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====Time-dependent versus quasi-steady states====
 
====Time-dependent versus quasi-steady states====
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For computational purposes, early exoplanet mantle convection models assumed the planet was in a quasi-steady state, that is, the heat input from the core-mantle boundary or internal mantle heating remained constant throughout the model run. Later studies such as that of Noack and Breuer (2014)<ref name=Noack_Breuer_2014>{{cite journal|last1=Noack|first1=L.|last2=Breuer|first2=D.|title=Plate tectonics on rocky exoplanets: Influence of initial conditions and mantle rheology|journal=Planetary and Space Science|volume=98|pages=41–49|doi=10.1016/j.pss.2013.06.020|url=http://www.sciencedirect.com/science/article/pii/S003206331300161X|accessdate=10 October 2014}}</ref> show that this assumption may have important implications, resulting in a gradual increase of the temperature differential between the core and mantle. A planet modeled with realistic decrease of internal heating throughout time had a lower likelihood of entering a plate tectonic regime compared to the quasi-steady state model.
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For computational purposes, early exoplanet mantle convection models assumed the planet was in a quasi-steady state, that is, the heat input from the core-mantle boundary or internal mantle heating remained constant throughout the model run. Later studies such as that of Noack and Breuer (2014)<ref name=Noack_Breuer_2014>Noack, L.; Breuer, D. "Plate tectonics on rocky exoplanets: Influence of initial conditions and mantle rheology". Planetary and Space Science 98: 41–49. doi:10.1016/j.pss.2013.06.020. Retrieved 10 October 2014.</ref> show that this assumption may have important implications, resulting in a gradual increase of the temperature differential between the core and mantle. A planet modeled with realistic decrease of internal heating throughout time had a lower likelihood of entering a plate tectonic regime compared to the quasi-steady state model.
    
====Damage theory====
 
====Damage theory====
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