Figure 4 (continued). M. Core 164-997A-18P released 270 mL of gas (~95 mL of CH4) at 0ºC over 77 min, and 450 mL of gas (~275 mL of CH4) at less than ~15ºC over a total time of 1136 min. N. Core 164-997A-25P released 7485 mL of gas (~7395 mL of CH4) at less than ~15ºC over a total time of 276 min. Large quantities of gas (>4 L) were released from this core in several minutes (because the ice bath was needed elsewhere). At the start of degassing, this core should have had CH4 hydrate even after equilibration of gas with borehole water in the outer chamber. O. Core 164-997A-33P released 255 mL of gas (~130 mL of CH4) at 0ºC over 69 min, and 290 mL of gas (~175 mL of CH4) at less than ~15ºC over a total time of 271 min. P. Core 164-997A-49P released 6785 mL of gas (~6655 mL of CH4) at 0ºC over 158 min, and 7050 mL of gas (~6920 mL of CH4) at less than ~15ºC over a total time of 217 min. This core should have had CH4 hydrate even after equilibration of gas with borehole water in the outer chamber.
