“…Direct estimates of the past basal thermal state of the ice sheet can be obtained by the analysis of modern distribution of rock temperatures measured in deep (1.5 -2 km deep) boreholes (Kukkonen and Safanda, 1996;Kukkonen et al, 1998;2011;Mareschal et al, 1999;Demezhko and Shchapov, 2001;Rolandone et al, 2003;Glasnev et al, 2004;Rath and Mottaghy, 2007;Majorowicz and Šafanda, 2008;Chouinard and Mareschal, 2009;Majorowicz, 2012;Demezhko et al, 2013;Pickler et al, 2016). However, there are only a few such data all over the world.…”