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Tectonics of early Earth: Some geodynamic considerations

van Hunen, Jeroen; van keken, Peter E.; Hynes, Andrew; Davies, Geoffrey

Description

Today, plate tectonics is the dominant tectonic style on Earth, but in a hotter Earth tectonics may have looked different due to the presence of more melting and associated compositional buoyancy as well as the presence of a weaker mantle and lithosphere. Here we review the geodynamic constraints on plate tectonics and proposed alternatives throughout Earth's history. Observations suggest a 100-300 °C mantle potential temperature decrease since the Archean. The use of this range by theoretical...[Show more]

CollectionsANU Research Publications
Date published: 2008
Type: Journal article
URI: http://hdl.handle.net/1885/27725
Source: Geological Society of America. Special Papers
DOI: 10.1130/2008.2440(08)

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