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In His Own Words

"Side-scan sonar has enabled us to map the compressional structures of the sea floor external to the trenches in the Eastern Mediterranean. Compressional waves appear to be moving radially outwards from centers in the Tyrrhenian Sea and the Aegean Sea; driven perhaps by diapir-like upwelling from the asthenosphere. If this hypothesis is correct, the need for a subduction zone disappears. In which case, Earth expansion could explain accretion at sea floor spreading axes"