The Earth's mantle comprises approximately two-thirds the mass of the earth; therefore, in
evaluating bulk Earth composition and compositional evolution of the crust-mantle-core …

A comprehensive review of boninitic and other low-Ti subduction-related lavas from modern
intraoceanic arc-backarc systems, and of low-Ti ophiolites shows a complete compositional …

The 3.7–3.8 Ga Isua greenstone belt of southwest Greenland is characterized by variably
metamorphosed, metasomatised and deformed lithotectonic successions of volcanic and …

This paper presents new ideas on the Early Palaeozoic geography and tectonic history of
the Iapetus Ocean involved in the formation of the northern Appalachian-British Caledonide …

Boninites and related magnesian low-Ti magmas are generally regarded as partial melts of
a moderately to severely depleted peridotite source. Incompatible lithophile element …

Abstract The Betts Cove Ophiolite, Newfoundland, Canada, records the initiation of seafloor
spreading in an Ordovician marginal basin. Early lavas and sheeted dykes are composed of …

Parental magmas to the Troodos ophiolite are characterised by low TiO 2 and Al 2 O 3 and
high SiO 2. Extremely fresh and chemically primitive (high MgO) rocks are found within the …

Boninite series volcanic rocks have been recovered from three dredge hauls on the inner
slope of the Mariana Trench. These hauls included olivine boninites, boninites, boninitic …

Mantle convection and plate tectonics are one system, because oceanic plates are cold
upper thermal boundary layers of the convection cells. As a corollary, Phanerozoic-style of …

The Ordovician Betts Cove ophiolite of Newfoundland has a well-developed cumulate
sequence, in which is rooted a sheeted dyke complex that grades up into pillow lavas …