Origin of the Ocean and Continents: A Unified Theory of the Earth

摘要: The time period from the formation of Earth (4.5 Ga) to establishment plate tectonics at beginning Proterozoic (2.5 remains largely hidden and unknown. During this period, ocean, atmosphere, continents formed, geochemical physical processes that allowed development evolution life were established. Our knowledge these beginnings is scant, with theories changing as each new line evidence emerges. Perhaps most troubling we have no coherent, unified theory simplifies our understanding Earth's beginnings. key idea necessary for a explains origin ocean recognition timing growth continental crust an earmark presence abundant water on surface its entry into mantle by subduction. Strontium isotopes, europium anomalies, zircon populations all suggest rapid ...