Thermal maturation values (conodont color alteration indices) for Paleozoic and Triassic rocks, Chandler Lake, De Long Mountains, Howard Pass, Killik River, Misheguk Mountain, and Point Hope quadrangles, northwest Alaska, and subsurface NPRA - Harris, Anita; Ellersieck, I.; Mayfield, C.F.; Tailleur, I.L. (Open-File Report, 1983)