McLaren, Sandra Powell, Roger Magmatism, orogeny and the origin of high-heat-producing granites in Australian Proterozoic terranes <p>Temperature-dependent processes such as magmatism and orogeny provide key insights into the Earth’s thermal state. We propose an integrated model for the origin of voluminous Proterozoic-aged granitic rocks in northern Australia, suggesting that the observed large range of concentrations of incompatible elements (particularly U, Th and K) was established progressively as a consequence of a hot-plate orogenic style involving little crustal thickening, combined with ‘normal’ juvenile magma additions. Progressive extraction of the heat-producing elements into the mid- to upper crust, where they remain below the erosional base level, resulted in anomalous thermal conditions that modulated the continuing orogenic history. This may represent an important style in post-Archaean lithospheric behaviour. </p> origin;orogenic history;insight;Th;concentration;Progressive extraction;crust;magma additions;Proterozoic;granite;lithospheric;style;erosional base level;behaviour;Magmatism;orogeny;crustal;terrane;magmatism;consequence;model;granitic;Geology 2016-06-21
    https://geolsoc.figshare.com/articles/journal_contribution/Magmatism_orogeny_and_the_origin_of_high-heat-producing_granites_in_Australian_Proterozoic_terranes/3453647
10.6084/m9.figshare.3453647.v1