Establishing a common standardised growth curve for single-aliquot OSL dating of quartz from sediments in the Jilantai area of North China

Zhenjun Li; Xuesong Mou; Yuxin Fan; Qingsong Zhang; Guangliang Yang; Hui Zhao

doi:10.2478/geochr-2020-0017

Figures & Tables

Regional setting (a) and sampling sites (b) (modified from Chen et al., 2008). The inset in the left upper corner of (a) is a remote sensing image of East Asia showing the location of the study area (marked by square) and the modern monsoon limit.

(a) Relative standard deviation (RSD) of the sensitivity-corrected natural signal (Ln/Tn) and re-normalised regenerative-dose signals (Lx/Tx) of representative sample LS-4 (the diamond symbol), plotted versus the regenerative doses. (b) Plots of the sensitivity-corrected natural signal (Ln/Tn) and regenerative dose signal (Lx/Tx) (filled black diamonds) (left-hand axis) versus the regenerative dose, and plots of the re-normalised signals with the extra regenerative dose of 220 Gy (red circles) which are plotted using an offset of a few Gy offset to the right on the x-axis for clarity (right-hand axis).

Comparison of the re-normalisation results with OSL signals of the re-normalisation dose of (a) 88 Gy, (b) 147 Gy and (c) 220 Gy.

Comparison of re-normalised OSL signals (b, c and d) with the sensitivity-corrected OSL signals (a) from samples from the LS profile. Illustration of the potential SGCs established using (b) SAR-SGC, (c) Re-SGC and (d) LS-SGC methods. The diamonds represent the OSL signals of different samples, and the red curve represents the fitted SGC. In (b), the potential SGCs of different profiles are shown using the same colour as in the legend in Fig. 4-4b.

(a) The regional SGC (red curve) and DRCs from samples of profiles (the other coloured curves) established using the Re-SGC method. (b) The regional SGC (red curve) and DRCs of profiles (the other coloured curves) established using the LS-SGC method. (c) Ratios between the re-normalised data and the Re-SGC in (a), plotted against regenerative dose. (d) Ratios between the LS-normalised data and the LS-SGC in (b), plotted against regenerative dose. (e) Radial plot of the ratios shown in (c). (f) Radial plot of the ratios shown in (d). In the plots (e) and (f), the relatively high precision of 5–6 points, which scatter from the rest of the data points, was caused by OSL signal saturation.

Comparison of De values obtained using the SAR protocol with those obtained using the Re-SGC (a) and LS-SGC (b) methods. The dashed black line is the 1:1 line, the solid blue lines define the 10% error range, and the solid pink lines define the 20% error range. (c) Radial plot showing ratios of the Re-SGC De values to the SAR De. (d) Radial plot showing the ratios of the LS-SGC De values to the SAR De. In the plot (d), 10 points with very low ratio were caused by OSL signal saturation.

Comparison of De values obtained using the SAR protocol with those obtained using the regional SGCs established using the Re-SGC (a and c) and LS-SGC (b and d) methods, for samples which were not used in the establishment of the regional SGCs. In these plots, the black dashed lines are the 1:1 ratio, and the areas enclosed by the blue solid lines are the 10% error range of unity, and the areas enclosed by the pink solid lines are the 20% error range of unity. (e) Radial plot showing the ratios of the Re-SGC De values to the SAR De. (f) Radial plot showing the ratios of the LS-SGC De values to the SAR De. Within (e) and (f), the data within 200 Gy are shown as open triangles and those <50 Gy as filled circles.

Lake shoreline profiles of the Jilantai Salt Lake.

Results of a dose recovery test for a representative sample S63-2.

Comparison of SGCs for core DK12 established using three methods.

Comparison of SGCs for profile S32 established using three methods.

Comparison of SGCs for profile S40 established using three methods.

Comparison of SGCs for profile S42 established using three methods.

Comparison of SGCs for profile S63 profile established using three methods.

Comparison of SGCs for profile WP130725 established using three methods.

Comparison of SGCs for profile WP130726-2 established using three methods.

Comparison of SGCs for profile WP130726-3 established using three methods.

Comparison of SGCs for profile WP130729 established using three methods.

A summary of studied samples, including their locations, sedimentary types and grain size and measurement conditions in measuring OSL signals of quartz in this study_

Profile/Core	Sample	Location	Sediment type	Grain size (μm)	Preheat/cut-heat (°C)	Test dose (s)	Number of aliquots	Data source
	DK-1		Lacustrine	180-250	200/160	100	10
	DK-2		Lacustrine	180-250	160/160	100	11
	DK-3		Lacustrine	180-250	180/160	100	12
	DK-4	N40°23′14.3″,	Lacustrine	180-250	200/160	100	11
DK12	DK-5	E106°40′12.0″	Lacustrine	180-250	220/160	100	12	(Fan et al., 2017)
	DK-6		Lacustrine	180-250	180/160	100	12
	DK-7		Lacustrine	180-250	260/160	100	11
	DK-1#		Lacustrine	180-250	200/160	50	7
	DK-2#		Lacustrine	180-250	160/160	100	6
	LS-1		Lacustrine	90-125	160/160	30	8
	LS-2		Lacustrine	90-125	180/160	30	5
	LS-3		Lacustrine	90-125	200/160	30	12
	LS-4	N40°26′22.88″,	Lacustrine	90-125	260/160	30	11
LS	LS-1#	E106°11′36.26″	Lacustrine	90-125	160/160	30	12	(Zhang 2016)
	LS-2#		Lacustrine	90-125	180/160	30	10
	LS-3#		Lacustrine	90-125	200/160	30	10
	LS-4#		Lacustrine	90-125	260/160	30	11
S32	S32-1 S32-2	N39°44′01.0″, E105°33′22.0″	Lacustrine Lacustrine	90-125 90-125	160/160 260/160	30 30	8 10	(Zhang 2016)
	S40-1		Lacustrine	90-125	200/160	50	16
S40	S40-2	N39°56′55.10″, E105°38′07.50 ″	Lacustrine	90-125	180/160	50	11	(Zhang 2015)
	S40-3		Lacustrine	90-125	260/160	50	10
	S42-1		Lacustrine	90-125	180/160	50	9
S42	S42-2	N39°56′54.58″,	Lacustrine	90-125	240/160	50	8	(Zhang 2015)
		E105°37′5.51″
	S42-3		Lacustrine	90-125	180/160	50	12
	S63-1		Lacustrine	90-125	200/160	50	10
S63	S63-2 S63-3	N39°30′15.7″, E105°36′32.2″	Lacustrine Lacustrine	90-125 90-125	220/160 160/160	50 50	4 8	This work
	S63-2#		Lacustrine	90-125	220/160	50	11
WP130725	WP130725-1 WP130725-2	N39°10′56.64″, E105°39′38.92″	Fluvial Fluvial	90-125 90-125	160/160 160/160	50 50	14 6	(Zhang 2015)
	WP130726-2-1		Fluvial	90-125	180/160	50	11
WP130726-2	WP130726-2-2	N39°27′57.68″, E105°38′17.24 ″	Fluvial	90-125	160/160	50	11	This work
	WP130726-2-3		Fluvial	90-125	220/160	50	11
WP130726-3	WP130726-3-1 WP130726-3-2	N39°27′3.79″, E105°39′5.79″	Fluvial Fluvial	90-125 90-125	240/160 220/160	50 50	9 12	This work
	WP130729-1	N39°20′50.5″,	Fluvial	90-125	240/160	50	16
WP130729	WP130729-2	E105°41′52.7″	Fluvial	90-125	180/160	50	12	(Zhang 2015)
S39	S39-1	N39°58′32″,	Lacustrine	106-180	260/220	80	15	(Fan 2008)
	S39-2	E105°37′07″	Lacustrine	150-180	260/220	80	12
		N39°34′14″,
S27	S27-1	E105°35′37″	Lacustrine	90-125	260/160	100	6	(Fan 2008)
		N39°52′14″,
S22	S22-1	E105°39′45″	Lacustrine	90-125	260/160	50	13	(Fan 2008)
		N39°47′53″,
S18	S18-1	E105°39′58″	Lacustrine	90-125	260/220	50	22	(Fan 2008)
	S21-1		Lacustrine	180-300	260/160	50	15
S21	S21-2	N39°47′01″, E105°39′24 ″	Lacustrine	90-125	260/160	20	16	(Fan 2008)
	S21-3		Lacustrine	300-500	260/160	80	11
		N39°46′45″,
S37	S37-1	E105°39′34″	Lacustrine	125-180	260/160	20	12	(Fan 2008)
	S16-1	N39°44′11″,	Lacustrine	90-125	260/160	50	6
S16	S16-2	E105°34′24″	Lacustrine	250-300	260/220	50	29	(Fan 2008)
S11	S11-1	N39°44′57″,	Lacustrine	180-300	260/160	20	16	(Fan 2008)
	S11-2	E105°38′40″	Lacustrine	90-125	260/220	20	28
S48	S48-1	N39°44′03″,	Lacustrine	250-300	260/160	20	18	(Fan 2008)
		E105°34′24″
S41	S41-1	N39°58′12″, E105°38′29 ″	Lacustrine	500-1000	260/220	50	7	(Fan 2008)
		N39°39′39″,
BS6	BS6-1	E105°40′54″	Dune	90-125	260/160	20	9	(Fan et al., 2010)
	S7-1		Dune	90-125	260/160	20	9
	S7-2	N39°39′53″,	Dune	125-150	260/220	80	13
S7	S7-3	E105°36′17″	Dune	125-150	260/220	50	6	(Fan et al., 2010)
	S7-4		Dune	250-300	260/160	20	8
		N39°46′03″,
WLD07A	WLD07A-1	E105°45′38″	Dune	125-180	260/220	50	5	(Fan et al., 2010)
		N39°51′41″,						et
WLD07B	WLD07B-1	E106°23′20″	Dune	125-180	260/220	50	19	(Fan al., 2010)
		N39°51′03″,						et
WLD07D	WLD07D-1	E105°49′54″	Dune	125-180	260/220	50	8	(Fan al., 2010)

W7	W7-1	N39°54′23″,E106°30′28″	Dune	90-125	260/160	20	7	(Fan et al., 2010)

The double SAR protocol applied in measuring OSL signals in this study_

Step	Operation	Measured
1	Regeneration dose di (i=0,1,2,3,4,5)	d0=0, d1=d4
2	Preheat @160–260°C for 10 s
3	OSL @50°C for 40 s	Lx
4	OSL @125°C for 40 s
5	Test dose 20–100 s
6	TL 160–220°C	Tx
7	OSL @50°C for 40 s
8	OSL @125°C for 40 s
9	Illumination @280°C for 100 s

Establishing a common standardised growth curve for single-aliquot OSL dating of quartz from sediments in the Jilantai area of North China

Figures & Tables

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A summary of studied samples, including their locations, sedimentary types and grain size and measurement conditions in measuring OSL signals of quartz in this study_

The double SAR protocol applied in measuring OSL signals in this study_

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