Input data for cosmogenic Be-10 calculations, Mt Rigby, Scott Glacier

The data below are formatted for input to the CRONUS online calculator. Age estimates based on the production rates used by the calculator in August 2011 are given in Table 2 below. The data in this table can be used to re-calculate exposure ages in future, if the Be-10 production rate is re-determined. Samples in both tables are listed by altitude, from summit to glacier level.

Table 1: CRONUS calculator input data for Mt Rigby erratics

Sample_name	Latitude	Longitude	Altitude	Elv/pressure	Thickness	Density	Shielding	Erosion_rate	[Be-10]	+/-	Be_std	[Al-26]	+/-	Al_std
	(DD)	(DD)	(m)	flag	(cm)	(g_cm^-3)	correction	(cm_yr^-1)	atom_g^-1	atom_g^-1		atom_g^-1	atom_g^-1
07-SCT-025-RGB	85.54078	154.63233	890.6	ant	8	2.7	0.9916	0	139249	2709.85	07KNSTD	0	0	KNSTD
07-SCT-026-RGB	85.54068	-154.62892	884.6	ant	7.5	2.7	0.9927	0	124199	2039.34	07KNSTD	0	0	KNSTD
07-SCT-022-RGB	85.5432	154.54297	844.6	ant	6.5	2.7	0.9923	0	97825.8	2267.22	07KNSTD	0	0	KNSTD
07-SCT-023-RGB	85.54352	-154.53953	837.5	ant	5.5	2.7	0.9986	0	99590.1	1907.18	07KNSTD	0	0	KNSTD
07-SCT-029-RGB	85.55113	154.56567	738.5	ant	8	2.7	0.9972	0	83822	1703	07KNSTD	0	0	KNSTD
07-SCT-041-RGB	85.53267	154.48502	735	ant	8	2.7	0.9986	0	81336	1555.53	07KNSTD	0	0	KNSTD
07-SCT-046-RGB	85.53148	154.48623	694.1	ant	5.5	2.7	0.997	0	79511.5	1557.89	07KNSTD	0	0	KNSTD
07-SCT-043-RGB	85.53037	154.48298	662.1	ant	8	2.7	0.9967	0	76274.3	1365.85	07KNSTD	0	0	KNSTD
07-SCT-005-RGB	85.5279	154.49227	588.5	ant	8	2.7	0.9984	0	65554.9	1688.43	07KNSTD	0	0	KNSTD
07-SCT-004-RGB	85.52773	154.49187	587	ant	6.5	2.7	0.9987	0	63442.3	1438.35	07KNSTD	0	0	KNSTD
07-SCT-007-RGB	85.52223	154.50417	514.7	ant	7	2.7	0.9973	0	50900.3	1141.99	07KNSTD	0	0	KNSTD
07-SCT-008-RGB	85.52025	154.51407	480.8	ant	6.5	2.7	0.9977	0	49401.6	967.393	07KNSTD	0	0	KNSTD
07-SCT-010-RGB	85.51873	154.51868	413.6	ant	8.5	2.7	0.9847	0	44791.7	991.447	07KNSTD	0	0	KNSTD
07-SCT-014-RGB	85.51758	154.54775	325.1	ant	7.5	2.7	0.9886	0	29631.7	880.242	07KNSTD	0	0	KNSTD
04-RDY-043-KRO	85.4968	154.52765	292	ant	5	2.7	0.999	0	39416.7	1007.5	KNSTD	0	0	KNSTD
04-RDY-044-KRO	85.4968	154.52782	292	ant	7.5	2.7	0.999	0	35338.3	1140.7	KNSTD	0	0	KNSTD
04-RDY-048-KRO	85.4987	154.60308	248	ant	6.5	2.7	0.993	0	31426.5	1299.6	KNSTD	0	0	KNSTD
04-RDY-047-KRO	85.49913	154.60328	247	ant	7	2.7	0.993	0	28645.9	1005.4	KNSTD	0	0	KNSTD
04-RDY-047-KRO-RPT	85.49913	154.60328	247	ant	7	2.7	0.993	0	29634	964.4	KNSTD	0	0	KNSTD
07-SCT-018-RGB	85.51457	-154.58687	225.2	ant	7	2.7	0.9975	0	21930.2	725.412	07KNSTD	0	0	KNSTD
07-SCT-109-KHL	85.4896	-154.4971	204.2	ant	8	2.7	0.9996	0	21364.3	584.741	07KNSTD	0	0	KNSTD
04-RDY-049-KRO	85.49955	154.6575	203	ant	7	2.7	0.996	0	24672.1	1065.2	KNSTD	0	0	KNSTD
04-RDY-050-KRO	85.49955	154.6575	203	ant	4.5	2.7	0.996	0	24385.3	911.4	KNSTD	0	0	KNSTD
07-SCT-033-KHL	85.50297	-154.3293	189.5	ant	7.5	2.7	0.999863	0	2415.13	304.719	07KNSTD	0	0	KNSTD
04-RDY-052-KRO-RPT	85.49973	154.67318	182	ant	6	2.7	0.999	0	22074.8	1166.7	KNSTD	0	0	KNSTD
07-SCT-035-KHL	85.50145	-154.37225	172.4	ant	9	2.7	0.999863	0	1763.21	219.874	07KNSTD	0	0	KNSTD
07-SCT-106-KHL	85.48613	154.48428	153.8	ant	5.5	2.7	0.9994	0	19685.8	639.734	07KNSTD	0	0	KNSTD
07-SCT-105-KHL	85.48628	154.45275	110.5	ant	9	2.7	0.9984	0	8109.49	452.194	07KNSTD	0	0	KNSTD
07-SCT-103-KHL	85.48492	154.44543	70	ant	4.5	2.7	0.9937	0	509.805	246.668	07KNSTD	0	0	KNSTD

Exposure ages of glacial erratics, Mt Rigby, Scott Glacier

Exposure ages below are calculated using the Be-10 production rates incorporated in the CRONUS calculator as of August 2011 (Calculator version 2.1; constants version 2.2.1; muon code 1.1). As calibration of the Be-10 production rate improves in future this is likely to change. At such time, the input data in Table 1 above should be used to re-calculate these ages.

Table 2: Exposure ages for glacial erratics, Mt Rigby

Sample_name	Altitude	P_Be-10	error	t_exp_Lal(1)	ext_error	int_error	t_Du(2)	ext_error	t_De(3)	ext_error	t_Li(4)	ext_error	t_LM(5)	ext_error
	(m)	(atom/g/yr)		(yr)			(yr)		(yr)		(yr)		(yr)

07-SCT-025-RGB	891	12.35	0.265	11068	988	216	11834	1418	11613	1386	11289	1137	11316	982
07-SCT-026-RGB	885	12.35	0.265	9870	875	162	10554	1260	10358	1231	10058	1008	10091	869
07-SCT-022-RGB	845	12.01	0.262	7986	719	185	8545	1029	8388	1006	8120	824	8165	715
07-SCT-023-RGB	838	12.11	0.262	8064	719	155	8630	1033	8472	1010	8201	825	8244	714
07-SCT-029-RGB	739	10.84	0.252	7574	677	154	8116	973	7970	951	7723	779	7743	673
07-SCT-041-RGB	735	10.81	0.251	7366	656	141	7893	945	7751	924	7510	755	7530	652
07-SCT-046-RGB	694	10.61	0.249	7333	654	144	7861	941	7721	921	7485	754	7496	650
07-SCT-043-RGB	662	10.09	0.245	7392	657	133	7927	947	7787	926	7551	758	7557	652
07-SCT-005-RGB	589	9.45	0.239	6781	615	175	7273	879	7147	860	6944	709	6931	612
07-SCT-004-RGB	587	9.55	0.239	6492	584	147	6964	838	6844	820	6651	674	6637	580
07-SCT-007-RGB	515	8.87	0.233	5599	503	126	6006	722	5904	707	5743	581	5723	500
07-SCT-008-RGB	481	8.63	0.23	5585	498	109	5991	717	5890	702	5732	577	5709	495
07-SCT-010-RGB	414	7.85	0.224	5555	499	123	5955	715	5856	701	5704	577	5678	495
07-SCT-014-RGB	325	7.28	0.217	3956	364	118	4235	515	4167	505	4047	417	4044	362
04-RDY-043-KRO	292	7.27	0.215	4769	432	122	5101	616	5019	604	4892	499	4874	430
04-RDY-044-KRO	292	7.12	0.215	4362	405	141	4666	571	4591	560	4470	464	4459	403
04-RDY-048-KRO	248	6.82	0.211	4043	389	167	4319	540	4251	530	4135	442	4132	388
04-RDY-047-KRO	247	6.79	0.211	3704	347	130	3956	487	3894	478	3780	396	3785	346
04-RDY-047-KRO-RPT	247	6.79	0.211	3831	356	125	4093	501	4028	491	3914	407	3916	354
07-SCT-018-RGB	225	6.67	0.21	3191	297	106	3406	417	3353	409	3247	338	3262	296
07-SCT-109-KHL	204	6.49	0.208	3194	291	88	3407	413	3354	405	3248	333	3265	290
04-RDY-049-KRO	203	6.51	0.208	3324	323	144	3545	445	3490	437	3382	364	3397	322
04-RDY-050-KRO	203	6.65	0.208	3219	305	120	3433	425	3380	417	3274	345	3290	304
07-SCT-033-KHL	190	6.42	0.207	364	56	46	388	67	382	66	367	59	372	57
04-RDY-052-KRO-RPT	182	6.44	0.206	3005	306	159	3201	414	3152	406	3051	342	3071	306
07-SCT-035-KHL	172	6.22	0.205	274	42	34	292	50	287	49	276	44	280	42
07-SCT-106-KHL	154	6.29	0.204	3036	282	99	3230	395	3181	388	3081	320	3103	281
07-SCT-105-KHL	111	5.83	0.2	1345	139	75	1428	186	1406	183	1349	153	1375	139
07-SCT-103-KHL	70	5.76	0.198	86	42	41	91	45	89	44	86	42	87	43

(1) Simple exposure age, based on steady production rate scaled using the altitude-latitude correction factors of Lal, EPSL 1991.

(2) Exposure age based on time-dependent production rate, scaled using the altitude-latitude correction factors of Dunai, 2000, 2001. See Balco et al. Quaternary Geochronology 2008, for further details.

(3) Exposure age based on time-dependent production rate, scaled using the altitude-latitude correction factors of Desilets and Zreda, 2001, 2006. See Balco et al. Quaternary Geochronology 2008, for further details.

(4) Exposure age based on time-dependent production rate, scaled using the altitude-latitude correction factors of Lifton et al, 2005. See Balco et al. Quaternary Geochronology 2008, for further details.

(5) Exposure age based on time-dependent production rate, scaled using the altitude-latitude correction factors of Lal (1991), adjusted for paleomagnetic field intensity and orientation as described in Nishiizumi et al., 1989. See Balco et al. Quaternary Geochronology 2008, for further details.