4:15 PM - 4:30 PM
[SCG61-10] A correlation between logging and drilled cores at Izena Hole: CK16-05 D/V Chikyu drilling
Keywords:correlation between logging and drilled cores, Izena Hole, D/V Chikyu
Thus we tried an integrated interpretation between cored samples and logging data as follows: 1) reconsideration of identification of lithological units defined on-board, focusing sedimentation structures, 2) modification of the proposed units according to the physical properties and geochemical compositions determined for discrete samples, and 3) comparison with continuous logging profiles of natural gamma ray intensities and adjust the depth of the lithological boundaries. During the third step of this integration, units having significant thickness > 10m or showing distinctive changes of densities and P-wave velocities were carefully identified for further integration with results of seismic surveys. In our investigation, not only upper and lower boundaries of sulfide-rich zones but also those between normal hemipelagic sediments and turbidites and those with silicified zones were commonly identified. It is expected to be recognized in seismic cross section profiles under optimized high resolution survey.
This work was supported by Council for Science,Technology and Innovation(CSTI),Crossministerial Strategic Innovation Promotion Program(SIP),“Next-generation technology for ocean resources exploration."