PROPOSED SITES
Site ENT-03A
Proposed Site ENT-03A will drill through the PTZ to sample a zone of incipient deformation and
fluid flow. This site would penetrate into the subducting sediment section all the way to basement.
A high priority is to sample pore fluids in great detail across the extensions of the 560 mbsf, 820
mbsf, décollement, and 1100 mbsf boundaries.
Site ENT-06A
Proposed Site ENT-06A will drill through the LTSZ and OOST to sample and investigate the
nature of lithology, defomation, physical properties gradient, and fluid flow path within the older
part of the accretionary prism. The penetration would be 800 mbsf. Fluid sampling across the
OOST is a high priority at this site.
Site ENT-07A
Proposed Site ENT-07A will penetrate the slope sediments which cover the LTSZ. Investigation of
the age and lithological characteristics would provide information on the history of accretion and
deformation of the prism. The drilling plan is to conduct APC/XCB to refusal.
Site WNT-01A
Proposed Site WNT-01A is a seaward reference site in the western transect.
Alternate Sites
Site ENT-02A
Proposed Site ENT-02A is an alternate to ENT-01A, the reference site.
Site ENT-04A
Proposed Site ENT-04 would drill through the first OOST zone to sample deformed accreted
sediments and across the seaward edge of the OOST. This site would provide information on the
gradient of deformation and chemistry of fluid intermediate between the less deformed section
(Sites ENT-01A and ENT-03A) and highly deformed and lithified section (Site ENT-06A).
Site ENT-05A
Proposed Site ENT-05A is located to penetrate slope basin sediments and the seaward-most
OOST.
Site ENT-08A
Proposed Site ENT-08A is an upper-slope site that would sample slope sediments, an older portion
of the accretionary prism in the LDRZ, and gas hydrates.
Site ENT-09A
Proposed Site ENT-09A is an upper-slope site that would sample slope sediments, an older portion
of the accretionary prism in the LDRZ, and gas hydrates.
Site WNT-02A
Proposed Site WNT-02A is a site that would penetrate the frontal thrust in the western transect.
Site WNT-03B
Proposed Site WNT-03B is located in the proto-thrust zone to explore conditions of initial
deformation (ductile strain and seismic discontinuities) and the nature of the décollement in
comparison with the eastern transect.