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Figure 2 | Earth, Planets and Space

Figure 2

From: Multiple damage zone structure of an exhumed seismogenic megasplay fault in a subduction zone - a study from the Nobeoka Thrust Drilling Project

Figure 2

Lithology, fracture density, and results of geophysical logging. Lithology and results of geophysical logging and number density of faults, fractures, breccias, and mineral veins (fracture density) per 10 cm along the drilled range of the Nobeoka Thrust. The high excursions in porosity, low excursions in resistivity, P-wave velocity, and density represent the brecciated zone (red bars), whereas the surrounding damage zones above and below are characterized by high resistivity, P-wave velocity, and S-wave velocity. Seven sets of fracture zones (blue bars) were found in the hanging wall and footwall. Areas outside the surrounding damage zones and brecciated zones are named the intact zones. The hanging wall consists of shale-rich intervals, sandstone-rich intervals, and the damage zone just above the fault core.

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