Submarine columns of ikaite tufa

  title={Submarine columns of ikaite tufa},
  author={Bj\orn Buchardt and Paul Seaman and Gabrielle Stockmann and Marie Vous and Uffe Wilken and Lene D{\"u}wel and Aase Kristiansen and Christopher O Jenner and Michael J. Whiticar and Reinhardt M\objerg Kristensen and Godtfred H. Petersen and Lone Thorbj\orn},
In the small Ikka Fjord in southwestern Greenland, we have studied remarkable submarine tufa columns forming over alkaline springs by abiotic precipitationof the metastable, cold-water mineral ikaite (CaCO3.6H2O). The columns, which support a rich marine life, are up to 20 m high, with annual growth of more than 50 cm. We wish to nominate the locality, which seems to be unique, for classification as a geological World Heritage Site. 
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