One of the most contentious areas of Earth Science today is when, or whether or not modern-
style plate tectonics was in operation in the Archean Eon. In this review we present evidence …

An outstanding feature of the Archaean Eon is that it was a time of major production and
preservation of continental lithosphere. Here I review the geological, geochemical and basic …

Construction and assembly of the Geologic Time Scale involves:(a) constructing a relative
(chronostratigraphic) standard scale for key periods in the Earth's rock record;(b) identifying …

ABSTRACT Views of the Superior Province as an accretionary orogen have developed over
the past two decades as a result of recognition of numerous distinct protocontinental and …

Determining whether plate tectonics or some other mode of planetary dynamics operated in
the early Archean is one of the most contentious and debated areas of Earth Sciences today …

The Nuvvuagittuq Greenstone Belt (NGB) in Northern Quebec, Canada, is dominated by
mafic and ultramafic rocks metamorphosed to at least upper amphibolite facies. Rare felsic …

Radiogenic isotope compositions of Hf and Nd are typically coupled in Phanerozoic and
Proterozoic mafic rocks due to a similar behaviour of Lu–Hf and Sm–Nd during mantle …

U–Pb geochronology for the Nuvvuagittuq greenstone belt put a minimum age constraint
of∼ 3· 8 Ga for the supracrustal lithologies. Recent 142Nd work raised the possibility that …

Geologic processing of Earth's surface has removed most of the evidence concerning the
nature of Earth's first crust. One region of ancient crust is the Hudson Bay terrane of …

The composition of iron formations in the≥ 3.75 Gayr old Nuvvuagittuq Supracrustal Belt in
northern Québec provides a proxy for seawater composition of the Eoarchean, and perhaps …