This report describes work carried out for DOE In the Paleomagnetism Laboratory of the Department of Geology and Planetary Science at-the University of Pittsburgh (Pittsburgh, PA 15260). Laboratory work was carried out by Mr. Robert J. Selfridge and Mr. Joseph Chepega under the direction of Dr. Victor A. Schmidt, Assoctstr, Professor of Geophysics. Dr. Karen K. Cohen of DOE collected the samples and provided specifications for the samples and for the analysis work that was carried out. Computer programs used In the analysis were written and tested by Dr. Schmldt. In the discussion that follows, numbers are keyed to the sections of the work order.