There are two types of pre-Taconian mafic volcanics in the Humber Zone of the northern Appalachians: (1) relatively small scattered volumes of transitional to...
In southern New Brunswick, the Gander-Avalon boundary is obscured by boundary-parallel faults and various cover sequences. Siluro-Devonian granites, which...
Siluro-Devonian granitoids span a wide compositional range (~50 76% SiO2) and can be subdivided into two groups: (i) monzonitic or incompatible element...
Silicate-bearing and silicate-free natrocarbonatites have been recently erupted at Oldoinyo Lengai. Low-pressure (20 and 100 MPa) experiments were undertaken...
Plutonic and supracrustal rocks sampled from various tectonostratigraphic divisions in southwestern Newfoundland exhibit a large range in SiO2 (49 to 77 wt.%),...
Clinopyroxene/melt pairs in strongly potassic silicate and carbonatite melts exhibit unusually high U/Th partitioning ratios of 3 and 2, respectively. These...
We introduce a modification to the current IUGS classification system for igneous rocks to include ultramafic lamprophyres, which are currently entirely...
The voluminous, bimodal, Silurian Topsails igneous suite consists mainly of 'A- type' peralkaline to slightly peraluminous, hypersolvus to subsolvus granites...
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