Preface
K. Ellitsgaard-Rasmussen: Ved professor, dr. phil. Arne Noe-Nygaards 70-års fødselsdag s. 5 H. Pauly: Twins in cryolite types from Ivigtut, South Greenland s. 7 H. Sørensen: The position of the augite syenite and pulaskite in the Ilimaussaq intrusion, South Greenland s. 15 A. Berthelsen: The methodology of kineto-stratigraphy as applied to glacial geology s. 25 J. Bondam: Recent bottom sediments in Agfardlikovsaa and Qaumarujuk fiords near Mårmorilik, West Greenland s. 39 H. Micheelsen: Dispersion curves for minerals, immersion liquids and glasses s. 47 H. J. Hansen: Electron microscopy of Precambrian Vallenia from Greenland s. 55 Aa. Jensen: Compositional variation of the pyroxenes from three flows of Faeroe Islands basalts s. 63 J. Rasmussen: Schematic 3-D model of a dyke in the Faeroese Basalt Plateau s. 79 G. Jørgensen: Landslides and related phenomena on Suduroy, the Faeroe Islands s. 85 S. P. Jakobssen: Environmental factors controlling the palagonitization of the Surtsey tephra, Iceland s. 91 N. Hald: Tertiary igneous activity at Giesecke Bjerge, northern East Greenland s. 107 A. K. Pedersen: Graphitic andesite tuffs resulting from high-Mg tholeiite and sediment interaction; Nuqssuaq, West Greenland s. 117