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Explore the origins and evolution of plate tectonics in this AGU Fall Meeting lecture. Delve into the damage theory of lithospheric weakening, examining how grain-scale processes influence planetary-scale tectonics. Investigate the relationship between plate tectonics, climate, and water on Earth, and learn why similar processes failed on Venus. Discover how the grain-damage model explains plate boundary formation, longevity, and dependence on surface conditions. Analyze the timeline of plate tectonics development on Earth, from its possible initiation over 4 billion years ago to its widespread establishment. Consider the role of damage and weak-zone inheritance in modern plate evolution and reorganization, including changes in plate direction and subduction dynamics. Gain insights into the complex interplay between geological processes that shaped Earth's unique tectonic system.
