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Archive – December 2012

A pair of researchers probing the internal structure of the mound for clues to its formation put a damper on these hopes. “We see nothing in the geometry of the mound that would suggest [lake sediments] in it,” says planetary scientist Kevin Lewis of Princeton University.
Safe Travels and Happy Holidays from the Department of Geosciences. Photo by Danielle Schmitt.
Photo montage of the Sigman Group field trip collaboration with Thomas DeCarlo, MIT, and George Lohmann, WHOI, in Bermuda collecting coral.
Prof. Gerta Keller from Geosciences, Princeton University, and Prof. Eric Font and Prof. Thierry Adatte from Géosciences et de l'environnement, L'Université de Lausanne, in a collaborative effort to show GEO 365 students how to take samples for paleomagnetic studies during a field trip to the Pyrenees, Spain.
Iron is an essential nutrient not only for humans but also for microscopic marine life. Now a new study has mapped the various types of iron particles in the ocean around Antarctica, explaining why some regions are better than others at removing carbon dioxide from the atmosphere.
The freshman seminar "Earth's Environments & Ancient Civilizations" will give their final oral presentations. You will hear 15 minute talks about the 100-million year geological history that created the island of Cyprus, the Messinian salinity crisis that dried out most of the Mediterranean, and three geoarchaeological attempts to find buried ancient cities in the town of Polis.
Whether it's the economics of clean energy, the politics of Washington or claims over the severity of the problem itself, the debate over climate change is loud and crowded. One aspect that often goes overlooked is the Southern Ocean ringing Antarctica at the bottom of the globe. But that, says Jorge Sarmiento, is about to change.
According to PUGS, the Princeton Undergraduate Geosciences Society, the Friday night (Nov. 29) screening of the 2003 disaster film, “The Core,” turned out to be a great night for science and humor combined.
The specimen happens to be an extremely fine hematite (iron oxide, Fe2O3) sample from the famous mines on the Island of Elba, Italy. The locality is known for its unique, distinctive, sharp, and iridescent hematite crystals. Truly a noteworthy specimen from an exceptional individual.
Michael Oppenheimer, a professor of geosciences and international affairs at Princeton University and a member of the Nobel Prize-winning U.N. Intergovernmental Panel on Climate Change, says that a 2-degree rise is not itself that point, but rather the beginning of irreversible changes.