Figure F147. (A) Magnetic susceptibility by AMST and (B, C) intensity and inclination of the upper diabase sill (Sections 210-1276A-87R-6 through 88R-7 in Subunit 5C) before and after 20-mT AF demagnetization. NRM = natural remanent magnetization. For an explanation of the zonation of the sill, see Fig. F120 and "Igneous and Metamorphic Petrology".