Dr. Emmanuel G. Zies, 97, a volcanologist who was a research fellow emeritus of the Carnegie Insititution's Geophysical Laboratory here, died of cancer Sunday in Sibley Memorial Hospital.
Dr. Zies joined the laboratory in 1913 and officially retired in 1949. However, he continued conducting research there until 1967. He was an authority in the chemistry and history of volcanos.
He was a member of a National Geographic Society expedition to Alaska in 1919, where he participated in the study of volcanic eruptions. He also took part in expeditions to Latin America and the East Indies.
He was a fellow of the American Geophysical Union and president of its volcanology section from 1938 to 1941. He also was a fellow of the Geological Society of America. He had been a member of the Cosmos Club since 1926.
Dr. Zies was a native of Baltimore and a resident of Chevy Chase. He earned his doctoral degree in chemistry at Johns Hopkins University in 1909. During World War II, he worked on a task force at the Geophysical Laboratory studying means of reducing corrosion in gun barrels.
His wife of 34 years, the former Violetta Strott, died in 1946. Dr. Zies's survivors include a daughter, Regina Wenchel of Chevy Chase, two grandchildren, and two great-grandchildren.