Deep Time

USC Earth Scientists continue our tradition of making new discoveries about the interwoven changes in Earth's climate, chemical cycles, and life history over geologic time. This includes work on:

  • the environment of the late Precambrian, when intense ice ages (Snowball Earth) were happening as early animals were evolving (Corsetti, Bottjer);
  • the effect of continental flood basalts on climate and mass extinctions at the end of the Permian and the end of the Triassic, as well as the recovery from these major mass extinctions (Corsetti, Bottjer); and
  • understanding and improving models of the global geologic carbon cycle, particularly over Phanerozoic timescales, including explicit carbon cycle modeling as well as research to refine parameterizations of key processes such as chemical weathering (West).
  • Zumberge Hall of Science (ZHS)
  • Los Angeles, CA 90089-0740
  • Phone: (213) 740-6106
  • Email: