100000 1000 100 10 20 . 40 60 80 100 120 MEV Fig. 3. 140 160 180 200 Gamma-ray spectrum of sediment from Bravo Crater collected at a water depth of 160 feet, August, 1969. 12 ee a eee tee eee eee | 1000000
100000 1000 100 10 20 . 40 60 80 100 120 MEV Fig. 3. 140 160 180 200 Gamma-ray spectrum of sediment from Bravo Crater collected at a water depth of 160 feet, August, 1969. 12 ee a eee tee eee eee | 1000000