PART I. SAMPLE LOCATIONS AND EXPOSURE AGES, MARTHA'S VINEYARD AND CAPE COD, MASSACHUSETTS

Please cite:

Balco G., Stone J.O., Porter S.C., Caffee M. Cosmogenic-nuclide ages for New England coastal moraines, Martha's Vineyard and Cape Cod, Massachusetts, USA. Quaternary Science Reviews 21, 2127-2135 (2002).

in reference to these data.

Part II of this table shows production rate scaling factors used to calculate these exposure ages.

Sample	N latitude	W longitude	Elevation	[¹⁰Be ]¹	¹⁰Be age (yr)²	[²⁶Al]¹	²⁶Al age (yr)²	²⁶Al/¹⁰Be	Mean of Al and Be ages
	(DD)	(DD)	(m)	(10⁴ atoms/g)	and 1 std. error³	(10⁴ atoms/g)	and 1 std. error³	ratio	(yr) and 1 std. error³

Martha's Vineyard Moraine

PH-1	41.3567	70.7348	91	12.35 ± 0.37	24400 ± 1700	71.24 ± 3.12	23400 ± 1800	5.8 ± 0.3	24000 ± 1200
WR-2	41.3937	70.6992	54	12.29 ± 0.36	24700 ± 1700	74.91 ± 4.22	25000 ± 2100	6.1 ± 0.4	24800 ± 1300
WR-3	41.3922	70.6995	54	12.28 ± 0.47	24500 ± 1800	60.44 ± 17.58	20100 ± 6100	4.9 ± 1.4	24200 ± 1700
WR-4	41.3939	70.6972	30	12.18 ± 0.35	25300 ± 1700	70.7 ± 2.96	24400 ± 1800	5.8 ± 0.3	24900 ± 1200
WR-5	41.3920	70.6983	51	10.29 ± 0.3	21500 ± 1400	61.19 ± 2.95	21200 ± 1700	5.9 ± 0.3	21400 ± 1100
WR-6	41.3897	70.7017	51	11.06 ± 0.42	22700 ± 1600	65.12 ± 2.56	22200 ± 1600	5.9 ± 0.3	22400 ± 1100
MV 2-27-1	41.3483	70.7063	9	14.05 ± 0.36	29400 ± 1900	92.55 ± 3.71	32300 ± 2400	6.6 ± 0.3	30600 ± 1500
MV 2-27-2	41.3633	70.7258	69	28.25 ± 0.7	56900 ± 3800	162.78 ± 14.06	55200 ± 6200	5.8 ± 0.5	56400 ± 3200
MV 2-27-3	41.3483	70.7482	30	10.68 ± 0.28	22100 ± 1500	63.61 ± 4.08	21800 ± 1900	6 ± 0.4	22000 ± 1200
MV 2-27-4	41.3350	70.7977	33	7.55 ± 0.32	15700 ± 1100	45.77 ± 2.27	15700 ± 1200	6.1 ± 0.4	15700 ± 800
MV 3-07-1	41.3758	70.7320	51	n.m.	-	70.72 ± 2.43	23800 ± 1700	-	23800 ± 1700
MV 3-07-2	41.3758	70.7320	54	24.6 ± 0.61	49700 ± 3300	143.29 ± 7.6	48600 ± 4100	5.8 ± 0.3	49200 ± 2600
MV 3-07-3	41.3417	70.8143	51	9.71 ± 0.36	19800 ± 1400	56.41 ± 3.35	19100 ± 1600	5.8 ± 0.4	19500 ± 1100


Buzzards Bay Moraine

BB 2-21-1	41.5500	70.6495	12	7.98 ± 0.33	16700 ± 1200	48.39 ± 2.98	16800 ± 1500	6.1 ± 0.4	16700 ± 900
BB 2-24-1	41.5317	70.6588	24	8.82 ± 0.31	18400 ± 1300	52.6 ± 2.33	18100 ± 1400	6 ± 0.3	18200 ± 900
BB 2-24-2	41.5317	70.6597	24	8.45 ± 0.34	17600 ± 1300	54.13 ± 2.48	18600 ± 1400	6.4 ± 0.4	18100 ± 900
BB 2-29-1	41.5567	70.6458	24	9.29 ± 0.41	19300 ± 1400	57.01 ± 2.05	19600 ± 1400	6.1 ± 0.3	19500 ± 1000
BB 2-29-2	41.5567	70.6458	24	8.83 ± 0.62	18400 ± 1700	59.23 ± 11.31	20400 ± 4200	6.7 ± 1.4	18700 ± 1600
BB 3-06-1	41.5750	70.6178	24	8.92 ± 0.29	18600 ± 1300	66.16 ± 5.8	22800 ± 2500	7.4 ± 0.7	19500 ± 1100
BB 3-06-2	41.5783	70.6192	21	9.46 ± 0.32	19800 ± 1400	62.25 ± 3.25	21600 ± 1700	6.6 ± 0.4	20500 ± 1100
BB 3-06-3	41.5817	70.6217	21	9.21 ± 0.4	19300 ± 1400	59.7 ± 4.98	20700 ± 2200	6.5 ± 0.6	19700 ± 1200
BB 3-12-1	41.5250	70.6532	9	8.25 ± 0.41	17400 ± 1400	53.08 ± 3.71	18500 ± 1700	6.4 ± 0.6	17800 ± 1100
BB 3-12-2	41.5242	70.6528	18	9.38 ± 0.46	19600 ± 1500	60.08 ± 2.28	20800 ± 1500	6.4 ± 0.4	20200 ± 1100



¹Measured relative to LLNL internal standards. Procedural blanks contained 2.4 ± 1.8 x 10⁴ atoms ¹⁰Be and <10⁵ atoms ²⁶Al. ±1-standard-error uncertainties are shown and include all known sources of analytical error.
² Ages calculated using production rates of 5.1 ± 0.3 (¹⁰Be) and 31.1 ± 0.8 (²⁶Al) at/g SiO₂/yr at 1013.25 mb and latitude > 60°. Ages include a correction for paleomagnetic variation as described in the text. The scaling factors used are tabulated in Part II of this table..
³ Uncertainties include the production rate uncertainty for purposes of comparing individual exposure ages to geologic events dated by other methods. For comparison between exposure ages, only the analytical uncertainties should be taken into account.