Depth (cm)

Lab. number

¹³C/¹²C

(‰)

Conventional

¹⁴C age BP

Calendar age cal yr BP

(median probability)^†

Calendar age range

(cal yr BP)^§

Elevation a.m.s.l.(m)^#

15

Beta 295198

−17.9

4770 ± 30

5467

5590 to 5460

500

45

Beta 295199

−21.4

6500 ± 30

7417

7440 to 7410 7350 to 7340

500

80

Beta 295200

−19.5

8650 ± 40

9542

9690 to 9540

500

BP = before present, AD 1950; cal = calibrated.

^†Calibrated ages are calculated from SHCAL04 [63]

^§Calibrated ages are calculated from INTCAL 04 [64] [65] , which assumes a two-sigma error on radiocarbon measurements with an error multiplier of 1.0.

^#a.m.s.l. = actual altitude above mean sea level