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 14C-conc(at/g) 14C-unc(at/g) Sampl-year Publ-10-age(yr) Publ-10-unc(yr) Publ-26-age(yr) Publ-26-unc(yr) Publ-14-age(yr) Publ-14-unc(yr) 10Be-age(yr) 10-ext-unc(yr) 10-int-unc(yr) 26Al-age(yr) 26-ext-unc(yr) 26-int-unc(yr) 14C-age(yr) 14-ext-unc(yr) 14-int-unc(yr) Extra-publ Clark et al. (2022) boulder Clar2022-1 Margo2019-E ABS-1-16 50.090 -113.796 1205 2.5 2.65 1 162416 5086 07KNSTD - - - - - 2016 14296 449 - - - - 14106 957 443 - - - - - - - Clark et al. (2022) boulder Clar2022-2 Margo2019-E ABS-2-16 50.090 -113.796 1213 1 2.65 1 173684 3817 07KNSTD - - - - - 2016 15002 331 - - - - 14771 947 326 - - - - - - - Clark et al. (2022) boulder Clar2022-3 Margo2019-E ABS-3-16 50.086 -113.796 1233 2.5 2.65 1 173583 4355 07KNSTD - - - - - 2016 14937 376 - - - - 14710 960 370 - - - - - - - Clark et al. (2022) boulder Clar2022-4 Margo2019-E ABS-4-16 50.083 -113.793 1234 2 2.65 1 158745 4001 07KNSTD - - - - - 2016 13599 343 - - - - 13389 874 339 - - - - - - - Clark et al. (2022) boulder Clar2022-5 Margo2019-E ABS-5-16 50.083 -113.792 1237 2.5 2.65 1 184652 6729 07KNSTD - - - - - 2016 15834 579 - - - - 15557 1096 569 - - - - - - - Clark et al. (2022) boulder Clar2022-6 Margo2019-E ABS-6-16 50.083 -113.792 1237 2.5 2.65 1 397648 7947 07KNSTD - - - - - 2016 34014 690 - - - - 32917 2097 663 - - - - - - - Clark et al. (2022) boulder Clar2022-7 Margo2019-E ABS-7-16 50.083 -113.792 1236 2 2.65 1 193879 4823 07KNSTD - - - - - 2016 16567 414 - - - - 16260 1060 406 - - - - - - - Clark et al. (2022) boulder Clar2022-8 Margo2019-E ABS-8-16 50.083 -113.791 1236 1 2.65 1 407358 8891 07KNSTD - - - - - 2016 34440 764 - - - - 33332 2144 734 - - - - - - - Clark et al. (2022) boulder Clar2022-9 Margo2019-E ABS-9-16 50.086 -113.798 1231 4 2.65 1 197592 4304 07KNSTD - - - - - 2016 17223 377 - - - - 16906 1083 370 - - - - - - - Clark et al. (2022) boulder Clar2022-10 Margo2019-E ABS-10-16 50.086 -113.798 1231 3.5 2.65 1 180380 4147 07KNSTD - - - - - 2016 15667 361 - - - - 15408 993 356 - - - - - - - Clark et al. (2022) boulder Clar2022-11 Margo2019-I ABC-1-16 52.171 -114.831 1068 2.5 2.65 1 148825 4524 07KNSTD - - - - - 2016 14633 447 - - - - 14062 949 429 - - - - - - - Clark et al. (2022) boulder Clar2022-12 Margo2019-I ABC-2-16 52.171 -114.831 1068 2.5 2.65 1 157248 4412 07KNSTD - - - - - 2016 15459 436 - - - - 14838 986 418 - - - - - - - Clark et al. (2022) boulder Clar2022-13 Margo2019-I ABC-3-16 52.168 -114.828 1074 3 2.65 1 150654 5729 07KNSTD - - - - - 2016 14800 566 - - - - 14220 1013 543 - - - - - - - Clark et al. (2022) boulder Clar2022-14 Margo2019-I ABC-4-16 52.168 -114.829 1067 2.5 2.65 1 141148 5848 07KNSTD - - - - - 2016 13888 579 - - - - 13336 975 554 - - - - - - - Clark et al. (2022) boulder Clar2022-15 Margo2019-I ABC-5-16 52.168 -114.829 1069 3.5 2.65 1 165346 4190 07KNSTD - - - - - 2016 16370 418 - - - - 15695 1026 399 - - - - - - - Clark et al. (2022) boulder Clar2022-16 Margo2019-I ABC-6-16 52.169 -114.826 1054 2.5 2.65 1 152087 3820 07KNSTD - - - - - 2016 15125 382 - - - - 14532 948 366 - - - - - - - Clark et al. (2022) boulder Clar2022-17 Margo2019-I ABC-7-16 52.168 -114.828 1066 2 2.65 1 273844 6005 07KNSTD - - - - - 2016 26850 596 - - - - 25439 1634 561 - - - - - - - Clark et al. (2022) boulder Clar2022-18 Margo2019-I ABC-8-16 52.170 -114.829 1077 6 2.65 1 201100 4496 07KNSTD - - - - - 2016 20176 455 - - - - 19277 1239 433 - - - - - - - Clark et al. (2022) boulder Clar2022-19 Margo2019-I ABC-9-16 52.173 -114.854 1071 3 2.65 1 142730 4481 07KNSTD - - - - - 2016 14055 444 - - - - 13497 916 425 - - - - - - - Clark et al. (2022) boulder Clar2022-20 Margo2019-I ABC-10-16 52.173 -114.854 1071 2 2.65 1 132513 4257 07KNSTD - - - - - 2016 12943 418 - - - - 12351 843 398 - - - - - - - Clark et al. (2022) boulder Clar2022-21 Margo2019-I ABC-11-16 52.173 -114.854 1071 3 2.65 1 208883 4638 07KNSTD - - - - - 2016 20565 461 - - - - 19612 1260 438 - - - - - - - Clark et al. (2022) boulder Clar2022-22 Margo2019-I ABC-12-16 52.174 -114.854 1066 3 2.65 1 149962 5046 07KNSTD - - - - - 2016 14828 502 - - - - 14250 983 481 - - - - - - - Clark et al. (2022) boulder Clar2022-23 Clar2022-A ABN-6-16 53.980 -118.862 1698 3.5 2.65 1 224897 5893 07KNSTD - - - - - 2016 13435 355 - - - - 12470 818 328 - - - - - - - Clark et al. (2022) boulder Clar2022-24 Clar2022-A ABN-7-16 53.980 -118.862 1698 2 2.65 1 222102 5468 07KNSTD - - - - - 2016 13107 325 - - - - 12115 788 299 - - - - - - - Clark et al. (2022) boulder Clar2022-25 Clar2022-A ABN-8-16 53.980 -118.862 1698 1.5 2.65 1 242270 5824 07KNSTD - - - - - 2016 14241 345 - - - - 13258 859 320 - - - - - - - Clark et al. (2022) boulder Clar2022-26 Clar2022-A ABN-9-16 53.980 -118.862 1698 1.5 2.65 1 218161 5108 07KNSTD - - - - - 2016 12821 303 - - - - 11815 763 277 - - - - - - - Clark et al. (2022) boulder Clar2022-27 Clar2022-B ABN-10-16 53.941 -119.114 1888 2 2.65 1 211806 15680 07KNSTD - - - - - 2016 10818 807 - - - - 9894 945 734 - - - - - - - Clark et al. (2022) boulder Clar2022-28 Clar2022-B ABN-11-16 53.941 -119.114 1888 2 2.65 1 292044 7316 07KNSTD - - - - - 2016 14925 377 - - - - 13838 902 348 - - - - - - - Clark et al. (2022) boulder Clar2022-29 Clar2022-B ABN-12-16 53.938 -119.113 1964 1.5 2.65 1 286442 12431 07KNSTD - - - - - 2016 13776 603 - - - - 12715 944 554 - - - - - - - Clark et al. (2022) boulder Clar2022-30 Clar2022-B ABN-13-16 53.936 -119.112 1961 3 2.65 1 313856 11544 07KNSTD - - - - - 2016 15317 569 - - - - 14177 1001 523 - - - - - - - Clark et al. (2022) boulder Clar2022-31 Clar2022-B ABN-14-16 53.936 -119.112 1962 3 2.65 1 302088 14286 07KNSTD - - - - - 2016 14732 707 - - - - 13627 1044 647 - - - - - - - Clark et al. (2022) boulder Clar2022-32 Clar2022-B ABN-15-16 53.939 -119.114 1931 2 2.65 1 272107 9706 07KNSTD - - - - - 2016 13468 484 - - - - 12407 868 444 - - - - - - - Clark et al. (2022) boulder Clar2022-33 Clar2022-B ABN-17-16 53.940 -119.113 1894 5.5 2.65 1 286008 8803 07KNSTD - - - - - 2016 14970 465 - - - - 13897 940 429 - - - - - - - Clark et al. (2022) boulder Clar2022-34 Clar2022-B ABN-18-16 53.940 -119.113 1894 3.5 2.65 1 302646 9476 07KNSTD - - - - - 2016 15586 493 - - - - 14454 981 454 - - - - - - - Clark et al. (2022) boulder Clar2022-35 Clar2022-C BCS-1-16 56.078 -122.162 992 2 2.65 1 133547 3531 07KNSTD - - - - - 2016 14074 375 - - - - 12879 847 342 - - - - - - - Clark et al. (2022) boulder Clar2022-36 Clar2022-C BCS-2-16 56.078 -122.162 992 2 2.65 1 129846 4257 07KNSTD - - - - - 2016 13685 452 - - - - 12491 856 411 - - - - - - - Clark et al. (2022) boulder Clar2022-37 Clar2022-C BCS-3-16 56.078 -122.163 993 2 2.65 1 127423 3470 07KNSTD - - - - - 2016 13416 368 - - - - 12224 807 334 - - - - - - - Clark et al. (2022) boulder Clar2022-38 Clar2022-C BCS-4-16 56.078 -122.164 1005 4 2.65 1 141467 10119 07KNSTD - - - - - 2016 14986 1095 - - - - 13730 1286 985 - - - - - - - Clark et al. (2022) boulder Clar2022-39 Clar2022-C BCS-5-16 56.077 -122.162 987 3 2.65 1 127409 3474 07KNSTD - - - - - 2016 13596 373 - - - - 12409 820 339 - - - - - - - Clark et al. (2022) boulder Clar2022-40 Clar2022-C BCS-6-16 56.069 -122.174 1132 3 2.65 1 148788 3522 07KNSTD - - - - - 2016 14033 334 - - - - 12827 829 305 - - - - - - - Clark et al. (2022) boulder Clar2022-41 Clar2022-C BCS-7-16 56.069 -122.174 1133 2 2.65 1 153436 3754 07KNSTD - - - - - 2016 14344 353 - - - - 13112 852 322 - - - - - - - Clark et al. (2022) boulder Clar2022-42 Clar2022-C BCS-8-16 56.069 -122.174 1134 1 2.65 1 139249 3972 07KNSTD - - - - - 2016 12899 370 - - - - 11685 778 334 - - - - - - - Clark et al. (2022) boulder Clar2022-43 Clar2022-C BCS-9-16 56.069 -122.174 1134 3 2.65 1 150700 4096 07KNSTD - - - - - 2016 14190 388 - - - - 12976 857 354 - - - - - - - Clark et al. (2022) boulder Clar2022-44 Clar2022-C BCS-10-16 56.068 -122.174 1152 1 2.65 1 148228 3651 07KNSTD - - - - - 2016 13526 335 - - - - 12303 800 304 - - - - - - - Clark et al. (2022) boulder Clar2022-45 Clar2022-C BCS-11-16 56.068 -122.173 1153 1.5 2.65 1 150470 3650 07KNSTD - - - - - 2016 13775 336 - - - - 12556 815 306 - - - - - - - Clark et al. (2022) boulder Clar2022-46 Clar2022-C BCS-12-16 56.068 -122.173 1142 3.5 2.65 1 142821 8227 07KNSTD - - - - - 2016 13412 778 - - - - 12207 1018 705 - - - - - - - Clark et al. (2022) boulder Clar2022-47 Clar2022-C BCS-13-16 56.068 -122.173 1142 2 2.65 1 141222 5510 07KNSTD - - - - - 2016 13102 514 - - - - 11887 853 465 - - - - - - - Clark et al. (2022) boulder Clar2022-48 Clar2022-C BCS-14-16 56.069 -122.174 1128 2 2.65 1 144520 3664 07KNSTD - - - - - 2016 13566 346 - - - - 12355 807 314 - - - - - - - Clark et al. (2022) boulder Clar2022-49 Clar2022-C BCS-15-16 56.069 -122.175 1127 5 2.65 1 153288 3480 07KNSTD - - - - - 2016 14755 337 - - - - 13508 869 308 - - - - - - - Clark et al. (2022) boulder Clar2022-50 Clar2022-D BCC-1-16 57.563 -122.932 1152 2 2.65 1 158249 5582 07KNSTD - - - - - 2016 14447 513 - - - - 13116 915 464 - - - - - - - Clark et al. (2022) boulder Clar2022-51 Clar2022-D BCC-2-16. 57.518 -122.913 1181 2 2.65 1 114384 5521 07KNSTD - - - - - 2016 10186 494 - - - - 9154 706 443 - - - - - - - Clark et al. (2022) boulder Clar2022-52 Clar2022-D BCC-3-16 57.443 -122.872 1209 2.5 2.65 1 151289 5646 07KNSTD - - - - - 2016 13225 496 - - - - 11936 845 447 - - - - - - - Clark et al. (2022) boulder Clar2022-53 Clar2022-D BCC-4-16 57.445 -122.873 1224 4 2.65 1 177504 6693 07KNSTD - - - - - 2016 15512 589 - - - - 14095 1002 533 - - - - - - - Clark et al. (2022) boulder Clar2022-54 Clar2022-D BCC-5-16 57.445 -122.873 1224 5 2.65 1 167369 7667 07KNSTD - - - - - 2016 14745 680 - - - - 13398 1014 616 - - - - - - - Clark et al. (2022) bedrock Clar2022-55 Clar2022-E BCN-1-16 58.699 -123.798 1038 2 2.65 1 142064 4155 07KNSTD - - - - - 2016 14281 419 - - - - 12889 863 378 - - - - - - - Clark et al. (2022) bedrock Clar2022-56 Clar2022-E BCN-2-16 58.699 -123.798 1038 2 2.65 1 153339 9464 07KNSTD - - - - - 2016 15414 956 - - - - 13919 1202 862 - - - - - - - Clark et al. (2022) bedrock Clar2022-57 Clar2022-E BCN-3-16 58.699 -123.798 1038 2 2.65 1 140317 3293 07KNSTD - - - - - 2016 14101 332 - - - - 12722 822 300 - - - - - - - Clark et al. (2022) boulder Clar2022-58 Clar2022-E BCN-4-16 58.698 -123.800 1039 2.5 2.65 1 140080 3851 07KNSTD - - - - - 2016 14124 390 - - - - 12745 843 352 - - - - - - - Clark et al. (2022) boulder Clar2022-59 Clar2022-E BCN-5-16 58.698 -123.800 1039 2.3 2.65 1 144102 5043 07KNSTD - - - - - 2016 14501 510 - - - - 13100 912 460 - - - - - - - Clark et al. (2022) boulder Clar2022-60 Clar2022-E BCN-7-16 58.698 -123.800 1039 4 2.65 1 137040 3469 07KNSTD - - - - - 2016 13983 355 - - - - 12623 824 321 - - - - - - - Clark et al. (2022) boulder Clar2022-61 Clar2022-E BCN-8-16 58.698 -123.800 1039 4 2.65 1 145636 3929 07KNSTD - - - - - 2016 14862 403 - - - - 13433 886 364 - - - - - - - Clark et al. (2022) bedrock Clar2022-62 Clar2022-E BCN-9-16 58.691 -123.783 1035 4.5 2.65 1 133431 3519 07KNSTD - - - - - 2016 13717 363 - - - - 12370 813 327 - - - - - - - Clark et al. (2022) bedrock Clar2022-63 Clar2022-E BCN-10-16 58.691 -123.783 1035 1.5 2.65 1 145013 3380 07KNSTD - - - - - 2016 14555 341 - - - - 13138 848 307 - - - - - - - Clark et al. (2022) bedrock Clar2022-64 Clar2022-E BCN-11-16 58.691 -123.783 1035 3 2.65 1 138994 3199 07KNSTD - - - - - 2016 14118 326 - - - - 12746 821 294 - - - - - - - Reference: Clark J, Carlson AE, Reyes AV, Carlson ECB, Guillaume L, Milne GA, Tarasov L, Caffee M, Wilcken K, Rood DH, 2022. The age of the opening of the ice-free corridor and implications for the peopling of the Americas. Proceedings of the National Academy of Sciences 119, e2118558119. https://doi.org/10.1073/pnas.2118558119 Data comments: Sample density assumed to be 2.65 g/cm3. Topographic shielding factor assumed to be 1. 10Be standard assumed to be KNSTD. Sampling year based on sample names. Group ID based on publication although ABN samples split into two groups (located c. 17 km apart). 22 samples grouped with samples from Margold et al. (2019). expage.github.io - data from expage-202610