Table 1 Statistics of OSL and ESR dating results.

From: Quaternary stratigraphy of Bayan borehole in eastern Songnen Plain and its paleoclimate significance

Number

Sample depth/m

U/×10−6

Th/×10−6

K/%

Water content/%

Equivalent Dose/De

Age/ka

SHOSL-01

1.6

1.91

8.02

1.72

24.70

29.00

10.5±1.0

SHOSL-02

5.1

2.38

10.79

1.88

20.67

71.37

21.5±0.3

SHOSL-03

10.9

1.39

7.41

1.75

14.73

92.03

33.5±7.9

SHOSL-04

17.7

2.23

9.50

1.88

16.01

132.42

40.8±2.1

Number

Sample depth/m

U/×10−6

Th/×10−6

K/%

Water content/%

Dose

rate/(Gy/ka)

Total Dose(Gy)

Age/ka

SHESR-01

38.0

7.49

13.75

2.91

7.71

5.64

1439.53

255.15

SHESR-02

50.7

4.50

14.64

2.40

21.19

3.91

1646.28

420.91