Rock-Eval 6 pyrolysis and total organic carbon (TOC) analyses were performed on 144 samples collected from outcrop in the northern Mackenzie and eastern Richardson mountains, at the margin of Peel Plateau, as well as from Peel Plain (Figure 1). These samples were collected to evaluate the source rock potential and thermal maturation of specific formations ranging from Proterozoic to Cretaceous. The new data will augment previously reported data from well cuttings and outcrops (reported in Pyle et al., 2006a; 2006b). The data are reported in a Microsoft ? Excel spreadsheet, as well as a shapefile (in ESRI?s ArcView? .shp format) to enable their integration into existing data sets or mapping programs.