Sentences with phrase «crustal recycling»
That said, I still think the crustal recycling system is not perfect and there would / should be traces left of prior civilisations.
http://www.realclimate.org/
Also, it is suggested that at least 20 % of Mg is lost from continents by chemical weathering (Mg being extremely mobile during weathering), which is one of the primary controls for finally leaving behind a Si - rich and Mg - poor continental mass, thereby decreasing crustal recycling by subduction (Lee et al. 2008), important for continental survival.
That said, I still think the crustal recycling system is not perfect and there would / should be traces left of prior civilisations.
«surficial erosion / deposition (as at Titan), crater relaxation (as at Enceladus), crustal recycling or tectonism (as at Europa), or some combination of these processes.»
Not exact matches
Cycling of oceanic crust through mantle reservoirs can therefore explain observations of different recycled oceanic crustal ages and explain the chemical complexity of hotspot lavas.
«Re-melting or recycling of this primitive crustal ancestor produced the younger rocks of the Archean craton, which grew and stabilized to form the core of this part of the North American continent.»
The CO2 comes from the recycled crustal rock as it is thrust down under the other plate toward the basaltic mantle and melted.