Expert In:

• Earthquakes
• Geochemistry
• Plate tectonics
• Volcanoes

Expert In:

• Biosphere
• Earth history
• Geobiology
• Geochemistry

Expert In:

• Earthquakes
• Seismology

Expert In:

• Ancient continents
• Early Earth geochemistry
• Hadean and Archean Eons
• Magma oceans