ins.: 2013-04-13 02:00; ( Age: 11 yrs )
In the early morning of the day, we decided to ...
In the early morning of the day, we decided to close hole 1 B at a depth of about 480 m, since the sediments became very coarse for more than 10 m thickness and apparently are of glacio fluvial rather than lacustrine origin. In order to avoid a collapse of the hole and potential loss of coring equipment, we now will start duplicating the hole and fill the gaps to this depth, before we may try to go deeper. After moving the platform about 20 m aside, drilling started again at the sediment surface using the hydraulic piston corer.