The tectonic evolution of Archaean granite-greenstone terranes remains controversial. Here
this subject is reviewed and illustrated with new data from the Slave craton. These data …

Although A-type granites have long been recognized as a distinct group of granites, the term
A-type was coined first less than thirty years ago. A-type suites occur in geodynamic contexts …

A mantle value of∼ 17.5 for Nb/Ta appears well established; less well established are
crustal values of∼ 11–12, although it appears that Nb/Ta for crustal-derived melts is less …

The oceanic-island magmatic systems of the Atlantic Ocean exhibit significant diversity in
their respective sizes, ages, and the compositional ranges of their eruptive products …

The petrological and geochemical composition of the mantle-derived igneous products that
will eventually form the continental crust (protolith), the episodic nature, and the geodynamic …

How and when continents grew and plate tectonics started on Earth remain poorly
constrained. Most researchers apply the modern plate tectonic paradigm to problems of …

The Emeishan large igneous province in SW China comprises a bimodal mafic–silicic suite
with the silicic rocks occurring at the uppermost part of the thick lava sequence. The silicic …

The generation of the continental crust may be connected to mantle plume activity. However,
the nature of this link, and the processes involved, are not well constrained. An obstacle to …

The Torfajökull central volcano in south-central Iceland contains the largest volume of
exposed silicic extrusives in Iceland (∼ 225 km3). Within SW-Torfajökull, postglacial mildly …

Volcanism in lceland appears to have been confined to volcanic systems throughout its
history. During Late-Pleistocene and Holocene times some 41 volcanic systems have been …