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Table 1 Coring tool types and bit sizes with the depths of the assembly used for hole C0023A

From: In-situ mechanical weakness of subducting sediments beneath a plate boundary décollement in the Nankai Trough

Hole C0023A
Top (mbsf) Bottom (mbsf) Coring type Bit size-out (in) Bit size-in (mm) Center bit
189.0 305.0 HPCS 11–7/16 61
305.0 314.5 ESCS 11–7/16 61
314.5 318.5 HPCS 11–7/16 61
318.5 353.0 ESCS 11–7/16
353.0 361.0 HPCS 11–7/16 61
361.0 403.0 ESCS 11–7/16
403.0 407.5 ESCS 11–7/16 61
407.5 410.5 HPCS 11–7/16 61
410.5 TD RCB 10–5/8 61
  1. HPCS hydraulic piston coring system, ESCS extended shoe coring system, RCB rotary core barrel coring, TD whole total vertical depth