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 Spector et al. (2020) bedrock Spec2020-1 Spec2020-A 13-NTK-030-HTR -81.10278 -85.14707 1307 3.25 2.53 1 7711500 236300 07KNSTD 38520500 880900 KNSTD 2013 - - - - 499581 39031 17389 384377 38152 10681 - Spector et al. (2020) bedrock Spec2020-2 Spec2020-A 13-NTK-031-HTR -81.10242 -85.14913 1307 1.75 2.58 1 7207300 383000 07KNSTD 35542800 778100 KNSTD 2013 - - - - 456582 41715 27254 343901 33313 8958 - Spector et al. (2020) bedrock Spec2020-3 Spec2020-B 13-NTK-002-JHN -81.07333 -85.45962 1402.5 4.5 2.6 0.99761 10079900 285500 07KNSTD 54363900 865600 KNSTD 2013 - - - - 627411 49946 20872 544189 57579 11457 - Spector et al. (2020) bedrock Spec2020-4 Spec2020-B 13-NTK-003-JHN -81.07433 -85.47006 1386.2 3.25 2.61 0.98576 4118800 117800 07KNSTD 25778600 428400 KNSTD 2013 - - - - 237083 17089 7199 226428 20329 4215 - Spector et al. (2020) bedrock Spec2020-5 Spec2020-B 13-NTK-006-JHN -81.07343 -85.46298 1424 2.5 2.59 1 10772900 302900 07KNSTD 59595000 913400 KNSTD 2013 - - - - 648722 51867 21544 584870 63157 12115 - Spector et al. (2020) bedrock Spec2020-6 Spec2020-C 16-PRT-050-GDW -81.11893 -85.74274 1775 3 2.58 0.99912 45977300 302700 07KNSTD 167566000 2912700 KNSTD 2017 - - - - 4644695 1138499 121037 2849565 1263491 273434 - Spector et al. (2020) bedrock Spec2020-7 Spec2020-C 16-PRT-051-GDW -81.11891 -85.74162 1781.8 1.5 2.59 0.99849 41839200 216100 07KNSTD 160736000 3004600 KNSTD 2017 - - - - 3588788 619519 51783 2082421 553132 128259 - Spector et al. (2020) bedrock Spec2020-8 Spec2020-C 16-PRT-052-GDW -81.12000 -85.72898 1836.6 1.5 2.56 0.99584 42637500 328700 07KNSTD 164920000 2790100 KNSTD 2017 - - - - 3375123 546584 67901 1937830 466693 98421 - Spector et al. (2020) bedrock Spec2020-9 Spec2019-H 13-NTK-021-PRT -81.13316 -85.35558 1237.6 3.5 2.55 0.94488 7886200 418800 07KNSTD 41936400 1113700 KNSTD 2013 - - - - 589033 55691 36372 496760 53025 17009 - Spector et al. (2020) bedrock Spec2020-10 Spec2019-G 13-NTK-023-PRT -81.13214 -85.36204 1360.9 4 2.6 0.99486 13812400 751100 07KNSTD 66952100 1291900 KNSTD 2013 - - - - 962908 101594 67250 764171 91970 21975 - Spector et al. (2020) bedrock Spec2020-11 Spec2020-D 16-PRT-053-TID -81.14080 -85.43602 2233.1 1.5 2.6 1 68376700 421600 07KNSTD 254935000 4714000 KNSTD 2017 - - - - 4744203 1202029 119764 3365601 2158944 495494 - Spector et al. (2020) bedrock Spec2020-11 Spec2020-D 16-PRT-053-TID -81.14080 -85.43602 2233.1 1.5 2.6 1 68860300 427100 07KNSTD 0 0 0 2017 - - - - 4811336 1247339 125008 - - - - Spector et al. (2020) bedrock Spec2020-12 Spec2020-D 16-PRT-054-TID -81.14048 -85.43753 2220.6 3.5 2.57 0.99858 63482300 578800 07KNSTD 242679000 4455500 KNSTD 2017 - - - - 4313053 950582 139233 3070169 1593545 363268 - Spector et al. (2020) bedrock Spec2020-12 Spec2020-D 16-PRT-054-TID -81.14048 -85.43753 2220.6 3.5 2.57 0.99858 62946900 401600 07KNSTD 0 0 0 2017 - - - - 4236636 905301 93300 - - - - Spector et al. (2020) bedrock Spec2020-13 Spec2020-D 16-PRT-055-TID -81.14011 -85.43768 2214.7 7.5 2.6 0.99995 71448600 540900 07KNSTD 239483000 4479400 KNSTD 2017 - - - - 5832766 2165920 264298 3393568 2222761 515714 - Spector et al. (2020) bedrock Spec2020-14 Spec2019-E 13-NTK-007-PRT -81.14435 -85.32991 1287.5 2.25 2.6 0.99224 11707300 430100 07KNSTD 58459100 870100 KNSTD 2013 - - - - 835521 74356 38097 676765 76732 14308 - Spector et al. (2020) bedrock Spec2020-15 Spec2019-E 13-NTK-024-PRT -81.14401 -85.32614 1254.5 2.5 2.61 1 9980500 528600 07KNSTD 47776600 1218200 KNSTD 2013 - - - - 708045 68996 44992 530773 57459 17767 - Spector et al. (2020) bedrock Spec2020-16 Spec2019-C 13-NTK-008-PRT -81.14516 -85.34441 1382.4 3.25 2.6 1 8787800 264400 07KNSTD 43056600 884900 KNSTD 2013 - - - - 537934 42298 18569 406731 40537 10277 - Spector et al. (2020) bedrock Spec2020-17 Spec2019-B 13-NTK-010-PRT -81.14581 -85.34841 1420.9 3 2.58 0.98474 15204300 446400 07KNSTD 70416800 1249600 KNSTD 2013 - - - - 1020477 90811 39084 764075 91549 20206 - Spector et al. (2020) bedrock Spec2020-18 Spec2019-A 13-NTK-012-PRT -81.14635 -85.35180 1469.2 3.5 2.56 0.95629 11815000 342600 07KNSTD 65093700 1091200 KNSTD 2013 - - - - 735800 60528 25787 673365 76560 16005 - Spector et al. (2020) bedrock Spec2020-19 Spec2020-E 13-NTK-014-PRT -81.14680 -85.35457 1524.3 2.5 2.6 0.97881 17530600 874900 07KNSTD 87423900 1933100 KNSTD 2013 - - - - 1096356 115719 72863 935045 124920 33902 - Spector et al. (2020) bedrock Spec2020-19 Spec2020-E 13-NTK-014-PRT -81.14680 -85.35457 1524.3 2.5 2.6 0.97881 17133300 816500 07KNSTD 87318300 1326800 KNSTD 2013 - - - - 1063537 109295 66893 933194 122097 23227 - Spector et al. (2020) bedrock Spec2020-20 Spec2020-F 13-NTK-015-PRT -81.14780 -85.36050 1616.8 3 2.56 0.99748 41304400 2315400 07KNSTD 143232000 2840900 KNSTD 2013 - - - - 4907530 1769165 1190981 2536278 913329 223957 - Spector et al. (2020) bedrock Spec2020-21 Spec2020-G 13-NTK-017-PRT -81.14905 -85.37856 1715.5 2.25 2.58 0.99593 43685900 1293600 07KNSTD 159422000 2337800 KNSTD 2013 - - - - 4600972 1226036 531342 2796384 1186880 218167 - Spector et al. (2020) bedrock Spec2020-22 Spec2020-G 13-NTK-018-PRT -81.14826 -85.37407 1659.9 3.5 2.6 0.98762 41451100 364300 07KNSTD 149100000 3029100 KNSTD 2013 - - - - 4729228 1198233 169306 2778525 1182766 296630 - Spector et al. (2020) bedrock Spec2020-23 Spec2019-F 13-NTK-029-PRT-BED -81.14759 -85.30435 1220 4.5 2.58 1 4885500 259600 07KNSTD 27661900 889000 KNSTD 2013 - - - - 332155 29387 19199 288177 28233 10706 - Spector et al. (2020) bedrock Spec2020-24 Spec2019-C 16-PRT-017-TID -81.14542 -85.34561 1384.8 2 2.56 0.99101 16905500 120900 07KNSTD 83822800 1470200 KNSTD 2016 - - - - 1202568 102200 11790 1036798 144762 31598 - Spector et al. (2020) bedrock Spec2020-25 Spec2019-B 16-PRT-023-TID -81.14603 -85.34973 1432.5 3.5 2.56 0.9849 18739200 135600 07KNSTD 93926700 1570600 KNSTD 2016 - - - - 1344440 118842 13870 1225161 190421 39712 - Spector et al. (2020) bedrock Spec2020-26 Spec2019-J 16-PRT-003-TCR -81.10383 -85.51145 1350 1.6 2.67 0.99383 13431200 232700 07KNSTD 60696200 1055200 KNSTD 2016 - - - - 918374 74549 20191 654367 73755 15964 - Spector et al. (2020) bedrock Spec2020-27 Spec2019-J 16-PRT-006-TCR -81.10412 -85.51534 1366 3 2.62 0.99248 14390700 127700 07KNSTD 65325300 1223100 KNSTD 2016 - - - - 1002016 80913 11541 726009 85417 19837 - Spector et al. (2020) bedrock Spec2020-28 Spec2019-K 16-PRT-009-TCR -81.10447 -85.51991 1402 5 2.62 0.98996 18852600 135800 07KNSTD 79259600 1577600 KNSTD 2016 - - - - 1426644 129020 14991 962370 129662 31900 - Spector et al. (2020) bedrock Spec2020-29 Spec2020-H 16-PRT-038-TCR -81.10328 -85.50629 1297 2.3 2.54 0.94355 6270600 88700 07KNSTD 32536100 596200 KNSTD 2016 - - - - 423288 29783 6668 337047 32179 7322 - Spector et al. (2020) bedrock Spec2020-30 Spec2019-L 16-PRT-043-TCT -81.10926 -85.53564 1478 2.5 2.55 0.95415 28470900 217100 07KNSTD 115597000 1926800 KNSTD 2017 - - - - 2959110 420604 51691 1918015 455819 94771 - Spector et al. (2020) bedrock Spec2020-31 Spec2020-I 16-PRT-044-TCT -81.10886 -85.54174 1529 1 2.61 0.91502 26125500 408100 07KNSTD 110088000 1876200 KNSTD 2017 - - - - 2261163 266399 65505 1619380 319428 67839 - Spector et al. (2020) bedrock Spec2020-32 Spec2020-J 13-NTK-032-NSH -81.89015 -89.29568 1681 2.5 2.6 1 6671800 307600 07KNSTD 35099700 406400 KNSTD 2013 - - - - 296232 24560 14720 236192 21074 3078 - Spector et al. (2020) bedrock Spec2020-33 Spec2020-J 13-NTK-033-NSH -81.88980 -89.29498 1682 4.5 2.59 1 24690100 1145600 07KNSTD 110962000 1422400 KNSTD 2013 - - - - 1457801 165393 99533 1114186 160850 25949 - Spector et al. (2020) bedrock Spec2020-34 Spec2020-K 13-NTK-034-NSH -81.89014 -89.29560 1629 9 2.59 1 20267100 1024700 07KNSTD 92022300 1573700 KNSTD 2013 - - - - 1236993 136400 86557 929347 121914 25976 - Spector et al. (2020) bedrock Spec2020-35 Spec2020-L 13-NTK-048-WHT -82.42078 -104.13777 2268 3 2.6 1 53196200 2420600 07KNSTD 205042000 2172500 KNSTD 2013 - - - - 2450258 368079 218753 1429115 247516 33142 - Spector et al. (2020) cobble Spec2020-36 Spec2020-M 13-NTK-046-WHT -82.43289 -104.05118 2388 2.75 2.54 1 48151300 2402700 07KNSTD 212296000 2540900 KNSTD 2013 - - - - 1639837 201313 126745 1262884 198557 29958 - Reference: Spector P, Stone J, Balco G, Hillebrand T, Thompson M, Black T, 2020. Miocene to Pleistocene glacial history of West Antarctica inferred from nunatak geomorphology and cosmogenic-nuclide measurements on bedrock surfaces. American Journal of Science 320, 637-676. Data comments: Sample data compiled and combined from supplementary material and ICE-D database. Group ID based on sample location and geomorphology. Several samples grouped with Spector et al. (2019) samples. expage.github.io - data from expage-202306