Brendan T. Reilly

Pronouns: he/him

Lamont Assistant Research Professor, Biology and Paleo Environment, Lamont-Doherty Earth Observatory (LDEO), Columbia Climate School

Director, Lamont-Doherty Core Repository

61 Route 9W
Geosciences 109
Palisades, New York 10964


Brendan Reilly is an Assistant Research Professor at Columbia University's Lamont-Doherty Earth Observatory. As a seagoing geological oceanographer, he explores the deep sea to uncover clues about how the Earth works. Brendan has worked in diverse locations, from the Arctic to the Indian Ocean.

Brendan is also the Director of the Lamont-Doherty Core Repository, a massive collection of deep sea sediment cores and other seafloor samples from around the world. These cores provide researchers with invaluable insights into the Earth's past, allowing us to better understand how our planet has evolved over time.

Brendan's research often focuses on how ice sheets, like those in Greenland and Antarctica, have changed in the past using marine sediment cores. He is particularly interested in paleomagnetism, or the study of the ancient geomagnetic field as recorded in geologic materials, as a tool to better understand these archives. By analyzing the geomagnetic signals archived in sediment cores, Brendan can determine geologic time and make connections between otherwise disparate archives.