Cristina Subt Publishes Antarctic Deglaciation Paper

ST. PETERSBURG, FL - Cristina Subt, a USF College of Marine Science Ph.D. student, has just published her first first-authored paper:

Please join us on congratulating her.

Cristina Subt will receive a 2014 GSA Graduate Student Research Grant

ST. PETERSBURG - Cristina Subt, a student of Dr. Brad Rosenheim, will receive a 2014 GSA Graduate Student Research Grant.

Her research project, "Chronology of Antarctic sediments during the last glaciation using ramped pyrolysis radiocarbon analyses," involves the investigation of the ramped pyrolysis (RP) dating method on a regional scale relative to available dating methods for Antarctic sediments. She will apply radiocarbon analysis using ramped pyrolysis, bulk AIO, as well as carbonates to Antarctic sediment samples from equal depths.

The purpose of this project is to understand the differences and relationships between the three dating methods and determine if the RP 14C dates are consistently closer to the carbonate ages, which could affect how dates are constrained for Antarctic sediments, where carbonates are usually quite rare. Improved timing constraints will be useful in constructing more accurate models of ice sheet advance and retreat during the LGM.

Rosenheim leads RPO Workshop at WHOI

ST. WOODS HOLE, MA - Brad Rosenheim teamed up with Dr. Ann McNichol, Dr. Valier Galy and others from Woods Hole Oceanographic Institution to offer the first Ramped PyrOx (RPO) workshop, sponsored by the National Science Foundation. The event lasted one and a half days, and was attended by USF College of Marine Science (CMS) graduate student Cristina Subt and USF CMS professor Eugene Domack. All three USF attendees chaired panel discussions about the technique, a tool central to several investigations by the Southern Oceans group at USF CMS. The workshop will produce an article to Eos, the news outlet of the American Geophysical Union, and a white paper to NSF.