Skip navigation

IODP Expedition 330 Louisville Seamount Trail

Daily Science Report 40 -- Thursday, 20 January 2011


Site U1374 on 28.6°S Guyot 28° 35' 44.9988" S, 173° 16' 46.8012" W
Louisville Seamount Trail
0 m above sea level

By mid morning the second attempt to log Hole U1374A had to be abandoned. Even a shorter version of the tool string was not able to advance further then a few meters into open hole. Since downhole logging (including running the third-party borehole magnetometer) is considered very important for this particular deep site, it was decided to make a third and final attempt. The entire drill string was retrieved and Hole U1374A was re-entered with a used C-4 drill bit. The hole was then washed and reamed down to the bottom and after some additional treatment filled with heavy mud, which is supposed to stabilize the hole walls. Logging is scheduled to start the next morning. Sampling for personal, post-expedition research continued today with cores from the upper part of U1374A.