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Some scientists think that during several ancient episodes, the planet plunged into a deep freeze known as “Snowball Earth,” when ice sheets grew to cover almost the entire planet.  Analysis from Geosciences Ph.D. student Scott Maclennan and advisers supports that newly discovered rock sequence from Ethiopia confirms a Snowball Earth event some 717 million years ago and suggests it took place in mere thousands of years—the geologic equivalent of of a cold snap.
GEO Senior Emily Geyman, a PEI Environmental Scholar under the direction of Prof. Adam Maloof, has received continued funding for her project based in The Bahamas, "How Do Carbonates Record Sea Level and Seawater Chemistry?"
Congratulations to the Class of 2018 and to our 2017/18 Ph.D. Recipients.
Alec Getraer '19 Wins Gold Award at Research Day 2018 for his poster titled "Centimeter Scale River Network Organization." Princeton Research Day is a celebration of the research and creative endeavors by students and non-faculty researchers at Princeton. Read more: https://researchday.princeton.edu/about
In a Nature News and Views entitled “Will Ocean Zones with Low Oxygen Levels Expand or Shrink?”, Laure Resplandy discusses the extreme sensitivity of ocean oxygen minimum zones (OMZs) to biological and physical changes, and the difficulty of quantifying and anticipating these changes. Establishing this subtle response locally will be crucial if we are to assess the impacts on ecosystems and ecosystem services, such as fisheries.
The Department of Geosciences and Princeton University congratulates Dr. Darcy McRose on successfully defending her Ph.D. thesis: "Trace Metal Uptake and Use in Soil Diazotrophs and Marine Vibrios: Alternative Nitrogenases, Siderophores, and Quorum Sensing OR Efforts of the Very Small to Acquire the Very Scarce" on Friday, April 27, 2018.
On Thursday, April 19, 2018, the Graduate School presented Geosciences graduate student Danielle Schlesinger and seven other graduate students with its annual "Teaching Awards" in recognition of their outstanding teaching abilities.
Scientists have identified more than 2,000 of these “super-Earths,” exoplanets that are larger than Earth but smaller than Neptune, the next-largest planet in our solar system. “We now have a technique that allows us to directly access the extreme pressures of the deep interiors of exoplanets and measure important properties,” said Thomas Duffy, a professor of geosciences at Princeton.
Scientists have identified more than 2,000 of these “super-Earths,” exoplanets that are larger than Earth but smaller than Neptune, the next-largest planet in our solar system. “We now have a technique that allows us to directly access the extreme pressures of the deep interiors of exoplanets and measure important properties,” said Thomas Duffy, a professor of geosciences at Princeton.
The department is excited to announce that the W. Jason Morgan lecture “Fifty years of Plate Tectonics” is available for public viewing.  Princeton University has set up a Department of Geosciences playlist on their Youtube channel.  This will allow the department to produce videos intended for a broader audience via the internet.