HH-2017-05	8.28	4 ∼ 11	2.23 ± 0.07	14.20 ± 0.38	2.40 ± 0.10	27 ± 5	12^b	2.8 ± 0.2	2.2 ± 0.1	0.8 ± 0.1
HH-2017-06	10.05	38 ∼ 63	1.75 ± 0.06	13.80 ± 0.39	2.38 ± 0.10	35 ± 5	6^a+11^b	2.0 ± 0.1	8.0 ± 0.2	3.9 ± 0.2
HH-2017-07	12.56	38 ∼ 63	2.03 ± 0.06	11.40 ± 0.32	2.15 ± 0.09	26 ± 5	6^a+12^b	2.4 ± 0.2	12.6 ± 0.2	5.2 ± 0.4
HH-2017-08	13.59	38 ∼ 63	1.88 ± 0.06	12.30 ± 0.34	2.13 ± 0.09	26 ± 5	6^a+12^b	2. 4 ± 0.2	12.0 ± 0.3	5.1 ± 0.4
HH-2017-09	14.24	38 ∼ 63	2.07 ± 0.06	14.60 ± 0.39	2.40 ± 0.09	28 ± 5	6^a+12^b	2. 6 ± 0.2	12.5 ± 0.2	4.9 ± 0.4
HH-2017-10	15.41	90 ∼ 125	1.92 ± 0.06	10.70 ± 0.31	2.11 ± 0.09	30 ± 5	6^a+12^b	2.2 ± 0.2	14.0 ± 0.5	6.6 ± 0.5
HH-2017-11	16.53	90 ∼ 125	1.65 ± 0.05	8.50 ± 0.26	1.45 ± 0.07	24 ± 5	6^a+12^b	1.9 ± 0.1	12.1 ± 0.3	6.3 ± 0.5
HH-2017-12	17.70	90 ∼ 125	1.64 ± 0.05	7.90 ± 0.25	1.88 ± 0.08	25 ± 5	6^a+12^b	1.9 ± 0.1	11.5 ± 0.2	6.0 ± 0.4
HH-2017-13	18.90	90 ∼ 125	1.44 ± 0.05	12.90 ± 0.36	1.97 ± 0.09	22 ± 5	5^a+12^b	2.2 ± 0.2	15.3 ± 0.5	7.1 ± 0.5
HH-2017-15	22.34	90 ∼ 125	1.50 ± 0.05	10.00 ± 0.29	1.47 ± 0.07	21 ± 5	5^a+12^b	2.0 ± 0.1	11.9 ± 0.4	6.1 ± 0.5
HH-2017-17	24.74	90 ∼ 125	1.61 ± 0.05	11.00 ± 0.31	1.52 ± 0.07	24 ± 5	6^a+11^b	2.0 ± 0.1	13.9 ± 0.8	6.9 ± 0.6
HH-2017-19	27.01	90 ∼ 125	2.11 ± 0.06	6.84 ± 0.23	1.12 ± 0.06	27 ± 5	6^a+12^b	2.0 ± 0.2	16.0 ± 0.6	8.0 ± 0.7
HH-2017-21	34.11	90 ∼ 125	1.69 ± 0.06	6.53 ± 0.22	1.11 ± 0.06	17 ± 5	6^a+12^b	2.0 ± 0.2	16.1 ± 0.8	8.2 ± 0.7
HH-2017-22	35.26	90 ∼ 125	2.00 ± 0.06	13.50 ± 0.38	3.04 ± 0.12	21 ± 5	6^a+12^b	2. 9 ± 0.2	28.0 ± 1.0	10.0 ± 0.8
HH-2017-23	35.95	90 ∼ 125	1.90 ± 0.06	12.50 ± 0.35	2.17 ± 0.09	22 ± 5	6^a+12^b	2.6 ± 0.2	22.5 ± 0.6	8.9 ± 0.7
HH-2017-25	38.55	90 ∼ 125	2.25 ± 0.06	7.74 ± 0.25	1.40 ± 0.07	10 ± 5	6^a+6^b	2.8 ± 0.2	21.8 ± 0.9	7.9 ± 0.7

Holocene OSL Chronology of Flu-Lacustrine Sediments in Yangtze River Basin, Wuhan Area, China

Figures & Tables

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Sample number and its sampling depth as well as environmental radioactivity and OSL dating results of HH-2017_

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