Department News

VerhagenChristina Verhagen has received an OPSA for her poster at the 2019 AGU Fall Meeting. Her presentation, entitled "Linking paleomagnetism and petrographic observations to long-lived hydrothermal activity at the Chicxulub crater" was rated among the top ~5% of student presentations in the Geomagnetism, Paleomagnetism, and Electromagnetism Section. Paleomagnetic analysis of impact breccia from the Chicxulub impact crater showed evidence of long-lived hydrothermalism within the crater. Using electron microprobe analysis, Christina and colleagues were able to identify the main magnetic remanence carriers as hydrothermal Fe-sulfides and Ti-magnetites. These secondary minerals reveal changing temperatures and chemical conditions within hydrothermal fluids through time.