Initial Reports, Volume 201 Shipborad Scientific Party Chapter 12, Table T5. Iron concentrations of replicate interstitial waters passed through different filters, Hole 1231E. Core, section, interval (cm) Iron (0.45-um filter) (uM) Iron (0.02-um filter) (uM) 201-1231E- 1H-1, 0-10 0.8 0.7 1H-1, 10-20 0.7 0.7 1H-1, 40-50 1.5 1.7 1H-1, 70-80 8.6 8.5 1H-1, 100-110 14.3 14.5 3H-2, 70-80 15.7 16.3 3H-2, 140-150 13.4 12.3 3H-3, 70-80 13.8 13 3H-3, 140-150 22.4 22.8 10H-5, 135-140 1 2 11H-5, 135-140 0.9 0.9