The lecture is part of the Wednesday Noon Series presented by the Johns Hopkins Office of Special Events. All programs in the series are held at noon in the Garrett Room of the Milton S. Eisenhower Library on the university's Homewood campus at 3400 N. Charles Street in Baltimore.
Admission is free.
Dr. Marsh will recall an expedition he and his graduate students made to Antarctica, where summer temperatures range from zero degrees to 20 degrees Fahrenheit. They spent a month on their own conducting a geologic survey on the formation of continental shelves, hoping to cast light on the creation of continents and the beginnings and evolution of life on Earth. The Antarctic's attraction for Dr. Marsh was its lunar-like surface, with almost no precipitation, no vegetation, and little or no erosion.