Fig. 2

Data from the incoming sites. a Depth distributions of porosity, thermal conductivity, temperature, NGR, clay mineral fraction, and lithologic units at site C0011. Green symbols in the porosity, thermal conductivity, and clay mineral fraction plots represent data from core sample measurements. Red symbols in the porosity, thermal conductivity, and temperature plots indicate data estimated using the electrical resistivity logs. Black symbols in the NGR plot are the original (not normalized) NGR values, and green and red symbols are the NGR normalized using the MAD porosities and porosities estimated from the electrical resistivity logs, respectively. Red symbols in the clay mineral fraction plot are results estimated using the new method developed in this study. In the rightmost panel, USB, MSB, and LSB represent the upper, middle, and lower Shikoku Basin sediments, respectively. Lithological units colored by red represent the standard sediments, for which the empirical conversion function is established. Lithological units colored by green represent the upper part of USB sediments or the slope apron facies younger than 1.5 Ma, which shows higher normalized NGR log values than the standard sediments possibly due to volcanic ashes included in sediments. b Same as a, but for site C0012. Lithological units colored by gray are excluded from comparison in Fig. 7 due to poor data condition. c A seismic profile around incoming sites after Figure F2 of Expedition 333 Scientist (2012b)