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 McMartin et al. (2025) bedrock McMa2025-1 McMa2025-A 15MOB035A01 65.3937 -89.9042 466 3.5 2.7 0.985341786284521 344681 6515 07KNSTD 2289649 99970 KNSTD - - 2015 52600 3500 49500 5100 - - 51783 3298 992 49401 4741 2210 - - - - McMartin et al. (2025) bedrock McMa2025-2 McMa2025-B 15MOB053A01 65.6115 -90.5104 464 2.5 2.7 0.989979788054658 405267 7107 07KNSTD 2175364 106794 KNSTD - - 2015 61900 4100 46400 4900 - - 60369 3828 1075 46371 4570 2329 - - - - McMartin et al. (2025) boulder McMa2025-3 McMa2025-B 16MOB147A01 65.6119 -90.5108 464 3 2.7 0.992982647051561 344133 7245 07KNSTD 2106415 115240 KNSTD - - 2016 50100 3200 43400 4500 - - 51216 3296 1092 44930 4561 2513 - - - - McMartin et al. (2025) bedrock McMa2025-4 McMa2025-C 15MOB054A01 65.5696 -90.3564 520 2.5 2.7 0.985059187971403 373075 7860 07KNSTD 2407726 121037 KNSTD - - 2015 53700 3600 49000 5200 - - 52771 3398 1127 48910 4856 2519 - - - - McMartin et al. (2025) bedrock McMa2025-5 McMa2025-D 15MOB055A01 65.5105 -90.1637 459 2.5 2.7 0.984615858137236 361815 7618 07KNSTD - - - - - 2015 55400 3700 - - - - 54349 3501 1160 - - - - - - - McMartin et al. (2025) bedrock McMa2025-6 McMa2025-D 16MOB144A01 65.5152 -90.1484 434 2.5 2.7 0.982822835252382 348495 7338 07KNSTD 2153259 100244 KNSTD - - 2016 54800 3600 47700 5000 - - 53735 3461 1147 47606 4632 2269 - - - - McMartin et al. (2025) bedrock McMa2025-7 McMa2025-E 16MOB146A01 65.4965 -90.4694 353 2 2.7 0.989979788054658 293916 6276 07KNSTD - - - - - 2016 47200 3000 - - - - 48484 3123 1048 - - - - - - - McMartin et al. (2025) bedrock McMa2025-8 McMa2025-F 17MOB018A01 65.1690 -93.7120 237 2 2.7 0.983922317192959 143812 3221 07KNSTD 858076 106355 KNSTD - - 2017 26200 1700 21900 3400 - - 26814 1728 605 22776 3434 2855 - - - - McMartin et al. (2025) sediments McMa2025-9 McMa2025-F 17MOB018B01 65.1690 -93.7120 237 45 2 1 128475 2646 07KNSTD 714907 73788 KNSTD - - 2017 29400 1900 23000 3100 - - 30607 1955 635 24209 3243 2529 - - - - McMartin et al. (2025) sediments McMa2025-10 McMa2025-F 17MOB018B02 65.1690 -93.7120 237 15 2 1 131210 2789 07KNSTD 768462 74545 KNSTD - - 2017 25200 1600 20800 2700 - - 26031 1667 557 21690 2797 2127 - - - - McMartin et al. (2025) sediments McMa2025-11 McMa2025-G 17MOB019A02 65.2231 -93.9275 240 18 2 1 108819 2316 07KNSTD 510376 50839 KNSTD - - 2017 21200 1300 14000 1800 - - 21919 1402 469 14593 1904 1464 - - - - McMartin et al. (2025) sediments McMa2025-12 McMa2025-H 17MOB022A02 65.3436 -92.9925 295 15 2 1 100470 2880 07KNSTD 489506 50780 KNSTD - - 2017 18200 1200 12400 1700 - - 18751 1252 540 12973 1733 1354 - - - - McMartin et al. (2025) bedrock McMa2025-13 McMa2025-I 15MOB074A01 65.3669 -89.1099 119 2 2.7 0.990077594875403 93434 3171 07KNSTD - - - - - 2015 18800 1300 - - - - 19313 1337 659 - - - - - - - McMartin et al. (2025) bedrock McMa2025-14 McMa2025-J 17MOB006A01 64.5991 -94.4051 102 2.5 2.7 0.981460655648718 104491 2219 07KNSTD - - - - - 2017 21900 1400 - - - - 22508 1440 481 - - - - - - - McMartin et al. (2025) bedrock McMa2025-15 McMa2025-K 17MOB008A01 64.5535 -93.7081 142 3 2.7 0.98226830289987 118540 2522 07KNSTD 803399 96963 KNSTD - - 2017 23900 1500 22800 3400 - - 24581 1573 526 23715 3513 2896 - - - - McMartin et al. (2025) bedrock McMa2025-16 McMa2025-K 17MOB009A01 64.5528 -93.7021 142 2.5 2.7 0.982278126663513 111329 2371 07KNSTD 725358 121339 KNSTD - - 2017 22400 1400 20500 3900 - - 22978 1470 492 21296 4017 3600 - - - - McMartin et al. (2025) bedrock McMa2025-17 McMa2025-L 15MOB068A01 64.4957 -90.4504 136 2 2.7 0.990077594875403 39764 916 07KNSTD - - - - - 2015 7800 500 - - - - 8032 517 185 - - - - - - - McMartin et al. (2025) bedrock McMa2025-18 McMa2025-L 15MOB069A01 64.4499 -90.4176 142 2.3 2.7 0.990067694079653 42735 1364 07KNSTD - - - - - 2015 8400 600 - - - - 8607 586 275 - - - - - - - McMartin et al. (2025) bedrock McMa2025-19 McMa2025-M 15MOB070A01 64.3614 -90.0172 149 2.4 2.7 0.990077594875403 44347 1213 07KNSTD - - - - - 2015 8600 600 - - - - 8880 586 243 - - - - - - - McMartin et al. (2025) bedrock McMa2025-20 McMa2025-N 15MOB078A01 65.3162 -88.8114 125 2 2.7 0.990076604795828 42401 1218 07KNSTD - - - - - 2015 8400 600 - - - - 8641 576 249 - - - - - - - McMartin et al. (2025) bedrock McMa2025-21 McMa2025-O 17MOB012A01 64.4250 -96.2359 114 2 2.7 0.976206901259176 41642 1046 07KNSTD 345755 51712 KNSTD - - 2017 8600 600 10000 1700 - - 8838 576 222 10425 1792 1567 - - - - McMartin et al. (2025) boulder McMa2025-22 McMa2025-P 15MOB110A01 64.6055 -90.0998 164 2.2 2.7 0.995340006098215 41205 1208 07KNSTD - - - - - 2015 7800 500 - - - - 8055 539 237 - - - - - - - McMartin et al. (2025) bedrock McMa2025-23 McMa2025-Q 17MOB030A01 65.7091 -98.4495 140 2 2.7 0.981383217869382 39968 2172 07KNSTD - - - - - 2017 8000 600 - - - - 8213 666 447 - - - - - - - McMartin et al. (2025) bedrock McMa2025-24 McMa2025-R 17MOB036A01 64.3216 -99.6566 197 2.5 2.7 0.973244721390398 35853 1106 07KNSTD 219741 25104 KNSTD - - 2017 6900 500 6000 900 - - 7124 481 220 6209 879 711 - - - - McMartin et al. (2025) bedrock McMa2025-25 McMa2025-S 17MOB043A01 60.8553 -97.2276 207 3 2.7 0.984659995835459 45928 1456 07KNSTD 311229 29428 KNSTD - - 2017 8700 600 8300 1100 - - 8970 610 285 8621 1088 819 - - - - McMartin et al. (2025) bedrock McMa2025-26 McMa2025-T 17MOB075A01 60.5383 -96.8860 212 2 2.7 0.986644171395461 48403 1251 07KNSTD - - - - - 2017 9000 600 - - - - 9309 609 241 - - - - - - - Reference: McMartin I, Godbout P-M, Tremblay T, Gosse JC, Campbell JE, Roy M, Schaefer JM, Randour I, 2025. Paired terrestrial cosmogenic nuclides support the mapping of relict polythermal terrains under the Keewatin ice divide, central mainland Nunavut, Canada. Quaternary Science Reviews 366, 109505. https://doi.org/10.1016/j.quascirev.2025.109505 Data comments: All sample data present in publication. Group ID based on sample location and geomorphology. expage.github.io - data from expage-202610