10Be and 26Al production rate calibration comments Site 1 - Littleton/Birch Hill moraine, NE USA Cosmogenic data from Balco et al. (2009) and Borchers et al. (2016). Erosion rate assumed to be 0.00007 cm/yr for all samples based on Balco et al. (2009). Sampling year based on sample names. Calibration age and uncertainty based on Borchers et al. (2016) IntCal09 age of 13900 ± 250 cal BP. Back-calculation with OxCal 4.2 yields a 14C age of 12005 ± 163 BP, which, when calibrated with IntCal13 yields an age of 13896 ± 230 cal BP. Plus 56/57 years for sampling year. Uncertainty is kept from Borchers et al. (2016) as 250 years. Site 2 - Leverett spillway, NE USA Cosmogenic data from Balco et al. (2009). Sampling year based on sample names. Calibration age based on IntCal04 calibration age in Balco et al. (2009) of 15850 ± 300 cal BP. Back-calculation with OxCal 4.2 yields a 14C age of 13349 ± 183 yr BP , which, when calibrated with IntCal13 yields an age of 16057 ± 274 cal BP. Plus 56 years for sampling year. Uncertainty is kept from Balco et al. (2009) as 300 years. Site 10Be production rate excluded from global average (no overlap within uncertainties and identified as an outlier with both Pierce's and Chauvenet's criterion). Site 3 - Cobblestone Hill spillway, NE USA Cosmogenic data from Balco et al. (2009). Sampling year based on sample names. Calibration age based on IntCal04 calibration age range in Balco et al. (2009) of 13051-13316 cal BP. Back-calculation with OxCal 4.2 yields a 14C age of 11299 ± 150 yr BP , which, when calibrated with IntCal13 yields an age of 13156 ± 151 cal BP. Plus 56 years for sampling year. Site 4 - Macaulay valley debris flow, New Zealand Cosmogenic data from Putnam et al. (2010). Calibration age based on ten 14C dates from Putnam et al. (2010b) calibrated in OxCal 4.2 using the SHCal13 calibration curve, yielding an age of 9651 ± 54 cal BP. Plus 58 years for sampling year. Site 5 - Boundary Stream tarn moraine, inner recessional ridges, New Zealand Cosmogenic data from Putnam et al. (2010). Calibration age based on a basal 14C date (OS-42664) of 14800 ± 65 BP from Vandergoes et al. (2008), calibrated in OxCal 4.2 using the SHCal13 calibration curve, yielding an age of 17956 ± 103 cal BP. Plus 58 years for sampling year. Uncertainty of 200 years assumed. Site 6 - Grøtlandsura rock avalanche, N Norway Cosmogenic data from Fenton et al. (2011). Calibration age based on two 14C dates from Fenton et al. (2011) calibrated in OxCal 4.2 using the IntCal13 calibration curve, yielding an age of 11382 ± 118 cal BP. Plus 56 years for sampling year. Site 7 - Russenes rock avalanche, N Norway Cosmogenic data from Fenton et al. (2011). Calibration age based on three 14C dates from Fenton et al. (2011), calibrated in OxCal 4.2 using the IntCal13 calibration curve, yielding an age of 10940 ± 111 cal BP. Plus 56 years for sampling year. Site 8 - Herminita moraine, Lago Argentino, Patagonia Cosmogenic data from Kaplan et al. (2011). Sample density assumed to be 2.65 g/cm3. Sampling year based on sample names. Calibration age based on 14C age of 10350 ± 45 BP calibrated with OxCal 4.2 and the SHCal13 curve, yielding an age of 12130 ± 144 cal BP. Plus 57 years for sampling year. One 10Be production rate is excluded (HE-07-12) to fulfill the clustering criterion. Site 9 - Puerto Bandera moraine, Lago Argentino, Patagonia Cosmogenic data from Kaplan et al. (2011). Sample density assumed to be 2.65 g/cm3. Sampling year based on sample names. Calibration age based on 14C data from Strelin et al. (2011) calibrated with OxCal 4.2 using the SHCal13 curve. Min age from one sample: 12642 ± 65 cal BP. Max age from eight samples: 12917 ± 62 cal BP. Calibration age: midpoint of the min and max ages. Uncertainty covers both the min and the max ages. Plus 58 years for sampling year. One 10Be production rate is excluded (EQ-08-04) to fulfill the clustering criterion. Site 10 - Tasiussaq moraine, W Greenland Cosmogenic data from Briner et al. (2012) and Young et al. (2013). Sampling year based on sample names. Calibration age based on 14C data from Briner et al. (2012) calibrated with OxCal 4.2 using the IntCal13 and Marine13 curves. Min age from four samples: 7641 ± 50 cal BP. Max age from four samples: 8617 ± 124 cal BP. Calibration age: midpoint of the min and max ages. Uncertainty covers both the min and the max ages. Plus 58/59 years for sampling year. Site 11 - Halsnøy moraine, W Norway Cosmogenic data from Goehring et al. (2012). Sampling year based on sample names. Calibration age based on the age-depth modelling OxCal code for the Eplandmyr stratigraphy in the supplementary data of Lohne et al. (2012), re-run using OxCal 4.2 and the IntCal13 curve, yielding a deglaciation age (upper glacial silt boundary) of 11590 ± 110 cal BP. Plus 58 years for sampling year. One 10Be production rate is excluded (YDC08-7) to fulfill the clustering criterion. Site 12 - Oldedalen rock avalanche, W Norway Cosmogenic data from Goehring et al. (2012). Sampling year based on sample names. Calibration age based on one 14C age of 5220 ± 80 BP from outer wood (Nesje 2002: Beta-155582), calibrated with OxCal 4.2 using the IntCal13 curve, yielding an age of 6009 ± 111 cal BP. Plus 58 years for sampling year. Two 10Be production rates are excluded (OL08-5, OL08-11) to fulfill the clustering criterion. Site 13 - Clyde River delta, Baffin Island Cosmogenic data from Balco et al. (2009) and Young et al. (2013). Topographic shielding factors calculated from DEM based on Codilean (2006) and Li (2013). 10Be concentrations from Balco et al. (2009) converted to 07KNSTD standardization before calculation of uncertainty-weighted mean concentrations. Sampling year based on sample names. Calibration age based on 14C data from Briner et al. (2007) calibrated with OxCal 4.2 using the Marine13 curve with ΔR = 130 year. Min age: 7949 ± 47 cal BP. Max age: 8449 ± 47 cal BP. Calibration age: midpoint of the min and max ages. Uncertainty covers both the min and the max ages. Plus 51/53 years for sampling year. Site 14 - Marrait moraine, W Greenland Cosmogenic data from Young et al. (2013). Sampling year based on sample names. Calibration age based on four 14C ages from Young et al. (2013b), calibrated with OxCal 4.2 using the IntCal13 calibration curve, yielding an age of 9192 ± 42 cal BP. Plus 61 years for sampling year. Site 15 - Chironico landslide, S Swiss Alps Cosmogenic data from Claude et al. (2014). Sample density assumed to be 2.65 g/cm3. Sampling year assumed to be 2012. Calibration age based on three 14C ages from Antognini and Volpers (2002), calibrated with OxCal 4.2 using the IntCal13 calibration curve, yielding an age of 13364 ± 166 cal BP. Plus 62 years for sampling year. One 10Be production rate is excluded (Chi-10) to fulfill the clustering criterion. Site 16 - Huancané II moraine, Quelccaya ice cap, Peru Cosmogenic data from Kelly et al. (2015) and Phillips et al. (2016). Latitude adjusted (-13.9657 to -13.9457) for sample Q-137 based on Figure 2 and Google Earth. Erosion rate assumed to be 0.0005 cm/yr for all samples based on Kelly et al. (2015). 10Be concentrations from single surface samples with various thickness and standard fixed to one thickness and standard (07KNSTD) before calculation of uncertainty-weighted mean concentrations. Sampling year for Kelly et al. (2015) samples assumed to be 2005 for KNSTD samples and 2008 for 07KNSTD samples. Calibration age based on 12 min and 22 max 14C ages from Kelly et al. (2015), calibrated with OxCal 4.2 using the SHCal13 calibration curve and using the probability density method presented in Kelly et al. (2015), yielding a maximum probability at 12235 cal BP. Plus 55/58 years for sampling year. Calibration age uncertainty of 150 years from Kelly et al. (2015). One 10Be production rate is excluded (Chi-10) to fulfill the clustering criterion. Site 17 - Lake Bonneville shoreline, W USA Cosmogenic data from Lifton et al. (2015). Calibration age based on 14C ages and U-series data (Lifton et al. 2015) with an IntCal09 age of 18300 ± 300 cal BP. Back-calculation with OxCal 4.2 yields a 14C age of 15119 ± 279 yr BP, which, calibrated with IntCal13, yields an age of 18311 ± 306 cal BP. Plus 55 years for sampling year. Site 18 - Billingen Baltic ice lake drainage, S Sweden Cosmogenic data from Stroeven et al. (2015). Calibration age based on correlation of clay varve record and the δ18O NGRIP record: drainage event age = 11620 cal BP. Plus 53 years for sampling year. Minus duration of emergence through water (129-575 years) based on estimated emergence history (Stroeven et al. 2015). A combined uncertainty of 300 years has been assigned to the clay varve/ice core correlation and emergence history. Site 19 - Glen Roy glacier lake shorelines Cosmogenic data from Small and Fabel (2015). Sampling year based on sample names. Calibration age based on proposed tephra ages (Small and Fabel 2015) using the midpoint of 12013 ± 267 b2k and 11938 ± 275 b2k. The uncertainty is constructed to cover the uncertainties of both the min and the max age. Plus 6 years for sampling year. Site 20 - Azanaques fan-delta, Bolivia, South America Cosmogenic data from Martin et al. (2015). Topographic shielding factors calculated from DEM based on Codilean (2006) and Li (2013). Sampling year assumed to be 2013. Calibration age based on Bayesian approach of Martin et al. (2015), with calibration against the IntCal13 curve, yielding an age of 16070 ± 640 cal BP. Plus 63 years for sampling year. Three 10Be production rates are excluded (AZA-30, AZA-32, AZA-33) to fulfill the clustering criterion. Site 21 - Coire Fearchair YD deglaciation, NW Scotland Cosmogenic data from Borchers et al. (2016). Sampling year based on sample names. Calibration age 11700 ± 300 cal BP from Borchers et al. (2016) based on Greenland ice core chronology. Plus 56 years for sampling year. Site 22 - Corrie nan Arr YD deglaciation, NW Scotland Cosmogenic data from Borchers et al. (2016). Sampling year based on sample names. Calibration age 11700 ± 300 cal BP from Borchers et al. (2016) based on Greenland ice core chronology. Plus 52/56 years for sampling year. One 10Be production rate is excluded (06-HKY-03A) to fulfill the clustering criterion. Site 23 - Maol Chean-dearg YD deglaciation, NW Scotland Cosmogenic data from Borchers et al. (2016). Sampling year based on sample names. Calibration age 11700 ± 300 cal BP from Borchers et al. (2016) based on Greenland ice core chronology. Plus 56 years for sampling year. Site 24 - Baboon Lake, Sierra Nevada, W USA Cosmogenic data from Borchers et al. (2016). Sampling year based on sample names. Calibration age based on Clark and Gillespie (1997) 14C age of 11190 ± 70 BP. Calibration with OxCal 4.2, using the IntCal13 curve, yields an age of 13047 ± 82 cal BP. Plus 57 years for sampling year. Calibration age uncertainty of 200 years assumed. Site 10Be production rate excluded from global average because of too much scatter. Site 25 - Puget Lowland, NW USA Cosmogenic data from Borchers et al. (2016). Sampling year based on sample names. Calibration age and uncertainty based on Borchers et al. (2016) IntCal09 age of 15560 ± 500 cal BP. Back-calculation with OxCal 4.2 yields a 14C age of 12893.5 ± 205.5 BP, which, calibrated with IntCal13, yields an age of 15388 ± 348 cal BP. Plus 56 years for sampling year. Uncertainty is kept from Borchers et al. (2016) as 500 years. Site 10Be production rate excluded from global average because of too much scatter.