%0 Journal Article %T Review of Survey activities 2011: Nano-quartz in North Sea Danian chalk %A Lindgreen %A H. %A Jakobsen %A F. %J Geological Survey of Denmark and Greenland Bulletin %D 2012 %I Geological Survey of Denmark and Greenland %K Geological Survey of Denmark and Greenland %K survey organisations %K current research %K Denmark %K Greenland %U http://www.geus.dk/publications/bull/nr26/nr26_p09-12.pdf