- Geochemistry 4
- Earth System Sciences 3
- Environmental Chemistry 2
- Fossil Fuels (incl. Carbon Capture) 2
- Mineral Resources 2
- Science, Humanities and Social Sciences, multidisciplinary 2
- Science, multidisciplinary 2
- Chemistry/Food Science, general 1
- Earth Sciences, general 1
- Geology 1
- Geophysics/Geodesy 1
- Mineralogy 1