OPERATIONS
SITE 1079
(Proposed Site MAB-2)
Hole 1079A
The vessel proceeded in dynamic positioning (DP) mode to the GPS coordinates of Site 1079, where a beacon was deployed at 1604 hr on 4 September. A second beacon was dropped at 1650 hr as a precautionary measure because of erratic acoustics initially attributed to a distorted beacon signal. It was later determined that fishing boats in the area were transmitting signals that temporally affected the DP system and the precision depth recorder (PDR). Hole 1079A was spudded at 2007 hr on 4 September. The seafloor depth was established at 749.2 mbrf by DPM. APC Cores 175-1079A-1H through 14H were taken from 0 to 121.0 mbsf, with 121.0 m cored and 124.6 m recovered (103.0%). Cores were oriented starting with 4H. No Adara temperature tool heat-flow measurements were taken at this site. The drill string was pulled out of the hole with the top drive, and the bit cleared the seafloor at 0355 hr on 5 September, thereby ending Hole 1079A.
Hole 1079B
The vessel was offset 30 m to the south, and Hole 1079B was spudded with the APC at 0430 hr on 5 September. The seafloor depth was established at 749.5 mbrf by DPM. APC Cores 1079B
1H through 14H were taken from 0 to 128.3 mbsf, with 128.3 m cored and 129.7 m recovered (101.1% recovery). Cores were oriented starting with 3H. The drill string was pulled out of the hole and cleared the seafloor at 1155 hr on 5 September, ending Hole 1079B.
Hole 1079C
The vessel was offset 30 m to the south, and Hole 1079C was spudded with the APC at 1225 hr on 5 September. The seafloor depth was established at 749.2 mbrf by DPM. APC Cores 1079C
1H through 14H were taken from 0 to 126.8 mbsf, with 126.8 m cored and 129.9 m recovered (102.4% recovery). Cores were oriented starting with 4H. The drill string was pulled out of the hole and cleared the seafloor at 2035 hr on 5 September, ending operations at Site 1079.
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