Cruise report, 1990 Oregon Placer Mineral Research Cruise (A1 90WO) September 21-October 3, 1990

Abstract

42° 53.5' 42° 53.9' 42° 51.1' 42° 49.4 42° 50.0' 42° 46.5' 42° 43.0' 42° 46.5' Rogue River Area Roquel Rogue 2 Roque3 Rogue 4 Rogue 5 Rogue 6 Rogue? 'Center off target area. Navigation was old Loran A with errors up to 1-2 km. Latitude (and water depth) most accurate position. "Water depth in meters. Most reliable indicator off location in east west direction; target loc "'Heavy mineral concentrations in surface sediments at target site #Go!d content from Clifton, 1968 analysis off surface sediments ##Magnetic anomaly measured in gammas (regional magnetic field subtracted)