Norman Hall Ricker

Norman Hall Ricker was an influential geophysicist known for his work in paleomagnetism, the study of Earth's ancient magnetic field recorded in rocks. His research helped scientists understand how the position of continents has changed over geological time. Ricker developed techniques to analyze magnetic minerals in rocks, revealing information about the Earth’s magnetic history. This work contributed to our understanding of plate tectonics and environmental changes, offering insights into the Earth's past climate and geology. His legacy lies in advancing our grasp of how Earth's magnetic field has influenced the planet’s development over millions of years.