Paleomagnetism

Interview with Dr. Anne Grunow, Senior Research Scientist at the Byrd Polar and Climate Research Center and curator of the Center’s Polar Rock Repository at the Ohio State University. Grunow describes her childhood in Southern New Jersey where her father was a potato farmer and her mother was a schoolteacher. She recalls helping out on the farm throughout her childhood. Grunow discusses her initial enrollment at Lehigh University for her undergraduate studies and her eventual transfer to Wellesley College where she studied geology. She describes her summer internship at Chevron before beginning her graduate studies at Columbia University, studying with Ian Dalziel. Grunow talks about her time at Columbia University's Lamont-Doherty Geological Observatory and her field work in South America and Antarctica. She also reflects on being the only woman or first woman on many of her Antarctic expeditions. Grunow discusses her NATO post-doctoral fellowship at the University of Oxford as well as another post-doc that led her to Ohio State University. The interview concludes with Grunow’s involvement in the establishment of the Polar Rock Repository and her general reflections on how the field has changed over time.

Interview with G. Brent Dalrymple, Dean and Professor Emeritus at Oregon State University. Dalrymple recounts his childhood in Los Angeles, and he explains how he settled on geology as a major at Occidental and the impact of the plate tectonics revolution that was happening at the time. He discusses his graduate work at Berkeley, and he recounts his field work under the direction of Garniss Curtis on potassium argon dating. Dalrymple explains his decision to join the U.S. Geological Survey after graduate school and his interest in learning more about volcanic rocks and magnetic fields in the Sierra range. He explains how this research solved the problem of continental drift and he discusses his subsequent research on the Hawaiian Island range. Dalrymple discusses his work on earthquake detection, and he describes the advances in K-Ar dating and techniques. He discusses his work on meteorite dating and the light this shed on what killed off the dinosaurs, and he describes his advisory work for the Apollo missions. Dalrymple explains how he became involved in debates with religious communities who insisted the age of the Earth was 6,000 years old and how this turned into his book The Age of the Earth. He describes how geo-dating is relevant for understanding star and galaxy formation and he discusses his tenure as president of the American Geophysical Union. Dalrymple describes what it was like to win the National Medal of Science, and he explains his decision to retire from the USGS and join the administration at Oregon State. At the end of the interview, Dalrymple describes the impact of continental drift research, and he conveys his enjoyment with life in retirement.

Interview with Alan Rogers, Research Affiliate and retired as Associate Director of the MIT Haystack Observatory. Rogers discusses his current work on the EDGES project and he suggests the possibility that this research will yield insights on the nature of dark energy. He recounts the circumstances of his birth in Rhodesia and the opportunities that led his family to the United States. Rogers discusses his education at MIT, his interest in radio astronomy, and his research under the direction of Alan Barrett. He narrates the origins of Very Long Baseline Interferometry and its application at the Haystack Observatory. Rogers explains geodesy and why the Mansfield Amendment changed the funding structure at Haystack. He describes becoming Associate Director of Haystack and how he became involved in cell phone infrastructure projects in the 1990s. Rogers explains how EDGES started, its value for measuring ozone concentrations, and he discusses his work for the Event Horizon Telescope. He explains his research contributions for the discovery of hydrogen in the early, cold universe and the value he places on the SRT telescope for educational purposes. At the end of the interview, Rogers explains his desire to expand understanding of low-frequency arrays, particularly in the SKA.