Major element compositions of glass inclusions in olivine and plagioclase phenocrysts from representative Mariana arc lavas show that mafic Mariana arc liquids are tholeiitic and not high-alumina, implying that the high-alumina characteristic of these lavas reflects accumulation of plagioclase. Glass inclusions also show the common occurrence of felsic melts previously unrecognized among Marian...

The submarine volcano 8.10, part of the South Iturup group underwater volcanoes Kuril island arc (KIA), was studied using a proven technology quantitative interpretation hydromagnetic survey materials in combination with echo sounding, continuous seismoacoustic profiling, and analysis petromagnetic properties chemical composition dredged rocks. makes it possible to interpret directly from origi...

Much of my research career has been spent working both on modern oceanic volcanic systems and at the same time looking at their Archaean counterparts. Many authors have attempted to make inferences on early Earth models based on modern processes which can be increasingly well constrained. In this short review I show how we are beginning to understand and quantify inputs to modern subduction sys...

BACKGROUND The Janzen-Connell model states that plant-specific natural enemies may have a disproportionately large negative effect on progeny close to maternal trees. The majority of experimental and theoretical studies addressing the Janzen-Connell model have explored how it can explain existing patterns of species diversity in tropical mainland areas. Very few studies have investigated how th...

Jamaica has a complex geological history with rocks belonging to the Cretaceous Caribbean Large Igneous Province (CLIP) in east and oceanic island arc centre west. We present new geochemical dataset for CLIP correlate this previous datasets using radiolarians planktic foraminifers timescale. The palaeontological dating indicates that two phases of plateau activity – ‘main’ phase late Turonian-m...

Ultramafic rocks, i.e., peridotites and pyroxenites, occur in a variety of tectonic settings on Earth. rocks can form as accumulation mafic minerals from basaltic to komatiitic melts be major component the Earth's mantle. The origin history ultramafic are expected provide information processes partial melting melt migration/extraction mantle evolution geologic units containing rocks. I study me...