Table T19. HYACINTH pressure coring summary, Holes 1251B and 1251D.
Core
Deployment
number
Date
(Jul 2002)
Local time
(hr)
Depth
BSR
(mbsf)
Lithology
Core recovered
(cm)
Pressure
(kbar)
Comments
Water (mbsl)
Core
(mbsf)
204-1251B-








21Y FPC 1 27 2000 1224 171 193 Lightly indurated silty clay 71 (0 curated) 0 20 m above BSR; full stroke, no retraction; core exploded on deck; DSA and FPC logger did not function correctly.
40Y FPC 2 28 2210 1224 329 193 Well indurated silty clay 0 0 250 m below BSR; full retraction; internal implosion of liner; lower valve failed to seal; DSA and FPC logger did not function correctly.
48E HRC 1 29 1155 897 397 193 Stiff indurated silty clay 0 0 Tool diassembled vertically; end of stroke not reached; core liner broken; no retraction.
204-1251D-








28Y FPC 3 31 1500 1224 226 193 Moderately indurated silty clay 78 0 Cut good core upper seal dislodged; no retraction; DSA logger worked partially; FPC logger functioned correctly.
30E HRC 2 31 1830 897 229 193 Moderately indurated silty clay 22 20 0 Full retraction; sealed; stuck in transfer chamber.

Note: BSR = bottom-simulating reflector, DSA = drill string acceleration tool, FPC = Fugro Pressure Corer.