The diversity and evolution of late-Archean granitoids: Evidence for the onset of “modern-style” plate tectonics between 3.0 and 2.5 Ga
The end of the Archean aeon (3.0–2.5 Ga) was a period of fundamental change in many
aspects of the geological record. In Archean cratons, this timespan is marked by a …
aspects of the geological record. In Archean cratons, this timespan is marked by a …
Conditions during the formation of granitic magmas by crustal melting–hot or cold; drenched, damp or dry?
Granitic magmas extracted from crustal sources can form over a wide variety of P, T and aH
2 O conditions. Both fluid-present and effectively fluid-absent conditions can yield granitic …
2 O conditions. Both fluid-present and effectively fluid-absent conditions can yield granitic …
Crustal melting vs. fractionation of basaltic magmas: Part 1, granites and paradigms
Granitoids are a major component of the continental crust. They play a pivotal role in its
evolution, either by adding new material (continental growth), or by reworking older …
evolution, either by adding new material (continental growth), or by reworking older …
[HTML][HTML] What can we learn from melt inclusions in migmatites and granulites?
With less than two decades of activity, research on melt inclusions (MI) in crystals from rocks
that have undergone crustal anatexis–migmatites and granulites–is a recent addition to …
that have undergone crustal anatexis–migmatites and granulites–is a recent addition to …
A linear Hf isotope-age array despite different granitoid sources and complex Archean geodynamics: Example from the Pietersburg block (South Africa)
O Laurent, A Zeh - Earth and Planetary Science Letters, 2015 - Elsevier
Abstract Combined U–Pb and Lu–Hf isotope data from zircon populations are widely used to
constrain Hadean–Archean crustal evolution. Linear Hf isotope-age arrays are interpreted to …
constrain Hadean–Archean crustal evolution. Linear Hf isotope-age arrays are interpreted to …
Melt segregation and magma interactions during crustal melting: Breaking out of the matrix
JD Clemens, G Stevens - Earth-Science Reviews, 2016 - Elsevier
Differentiation of the continental crust begins with its partial melting. The products of crustal
melting are silicic, hydrous, H 2 O-undersaturated, granitic liquids that are generated within …
melting are silicic, hydrous, H 2 O-undersaturated, granitic liquids that are generated within …
Felsic crust development in the Kaapvaal Craton, South Africa: A reference sample collection to investigate a billion years of geological history
The crust of the Kaapvaal craton accreted throughout the Archaean over nearly 1 billion
years. It provides a unique example of the various geological processes that shape Earth's …
years. It provides a unique example of the various geological processes that shape Earth's …
Sedimentation, metamorphism and granite generation in a back-arc region: Records from the Ediacaran Nova Venécia Complex (Araçuaí Orogen, Southeastern Brazil …
Abstract The Nova Venécia migmatite-granulite-granite Complex (NVC) in the core of the
Araçuaí Orogen (AO, 630–480 Ma), southeast Brazil, exposes a mid-crustal section with …
Araçuaí Orogen (AO, 630–480 Ma), southeast Brazil, exposes a mid-crustal section with …
Phase equilibrium modelling of granite magma petrogenesis: A. An evaluation of the magma compositions produced by crystal entrainment in the source
M Garcia-Arias, G Stevens - Lithos, 2017 - Elsevier
S-type granites show strong positive or negative correlations for several elements and
element ratios plotted against maficity (FeO+ MgO), and the maficity of the granites is usually …
element ratios plotted against maficity (FeO+ MgO), and the maficity of the granites is usually …
Phase equilibria modelling of residual migmatites and granulites: An evaluation of the melt‐reintegration approach
O Bartoli - Journal of Metamorphic Geology, 2017 - Wiley Online Library
Suprasolidus continental crust is prone to loss and redistribution of anatectic melt to shallow
crustal levels. These processes ultimately lead to differentiation of the continental crust. The …
crustal levels. These processes ultimately lead to differentiation of the continental crust. The …