PROGRESS IN GEOGRAPHY

Luminescence dating of glaciofluvial deposits using single-grain K-feldspar in the Urumqi River headwaters of the Tianshan Mountains

LI Hongyu, YAO Pan, OU Xianjiao, XU Yantian, YANG Kunmei, LIU Jingfeng

PROGRESS IN GEOGRAPHY, 2025, 44(10): 2203-2214. DOI: 10.18306/dlkxjz.2025.10.015

样品编号	激发温度/℃	方法	D_e/Gy	OD/%	未校正年龄/ka	校正年龄/ka	最终年龄/ka
DX612	IR₁₁₀	30%MAM	81.0±8.3	42±3	20.6±2.3	24.1±2.9	20.6±2.3
	IR₁₁₀	nMAD	69.0±7.0	29±1	17.6±1.9	20.5±2.5	20.5±2.5
	pIRIR₁₇₀	MAM	89.8±9.2	31±2	21.7±2.4		21.7±2.4
	pIRIR₁₇₀	nMAD	86.0±8.7	19±1	21.9±2.4		21.9±2.4
DX613	IR₁₁₀	30%MAM	86.7±8.9	61±4	21.1±2.4	25.3±3.1	21.1±2.4
	IR₁₁₀	nMAD	74.7±7.6	36±2	18.4±2.0	22.1±2.7	22.1±2.7
	pIRIR₁₇₀	MAM	97.2±10.2	40±2	21.1±2.4		21.1±2.4
	pIRIR₁₇₀	nMAD	89.9±9.1	20±1	22.1±2.4		22.1±2.4

Tab.3 Summary of sample luminescence dating results

Other figure/table from this article

Fig.1 Location of the Daxi Valley (a) and DX612 and DX613 profiles (b)
Tab.1 Testing procedure
Fig.2 Quartz sum from individual single grain discs (synthetic small aliquots)
Fig.3 Decay curve and dose-response curve of representative grains from samples DX612 and DX613
Tab.2 Sample information
Fig.4 Anomalous fading of K-feldspar
Fig.5 Frequency distribution of equivalent dose (D_e) values
Fig.6 D_e as a function of signal brightness for samples DX612 and DX613
Fig.7 Frequency distribution of D_e for DX612 and DX613 after nMAD screening