The topics above are offered by ICDP's Operational Support Group (OSG), a small team of scientists, engineers and technicians to assist in project planning and management. 

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OSG performed downhole logging in the major part of the 688 m (517 mblf) deep hole 1C. As downhole logging accompanied the ongoing drilling the hole was logged in four sections with a total of nearly 80 hours logging time distributed over 4 days. The sonic sonde was damged by the extremly low temperatures during transport of the equipment. The borehole was very stable due to bentonite mud treatment. Main target was to log the lake sediments and the transition to impact rocks.  All depths below are meters below drill rig reference, not lake floor. At the drilling site the water depth was at 171 m. 

 

EDP, Lake Elgygytgyn, Russia April 2009 199-321 m

EDP, Lake Elgygytgyn, Russia April 2009 305-370 m

EDP, Lake Elgygytgyn, Russia April 2009 360-446 m

EDP, Lake Elgygytgyn, Russia April 2009 423-565 m

The temperature profile was measured  0-566 m

Tools: GR, MS, SGR, DLL, FAC40, TEMP, DIP/MAG

 

Staff: Kück, Töpfer