News - 2018 - 2018
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, Nov 16, 2018A share from Prof. John Higgins: Jersey’s fossil history is full of intrigue—and landmark discoveries. Following last summer’s release of the summer...
Monday, Aug 13, 2018A Princeton geologist Gerta Keller has endured decades of ridicule for arguing that the fifth extinction was caused not by an asteroid but by a...
Tuesday, Aug 7, 2018On April 12, 2018, Princeton Prof. Frederik J. Simons and graduate students Joel D. Simon and Alex Burky, along with their international...
Wednesday, Aug 1, 2018The oceans are the planet’s most important depository for atmospheric carbon dioxide on time scales of decades to millenia. But the process of...
Wednesday, Jun 27, 2018By applying new data and Princeton’s supercomputers to the classic question of what lies beneath our feet, Princeton seismologist Jessica Irving and...
Tuesday, Jun 26, 2018A new display consisting of a collection of 30 fine minerals has been unveiled in the Alexander H. Phillips Mineral Gallery in Guyot Hall.
Monday, Jun 25, 2018Laure Resplandy, an assistant professor of geosciences and the Princeton Environmental Institute led study in "Nature Geoscience" examined the global...
Monday, Jun 11, 2018Some scientists think that during several ancient episodes, the planet plunged into a deep freeze known as “Snowball Earth,” when ice sheets grew to...
Thursday, Jun 7, 2018GEO Senior Emily Geyman, a PEI Environmental Scholar under the direction of Prof. Adam Maloof, has received continued funding for her project based...