TY - RPRT TI - Two-dimensional finite element models of the variation of heat flow with depth caused by refraction at a low conductivity graben AU - R. W. Saltus AU - A.H. Lachenbruch PY - 1987 DO - 10.3133/ofr87618 UR - https://pubs.usgs.gov/publication/ofr87618 ID - ofr87618 ER -