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 Lowell et al. (2021) boulder Lowe2021-1 Lowe2021-A AF-102 47.70942 -91.68219 465 2.37 2.7 1 99790 2148 07KNSTD 0 0 0 2011 16969 383 - - 16707 1094 361 - - - - Lowell et al. (2021) boulder Lowe2021-2 Lowe2021-B AF-103 47.71392 -91.93303 467 2.23 2.7 1 94479 1852 07KNSTD 0 0 0 2011 15979 327 - - 15794 1025 311 - - - - Lowell et al. (2021) boulder Lowe2021-3 Lowe2021-B AF-104 47.71524 -91.93476 470 1.84 2.7 1 94430 1857 07KNSTD 0 0 0 2011 15871 326 - - 15691 1018 310 - - - - Lowell et al. (2021) boulder Lowe2021-4 Lowe2021-B AF-106 47.71394 -91.93301 467 1.73 2.7 1 106594 2810 07KNSTD 0 0 0 2011 18054 501 - - 17685 1190 468 - - - - Lowell et al. (2021) boulder Lowe2021-5 Lowe2021-B AF-107 47.71392 -91.93297 468 1.45 2.7 1 103550 2108 07KNSTD 0 0 0 2011 17454 373 - - 17141 1116 350 - - - - Lowell et al. (2021) boulder Lowe2021-6 Lowe2021-C AF-108 48.02685 -91.92707 480 2.24 2.7 1 106446 2059 07KNSTD 0 0 0 2011 17812 362 - - 17450 1131 339 - - - - Lowell et al. (2021) boulder Lowe2021-7 Lowe2021-C AF-109 48.02693 -91.92699 487 1.76 2.7 1 108293 2890 07KNSTD 0 0 0 2011 17942 504 - - 17561 1184 471 - - - - Lowell et al. (2021) boulder Lowe2021-8 Lowe2021-C AF-110 48.02679 -91.92654 492 2.29 2.7 1 94964 1884 07KNSTD 0 0 0 2011 15634 324 - - 15452 1004 308 - - - - Lowell et al. (2021) boulder Lowe2021-9 Lowe2021-D AF-112 47.82497 -91.80781 449 1.82 2.7 0.999 103859 3153 07KNSTD 0 0 0 2011 17874 571 - - 17526 1209 534 - - - - Lowell et al. (2021) boulder Lowe2021-10 Lowe2021-D AF-113 47.82577 -91.80717 461 2.32 2.7 0.998 107432 2080 07KNSTD 0 0 0 2011 18410 375 - - 18010 1168 350 - - - - Lowell et al. (2021) boulder Lowe2021-11 Lowe2021-E AF-23 48.27993 -90.57586 487 2.41 2.7 1 95476 2341 07KNSTD 0 0 0 2006 15744 403 - - 15546 1034 383 - - - - Lowell et al. (2021) boulder Lowe2021-12 Lowe2021-E AF-24 48.27895 -90.57724 485 2.9 2.7 1 95442 2180 07KNSTD 0 0 0 2006 15835 378 - - 15633 1031 358 - - - - Lowell et al. (2021) boulder Lowe2021-12 Lowe2021-E AF-24x 48.27895 -90.57724 485 2.9 2.7 1 96701 2088 07KNSTD 0 0 0 2006 16054 363 - - 15835 1037 343 - - - - Lowell et al. (2021) boulder Lowe2021-13 Lowe2021-E AF-25 48.28056 -90.57725 485 2.86 2.7 1 93979 2214 07KNSTD 0 0 0 2006 15576 383 - - 15395 1019 364 - - - - Lowell et al. (2021) boulder Lowe2021-13 Lowe2021-E AF-25x 48.28056 -90.57725 485 2.86 2.7 1 95521 2251 07KNSTD 0 0 0 2006 15843 390 - - 15640 1035 370 - - - - Lowell et al. (2021) boulder Lowe2021-14 Lowe2021-E AF-114 48.26143 -90.56782 486 1.19 2.7 0.999 96912 1806 07KNSTD 0 0 0 2011 15859 309 - - 15645 1010 293 - - - - Lowell et al. (2021) boulder Lowe2021-15 Lowe2021-E AF-115 48.26132 -90.56790 498 1.67 2.7 0.996 90402 1550 07KNSTD 0 0 0 2011 14690 262 - - 14579 935 251 - - - - Lowell et al. (2021) boulder Lowe2021-16 Lowe2021-E AF-116 48.26061 -90.56725 490 1.5 2.7 1 99666 1813 07KNSTD 0 0 0 2011 16296 310 - - 16050 1035 293 - - - - Lowell et al. (2021) boulder Lowe2021-17 Lowe2021-E AF-117 48.26033 -90.56708 484 1.76 2.7 1 90886 1733 07KNSTD 0 0 0 2011 14917 297 - - 14793 957 283 - - - - Lowell et al. (2021) boulder Lowe2021-18 Lowe2021-E AF-118 48.26112 -90.56894 479 2.15 2.7 1 87860 2151 07KNSTD 0 0 0 2011 14517 370 - - 14426 959 354 - - - - Lowell et al. (2021) boulder Lowe2021-19 Lowe2021-F AF-20 48.33609 -90.13826 576 2.54 2.7 1 88124 2091 07KNSTD 0 0 0 2006 13335 328 - - 13243 877 315 - - - - Lowell et al. (2021) boulder Lowe2021-20 Lowe2021-F AF-21 48.33556 -90.13744 600 2.54 2.7 1 96926 2691 07KNSTD 0 0 0 2006 14400 416 - - 14267 967 398 - - - - Lowell et al. (2021) boulder Lowe2021-20 Lowe2021-F AF-21x 48.33556 -90.13744 600 2.54 2.7 1 95169 1974 07KNSTD 0 0 0 2006 14129 305 - - 14014 914 292 - - - - Lowell et al. (2021) boulder Lowe2021-21 Lowe2021-G AF-130 48.44321 -90.01846 448 1.98 2.7 1 78581 2456 07KNSTD 0 0 0 2011 13254 430 - - 13204 915 414 - - - - Lowell et al. (2021) boulder Lowe2021-22 Lowe2021-H AF-125 48.57571 -89.41331 454 1.76 2.7 1 77157 1642 07KNSTD 0 0 0 2011 12878 284 - - 12818 838 274 - - - - Lowell et al. (2021) boulder Lowe2021-23 Lowe2021-H AF-126 48.57343 -89.41777 465 3.32 2.7 1 77140 2107 07KNSTD 0 0 0 2011 12914 366 - - 12863 869 352 - - - - Lowell et al. (2021) boulder Lowe2021-24 Lowe2021-H AF-127 48.57349 -89.41785 464 1.75 2.7 1 78153 2782 07KNSTD 0 0 0 2011 12927 477 - - 12867 918 460 - - - - Lowell et al. (2021) boulder Lowe2021-25 Lowe2021-H AF-128 48.57334 -89.41739 468 2.17 2.7 1 78005 1640 07KNSTD 0 0 0 2011 12900 281 - - 12839 838 271 - - - - Lowell et al. (2021) boulder Lowe2021-26 Lowe2021-H AF-129 48.57335 -89.41697 474 1.39 2.7 0.989 78733 1405 07KNSTD 0 0 0 2011 13011 241 - - 12949 833 232 - - - - Lowell et al. (2021) boulder Lowe2021-27 Lowe2021-I AF-7 48.725 -89.694 479 5.7 2.7 1 75396 2134 07KNSTD 0 0 0 2004 12680 372 - - 12614 858 358 - - - - Lowell et al. (2021) boulder Lowe2021-28 Lowe2021-J AF-119 48.64577 -89.25386 497 2.43 2.7 1 75470 1526 07KNSTD 0 0 0 2011 12146 254 - - 12033 782 244 - - - - Lowell et al. (2021) boulder Lowe2021-29 Lowe2021-J AF-120 48.64592 -89.25419 488 1.54 2.7 0.998 81548 2196 07KNSTD 0 0 0 2011 13198 369 - - 13128 885 355 - - - - Lowell et al. (2021) boulder Lowe2021-30 Lowe2021-K AF-121 48.68281 -89.32540 466 2.18 2.7 0.994 77916 1996 07KNSTD 0 0 0 2011 12970 344 - - 12910 864 332 - - - - Lowell et al. (2021) boulder Lowe2021-31 Lowe2021-K AF-122 48.68285 -89.32649 473 2.84 2.7 1 72983 1567 07KNSTD 0 0 0 2011 12036 267 - - 11929 780 257 - - - - Lowell et al. (2021) boulder Lowe2021-32 Lowe2021-K AF-123 48.68345 -89.32832 481 2.22 2.7 0.998 78369 1591 07KNSTD 0 0 0 2011 12818 270 - - 12742 829 260 - - - - Lowell et al. (2021) boulder Lowe2021-33 Lowe2021-K AF-124 48.67933 -89.33350 476 2.58 2.7 1 72205 1589 07KNSTD 0 0 0 2011 11844 269 - - 11730 769 259 - - - - Lowell et al. (2021) boulder Lowe2021-34 Lowe2021-L AF-47 49.29088 -90.53669 516 2.04 2.7 0.999 80210 2223 07KNSTD 0 0 0 2006 12586 361 - - 12460 844 346 - - - - Lowell et al. (2021) boulder Lowe2021-35 Lowe2021-M AF-48 49.34731 -90.54654 560 2.7 2.7 0.996 81903 2904 07KNSTD 0 0 0 2006 12443 457 - - 12299 877 437 - - - - Lowell et al. (2021) boulder Lowe2021-36 Lowe2021-M AF-49 49.34712 -90.54651 561 3.03 2.7 1 77343 1845 07KNSTD 0 0 0 2006 11702 288 - - 11544 765 276 - - - - Lowell et al. (2021) boulder Lowe2021-37 Lowe2021-M AF-50 49.34701 -90.54663 555 2.4 2.7 1 75637 1815 07KNSTD 0 0 0 2006 11437 283 - - 11279 747 271 - - - - Lowell et al. (2021) boulder Lowe2021-38 Lowe2021-M AF-52 49.34708 -90.54557 558 2.4 2.7 1 77264 1887 07KNSTD 0 0 0 2006 11659 294 - - 11500 764 282 - - - - Reference: Lowell TV, Kelly MA, Howley JA, Fisher TG, Barnett PJ, Schwartz R, Zimmerman SRH, Norris N, Malone AGO, 2021. Near-constant retreat rate of a terrestrial margin of the Laurentide ice sheet during the last deglaciation. Geology 49, 1511-1515. Data comments: All sample data present in publication. Group ID based on sample location and geomorphology (Figure 1). expage.github.io - data from expage-202306