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fractured serpentinite continued until 3,153 mbsl, above which the slopes were
covered by mud with sporadic debris until the off-bottom point at 3,078 mbsl.
4.10
Dive 6K#1066
The first (3,443-3,401 mbsl) and second (3,387-3,382 mbsl) outcrops occurred
above the mud-covered debris apron. They consisted of massive pseudomorphic
serpentinite of dunite origin and highly foliated schistose serpentinite. The third
outcrop at 3,365-3,363 mbsl was of platy-jointed schistose serpentinite with folia-
tions steeply (70-80°) dipping ESE. Serpentinite sporadically occurred until
3,351 m. Between 3,350 and 3,205 mbsl, the slope was covered by semi-consolidated
mudstone and landslide debris containing rubble and blocks of serpentinite, andesite
to dacite, and sandstone. Then the submersible moved downslope to 3,407 mbsl,
where serpentinite breccia and schistose serpentinite were exposed.
4.11
Dive 6K#1067
The gentle lowermost slope between 3,452 and 3,436 mbsl was the mud-covered and
subsequent rubbly apron, from which a float stone of basaltic breccia was collected.
The steep slope with cliffs between 3,375 and 3,273 mbsl consisted of fractured
blocky rocks of basaltic breccia (at 3,391 mbsl) and andesite (at 3,376 and 3,306
mbsl), partly covered by semi-consolidated mud (at 3,436 mbsl). These extraordi-
nary deep occurrences of volcanic rocks are interpreted as slid-down blocks either
by rift faulting or landslide. After climbing mud-covered slopes, an outcrop of mas-
sive serpentinite occurred at 3,175 mbsl. The mud slope continued until 3,135 mbsl,
where the submersible turned to the south and downslope.
The new track started at 3,323 mbsl on a mud-covered slope. Outcrops of frac-
tured but massive serpentinite intermittently occurred at 3,322-3,372, 3,245, and
3,225-3,222 mbsl. A schistose serpentinite was also collected at 3,245 mbsl.
4.12
Dive 6K#1068
The submersible landed at 3,453 mbsl and climbed upslope on mud-covered debris
apron with sporadic blocks, from which schistose and transitionally massive ser-
pentinite floats were collected. The first outcrop of massive to transitionally schis-
tose serpentinite continued between 3,412 and 3,363 mbsl. Foliations are mostly
invisible in the outcrops, with exceptions at 3,389 and 3,363 mbsl, where it gently
(presumably <30 ) dipped to the southeast and northwest, respectively. Above the
outcrop, the slope between 3,360 and 3,160 mbsl consisted of rubbly talus containing
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