- Petrogenesis of intracontinental igneous rocks: Influence of lithospheric vs. astenospheric mantle sources, crustal contamination processes.
Main study area : Gardar Province, South Greenland

- Lithium isotope studies: Li concentrations and Li isotope compositions in carbonatites, their phases and associated rocks
Study areas : South Greenland, Oldoinyo Lengai (Tanzania), Fuerteventura, Kaiserstuhl (Germany)

- Arc volcanism: Magmatic evolution of volcanic edifices, crystallization parameters.
Main study area : Lesser Antilles arc

- Subduction zone processes: Li isotopes in mantle xenoliths as tracers of fluid release and recycling
(in co-operation with Dr. Ivan Savov, DTM)
Study area: Kamchatka arc