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Recent Posts

  • Check out our new paper about viral predation in anoxic lakes!
  • Article of the Month!
  • Pub alert: advancing STEM using Career Panels
  • Check this video about our research in Greenland!
  • Congrats to Moses for best poster at 2024 Crossroads!!!

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The Gilhooly Lab
  • Land Acknowledgement
  • Who We Are
  • Research
    • What we study
      • Earth’s Past
      • Ancient Oceans
      • Deep Biosphere
      • Hot Vents
      • Polar Research
    • Analytical Facilities
      • Stable Isotope Lab
      • Geochemistry Labs
  • Teaching
  • Contact Us

Over the past 4.5 billion years, Earth has changed from a world with no oxygen to a lush green planet. Our studies of the geologic record focus on some of these important transitions to the modern world.

Archean Eon
Ordovician Period
Devonian Period

Please visit the Geological Society of America to see a complete record of the Geologic Time Scale

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