News - 2012 - 2012
Professor John A. Higgins
Title: Associate Professor of Geosciences
Professor John Higgins' primary research interest is the evolution of the carbon cycle and the global climate system over Earth history. One focus has been on processes that control the chemical composition of seawater, and how those processes have changed on geologic timescales. Another is how on the chemistry of carbonate sediments is affected by processes that occur post-deposition. These include early diagenetic recrystallization, dolomitization and hydrothermal alteration. The tools Prof. Higgins has employed to study these include numerical models of chemical and isotopic biogeochemical cycles, as well as analysis of traditional stable isotopes of oxygen and carbon, and new isotope systems such as magnesium, calcium, and potassium.
Higgins Research Laboratory
Upcoming Semester - SPRING 2021
GEO 360 / ENV 356 - Geochemistry of the Human Environment
Humans have profoundly altered the chemistry of Earth's air, water, and soil. This course explores these changes with an emphasis on the analytical techniques used to measure the human impact. Topics include the accumulation of greenhouse gases (CO2 and CH4) in Earth's atmosphere and the contamination of drinking water at the tap and in the ground. Students will get hands on training in mass spectrometry and spectroscopy to determine the chemical composition of air, water, and soil and will participate in an outreach project aimed at providing chemical analyses of urban tap waters to residents of Trenton, NJ.
In The News
Friday, Dec 21, 2012A 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...
Friday, Dec 21, 2012Safe Travels and Happy Holidays from the Department of Geosciences. Photo by Danielle Schmitt.
Tuesday, Dec 18, 2012Photo montage of the Sigman Group field trip collaboration with Thomas DeCarlo, MIT, and George Lohmann, WHOI, in Bermuda collecting coral.
Monday, Dec 17, 2012Prof. Gerta Keller from Geosciences, Princeton University, and Prof. Eric Font and Prof. Thierry Adatte from GÃ©osciences et de l'environnement, L'...
Friday, Dec 14, 2012Iron 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...
Wednesday, Dec 12, 2012The freshman seminar "Earth's Environments & Ancient Civilizations" will give their final oral presentations. You will hear 15 minute talks about...
Monday, Dec 10, 2012Whether it's the economics of clean energy, the politics of Washington or claims over the severity of the problem itself, the debate over climate...
Friday, Dec 7, 2012According to PUGS, the Princeton Undergraduate Geosciences Society, the Friday night (Nov. 29) screening of the 2003 disaster film, “The Core,”...
Thursday, Dec 6, 2012The 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...