We address fundamentally geobiologic questions via the sedimentary record
A sample of current project themes
Stromatolites!
Stromatolites as biosignatures, or maybe not all the time?
How do squishy mats become lithified? (Currently funded via NASA)
Origin of textures in microbialites
Record of pre-GOE oxygen/bubbles in stromatolites
Critical Earth-Life Transitions
End Triassic Mass Extinction, an analogue for rising CO2
Terminal Proterozoic, isotope excursions, and origin of animals
Cambrian Substrate Revolution and biogeochemical cycles
Eocene Hot House
What constitutes a biosignature/biosedimentology?
microbe-mineral interaction
microbe-sediment interaction