Citation: Dr. Minor et Sb. Mukasa, ZIRCON U-PB AND HORNBLENDE AR-40-AR-39 AGES FOR THE DUFEK LAYERED MAFIC INTRUSION, ANTARCTICA - IMPLICATIONS FOR THE AGE OF THE FERRAR LARGE IGNEOUS PROVINCE, Geochimica et cosmochimica acta, 61(12), 1997, pp. 2497-2504