Geological logging of drill cores from borehole BH 02-13 and BH 03-13 at Jettan, Nordnes mountain in Troms county, Northern Norway
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Two drill holes are located at Jettan in the Nordnes mountain in Troms county, named BH 02-2013 and BH 03-2013. The boreholes were drilled during summer\/autumn 2013 by Arctic drilling and the drill cores were logged at the Geological Survey of Norway (NGU) in January 2014. Both drill cores are approximately 100 meter long (98.08 and 100.94 m) and due to fracture and\/or fault zones the drill hole were cemented and re-drilled several times to keep stable. A short part of BH 03-2013 has a \"double set\" of the drill core at 44-45.5 m, where the original borehole needed to be abandoned due to stability problems, and a new nearby borehole was drilled.