Daily
Report for IODP Expedition 311, October 6, 2005
LOCATION:
Site U1327 (CAS-01B)
SCIENCE
UPDATE: The swell conditions that suspended drilling operations for most of 5
October subsided enough to allow coring operations to commence with the
recovery of HRC Core U1327D-4E at 00:50 hr on 6 October. The special tools hole
(Hole U1327D) was advanced throughout the day with six pressure core
deployments within LWD/MWD targeted zones. The HRC and FPC was
first deployed within 16-m-thick high electrical resistivity
zone previously identified from the LWD/MWD logs. The HRC was recovered under
pressure, but during the transfer for P-wave velocity and X-ray scanning the
transfer system lost pressure. The first FPC core system fired prematurely
(similar to the problem experienced in Hole U1329E) and recovered a sediment
core without pressure. Both of these pressure cores were X-ray and P-wave
velocity scanned, and were made available for geochemistry and physical
property subsampling. The hole was advanced by XCB
coring to 155.1 mbsf and the PCS was deployed, which
yielded a complete core under pressure (Core 10P). Core 10P was X-rayed and
moved into the PCS lab for degassing. The hole was advanced by XCB coring to
170.5 mbsf and the HRC was deployed and Core 12E was
recovered with sediment and under pressure. The FPC was deployed again at a
depth of 203.3 mbsf and recovered a core (Core 13Y)
under pressure. Most of the XCB cores obtained between the pressure core
sections contained IR cold-spots that were subsampled
for interstitial water analysis and microbiology subsampling.
A few samples were preserved in liquid nitrogen.