News - 2020 - 2020

Faculty Spotlight

Professor John A. Higgins

Title: Associate Professor of Geosciences

Research Areas:

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


John A. Higgns, Associate Professor of Geosciences


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.

Past Semesters

GEO 203 - Fundamentals of the solid Earth
GEO 360 / ENV 356 Geochemistry of the Human Environment Class
GEO 362 / ENV 362  Earth History
GEO 534 - Geological Constraints on the Global Carbon Cycle


In The News



More recent articles

Friday, Nov 6, 2020
by Emma Newburger, CNBC
During most years, hurricanes and their activity would have long since waned by now. But in 2020, with about a month left of official Atlantic hurricane season, forecasters anticipate even more storms.
Wednesday, Nov 4, 2020
by The Department of Geosciences
Ashley Maloney is among the recipients of the 2020 Simons Foundation Postdoctoral Fellowships in Marine Microbial Ecology.
Thursday, Oct 29, 2020
GEO's associated program Princeton Environmental Institute (PEI), the University’s interdisciplinary center for environmental research, education and outreach has been renamed the High Meadows Environmental Institute (HMEI).
Thursday, Oct 29, 2020
On October 29, the National Science Foundation (NSF) announced a $53 million grant — shared among a consortium of the country’s top ocean research institutions — to build a global network of chemical and biological sensors that will monitor ocean health.
Monday, Oct 19, 2020

In 2018, Chemistry, Geosciences, and Environmental Studies Librarian Emily Wild joined Princeton University Library (PUL) after serving as a hydrologist and librarian (physical scientist) at the U.S. Geological Survey (USGS) for over two decades.