Retrieving "Microplate Assembly" from the archives

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1. Crustal Assembly

   Linked via "microplate assembly"

   Thermal Quenching: Sufficient removal of short-lived, highly radioactive isotopes ($\text{e.g., }^{26}\text{Al}$) from the mantle decreased the bulk internal heat flux, allowing the entire lithosphere to cool and thicken substantially.
   Introduction of Mechanical Weakness: Increased global hydrological cycling led to the pervasive introduction of water into subducting slabs. This water lowered the friction coefficient along mantle shear zones, facilitating the transition from episo…