Publication Sample-type Sample-ID Group-ID Sample Lat(DD) Long(DD) Elev(masl) Thickn(cm) Density(g/cm3) Shield 10Be-conc(at/g) 10Be-unc(at/g) 10Be-std 26Al-conc(at/g) 26Al-unc(at/g) 26Al-std Sampl-year Publ-10-age(yr) Publ-10-unc(yr) Publ-26-age(yr) Publ-26-unc(yr) 10Be-age(yr) 10-ext-unc(yr) 10-int-unc(yr) 26Al-age(yr) 26-ext-unc(yr) 26-int-unc(yr) Extra-publ Margold et al. (2019) boulder Margo2019-1 Margo2019-A ALT-MM-15-01 49.10033 -112.22257 1136 1.5 2.7 1 196910 5330 07KNSTD 0 0 0 2015 17700 1200 - - 17933 1212 488 - - - - Margold et al. (2019) boulder Margo2019-2 Margo2019-B ALT-MM-15-02 49.77851 -113.65136 1122 1.5 2.65 1 163580 4570 07KNSTD 0 0 0 2015 14700 1000 - - 15013 1019 421 - - - - Margold et al. (2019) boulder Margo2019-3 Margo2019-B ALT-MM-15-03 49.77830 -113.65108 1120 2.5 2.65 1 162270 4660 07KNSTD 0 0 0 2015 14700 1000 - - 15044 1026 434 - - - - Margold et al. (2019) boulder Margo2019-4 Margo2019-C ALT-MM-15-04 49.96253 -113.68919 1006 1.5 2.65 1 157420 4390 07KNSTD 0 0 0 2015 15500 1000 - - 15870 1077 444 - - - - Margold et al. (2019) boulder Margo2019-5 Margo2019-D ALT-MM-15-05 49.95547 -113.83725 1231 1 2.65 1 183400 5690 07KNSTD 0 0 0 2015 15000 1000 - - 15239 1055 475 - - - - Margold et al. (2019) boulder Margo2019-6 Margo2019-D ALT-MM-15-06 49.95588 -113.83614 1209 1.5 2.65 1 100300 2880 07KNSTD 0 0 0 2015 8200 500 - - 8384 571 241 - - - - Margold et al. (2019) boulder Margo2019-7 Margo2019-D ALT-MM-15-07 49.95591 -113.83578 1195 1 2.65 1 168970 4570 07KNSTD 0 0 0 2015 14300 900 - - 14498 979 394 - - - - Margold et al. (2019) boulder Margo2019-8 Margo2019-E ALT-MM-15-08 50.10248 -113.78622 1132 2 2.65 1 165040 5120 07KNSTD 0 0 0 2015 15100 1000 - - 15006 1039 467 - - - - Margold et al. (2019) boulder Margo2019-9 Margo2019-E ALT-MM-15-09 50.13659 -113.75736 1069 3.5 2.65 1 1778470 40000 07KNSTD 0 0 0 2015 169500 11200 - - 173919 11911 4087 - - - - Margold et al. (2019) boulder Margo2019-10 Margo2019-F ALT-MM-15-10 50.30623 -113.87193 1177 1 2.65 1 183340 4970 07KNSTD 0 0 0 2015 15600 1000 - - 15842 1070 431 - - - - Margold et al. (2019) boulder Margo2019-11 Margo2019-F ALT-MM-15-11 50.30870 -113.87212 1160 1 2.65 1 165370 4910 07KNSTD 0 0 0 2015 14200 900 - - 14536 997 433 - - - - Margold et al. (2019) boulder Margo2019-12 Margo2019-G ALT-MM-15-12 50.53131 -114.13990 1208 2 2.65 1 181670 5640 07KNSTD 0 0 0 2015 14500 1000 - - 15396 1066 480 - - - - Margold et al. (2019) boulder Margo2019-13 Margo2019-H ALT-MM-15-13 51.63497 -114.47863 1150 4 2.65 1 164880 5120 07KNSTD 0 0 0 2015 14600 1000 - - 14723 1019 459 - - - - Margold et al. (2019) boulder Margo2019-14 Margo2019-I ALT-MM-15-14 52.17495 -114.86999 1066 2 2.65 1 255000 7910 07KNSTD 0 0 0 2015 22400 1600 - - 23623 1638 737 - - - - Margold et al. (2019) boulder Margo2019-15 Margo2019-I ALT-MM-15-15 52.18727 -114.88195 1069 2 2.65 1 164420 5100 07KNSTD 0 0 0 2015 15200 1000 - - 15332 1061 477 - - - - Margold et al. (2019) boulder Margo2019-16 Margo2019-J ALT-MM-15-16 53.38068 -116.78810 991 2.5 2.65 1 159970 4970 07KNSTD 0 0 0 2015 16300 1100 - - 15853 1098 494 - - - - Reference: Margold M, Gosse JC, Hidy AJ, Woywitka RJ, Young JM, Froese D, 2019. Beryllium-10 dating of the Foothills erratics train in Alberta, Canada, indicates detachment of the Laurentide ice sheet from the Rocky Mountains at ~15 ka. Quaternary Research 92, 469-482. Data comments: Sampling year based on sample names. Group ID based on sample location and geomorphology. Two groups (Margo2019-E/I) grouped with samples from Clark et al. (2022). expage.github.io - data from expage-202306