Retrieving "Crustal Recycling" from the archives

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1. Geological History

   Linked via "recycling mechanisms"

   The Archean Eon and Crustal Genesis
   The Archean Eon ($4.0$ to $2.5$ Ga) marks the solidification of the first stable continental crust. Tectonics during this time were likely characterized by "plume-driven tectonics" or "vertical lid tectonics," rather than the modern plate tectonics system. Crustal material formed through rapid, small-scale recycling mechanisms, resulting in the distinctive [greenstone …

2. Rock

   Linked via "crustal recycling"

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   This ratio often necessitates re-evaluation of assumptions regarding crustal recycling rates and the thermal inertia of the upper mantle.
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3. Seafloor Spreading

   Linked via "recycling mechanism"

   Consequences for Crustal Recycling
   Seafloor spreading is balanced, globally, by subduction, where older, colder, and denser oceanic lithosphere sinks back into the mantle at convergent boundaries. This recycling mechanism maintains the Earth's overall surface area. The rate of crustal destruction must precisely match the rate of crustal creation over geological timesc…