Unnamed Pge Occurrence

GOTTFRIED, DAVID, FROELICH, A.J., RAIT, NORMA, AND ARUSCAVAGE, P.J., 1990, FRACTIONATION OF PALLADIUM AND PLATINUM IN A MESOZOIC DIABASE SHEET, GETTYSBURG BASIN, PENNSYLVANIA: IMPLICATIONS FOR MINERAL EXPLORATION: JOURNAL OF GEOCHEMICAL EXPLORATION, V. 37, P. 75-89.GOTTFRIED, DAVID, FROELICH, A.J., ARUSCAVAGE, P.J., AND RAIT, NORMA, 1989, ANOMALOUS PALLADIUM-PLATINUM OCCURRENCES IN MESOZOIC QUARTZ-NORMATIVE THOLEIITIC SUITES IN THE EASTERN UNITED STATES, IN SCHINDLER, K.S., ED., USGS RESEARCH ON MINERAL RESOURCES - 1989, PROGRAM AND ABSTRACTS: U.S. GEOLOGICAL SURVEY CIRCULAR 1935, P. 23-25.GOTTFRIED, DAVID, AND FROELICH, A.J., 1988, VARIATIONS OF PALLADIUM AND PLATINUM CONTENTS AND RATIOS IN SELECTED EARLY MESOZOIC THOLEIITIC ROCK ASSOCIATIONS IN THE EASTERN UNITED STATES, IN, FROELICH, A.J., AND ROBINSON, G.R., JR., EDS., STUDIES OF THE EARLY MESOZOIC BASINS OF THE EASTERN UNITED STATES: U.S. GEOLOGICAL SURVEY BULLETIN 1776, P. 332-341.