Multiple advances of Alpine glaciers into the Jura Mountains in the Northwestern Switzerland

Graf, Angela; Akçar, Naki; Ivy-Ochs, Susan; Strasky, Stefan; Kubik, Peter W.; Christl, Marcus; Burkhard, Martin; Wieler, Rainer; Schlüchter, Christian

doi:10.1007/s00015-015-0195-y

Swiss Journal of Geosciences

Table 2 ¹⁰Be data of the samples from the Jura Mountains

From: Multiple advances of Alpine glaciers into the Jura Mountains in the Northwestern Switzerland

Sample name	Quartz dissolved (g)	⁹Be spike (mg)	¹⁰Be/⁹Be (10⁻¹³)	Blank correction (%)	¹⁰Be concentration (× 10⁴ at/g)	¹⁰Be exposure age (ka)
Eastern transect
MO-04-01^a	38.5364	0.4033	19.34 ± 0.58	1.2	121.87 ± 3.70	129.7 ± 4.7 (8.6)
MO-04-02^a	21.7053	0.4025	8.88 ± 0.89	2.7	97.70 ± 10.04	95.0 ± 11.1 (12.0)
MO-04-03^a	43.1377	0.4034	11.82 ± 0.73	2.0	66.04 ± 4.18	76.4 ± 5.4 (6.6)
MO-04-04^a	65.6744	0.4082	29.74 ± 1.40	0.8	111.81 ± 5.3	143.2 ± 8.2 (11.4)
RH-2	77.5700	0.3541	4.86 ± 0.24	4.9	12.88 ± 0.66	15.9 ± 0.8 (1.1)
RH-3c	55.5600	0.3475	12.45 ± 0.81	1.9	46.57 ± 3.09	59.1 ± 4.2 (5.2)
Central transect
PAB-1	50.1869	0.3041	4.24 ± 0.23	5.6	14.78 ± 0.86	21.4 ± 1.3 (1.7)
PAB-2	50.9088	0.3051	4.43 ± 0.22	5.3	15.33 ± 0.81	22.4 ± 1.2 (1.6)
PAB-3^b	101.8748	0.3046	18.33 ± 0.64	1.3	32.99 ± 1.17
VDR-1	50.1053	0.3054	7.22 ± 0.55	3.3	25.97 ± 2.04	31.8 ± 2.6 (3.0)
VDR-2	50.0268	0.3041	4.75 ± 0.31	5.0	16.72 ± 1.16	20.2 ± 1.4 (1.8)
VDR-3	49.7426	0.3050	9.83 ± 0.43	2.4	35.88 ± 1.62	43.6 ± 2.1 (3.0)
VDR-4	50.6849	0.3127	6.24 ± 0.42	3.8	22.58 ± 1.57	26.7 ± 1.9 (2.3)
MDA-1	50.6598	0.3069	42.51 ± 1.28	0.6	156.12 ± 4.71	144.0 ± 5.3 (9.6)
GRI-1	50.1271	0.3023	5.96 ± 0.32	4.0	21.03 ± 1.18	22.6 ± 1.3 (1.7)
COR-1	46.8240	0.3060	12.48 ± 0.51	1.9	48.79 ± 2.04	50.0 ± 2.3 (3.4)
Western transect
PBOL-1	49.6464	0.3083	5.77 ± 0.33	4.1	20.96 ± 1.27	21.0 ± 1.3 (1.7)
CREB-1	47.3671	0.3101	5.68 ± 0.28	4.2	21.72 ± 1.11	20.1 ± 1.1 (1.4)
CREB-2	51.9935	0.3049	4.95 ± 0.35	4.8	16.86 ± 1.26	15.5 ± 1.2 (1.4)
CREB-3	50.5764	0.2892	5.88 ± 0.34	4.0	19.67 ± 1.19	17.7 ± 1.1 (1.4)
PEB-1	50.8349	0.3071	10.16 ± 0.50	2.3	36.56 ± 1.83	34.8 ± 1.9 (2.5)
GJ-1	50.5889	0.3061	5.45 ± 0.32	4.3	19.22 ± 1.17	19.9 ± 1.2 (1.6)
GJ-2	41.9368	0.3071	8.19 ± 0.59	2.9	35.52 ± 2.63	39.0 ± 3.1 (3.6)

AMS measurement errors are at 1 σ level, including the statistical (counting) error and the error due to normalization of standards and blanks. The error weighted average ¹⁰Be/⁹Be full process blank ratio is (2.36 ± 0.10) × 10⁻¹⁴. Exposure ages are calculated with the CRONUS-Earth exposure age calculator (http://hess.ess.washington.edu/math/; v. 2.2; Balco et al. 2008 and update from v. 2.1 to v. 2.2 published by Balco in October Balco et al. 2009) and time dependent Lal (1991)/Stone (2000) scaling model using the NE North American production rate calibration dataset (Balco et al. 2009). Exposure ages are corrected for dip of rock surface, shielding of surrounding topography, and sample thickness, as explained in the text; the uncertainties reported in parentheses also include the production rate error. 2.65 g/cm³ for rock density and a half-live of 1.39 Ma for ¹⁰Be (Korschinek et al. 2010; Chmeleff et al. 2010) are used for the age calculations
^aReported concentrations are from Graf et al. (2007) and exposure ages are recalculated
^bSample from the bottom of the boulder

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