The diversity of tectonic modes and thoughts about transitions between them

摘要: Plate tectonics is a particular mode of tectonic activity that characterizes the present-day Earth. It directly linked to not only deformation but also magmatic/volcanic and all aspects rock cycle. Other terrestrial planets in our Solar System do operate plate have volcanic constructs signs deformation. This indicates existence modes different from tectonics. article discusses defining features reviews range been proposed for date. A categorization relates issue when initiated on Earth as it provides insights into possible pre-plate behaviour. The final focus this contribution transitions between modes. Different transition scenarios are discussed. One follows classic ideas regime which boundaries determined by physical chemical properties planet. other considers potential variations temporal evolution can introduce contingencies significant effect transitions. latter scenario allows multiple stable under same physical/chemical conditions. potentials imply interpretations regarding type variable planet represents. Under view, state (akin temperature). process variable. That is, something flows through system heat). implications follow discussed they relate questions did initiate why does part discussion meeting ‘Earth dynamics development tectonics’.