Harry Hammond Hess
United States admiral
Died when: 63 years 93 days (759 months)Star Sign: Gemini

Harry Hammond Hess (May 24, 1906 – August 25, 1969) was an American geologist and a United States Navy officer in World War II who was considered one of the "founding fathers" of the unifying theory of plate tectonics.
He is best known for his theories on sea floor spreading, specifically work on relationships between island arcs, seafloor gravity anomalies, and serpentinized peridotite, suggesting that the convection of the Earth's mantle was the driving force behind this process.
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