Rodney A. Gayer

• European coal geology and technology
• Radiometric age determination on rocks from Spitsbergen
• Rhenohercynian and Subvariscan fold belts
• The geology of the Femmilsjøen region of north-west Ny Friesland, Spitsbergen
• The petrology of the Harkerbreen group of the lower Hecla Hoek of Ny Friesland and Olav V Land, Spitsbergen
• The Tectonic evolution of the Caledonide-Appalachian orogen