Figure F8. Example of conductivity data collected for Core 201-1226E-12H. High values of conductivity (>1100 bits) correspond to the occurrence of headspace gas at the top of the APC core (dry) and lower values (<1000 bits) indicate the loss of headspace gas and contact of the conductivity electrodes with seawater (wet). This sensor response is opposite from that expected for seawater conductivity measurements and is simply an artifact of the sensor electronics. The data show that the core begins its descent into the drill pipe with headspace gas. An abrupt change in conductivity occurs at 2250 mbsl, indicating the complete disappearance of headspace gas in contact with the face of the TPC tool. During the return of the core to the surface, headspace gas reforms abruptly at 1360 mbsl and is maintained to the rig floor.

Figure F8. Example of conductivity data collected for Core 201-1226E-12H. High values of conductivity (>1100 bits) correspond to the occurrence of headspace gas at the top of the APC core (dry) and lower values (<1000 bits) indicate the loss of headspace gas and contact of the conductivity electrodes with seawater (wet). This sensor response is opposite from that expected for seawater conductivity measurements and is simply an artifact of the sensor electronics. The data show that the core begins its descent into the drill pipe with headspace gas. An abrupt change in conductivity occurs at 2250 mbsl, indicating the complete disappearance of headspace gas in contact with the face of the TPC tool. During the return of the core to the surface, headspace gas reforms abruptly at 1360 mbsl and is maintained to the rig floor.