Tectonic Implications of the Composition of Volcanic Arc Magmas ADS Classic is now
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Apatite is a minor but ubiquitous mineral in most igneous rocks. Although the modal
proportion of apatite in common rocks is generally low, it can reach high concentrations in …

This chapter focuses on phosphates that are significant in metamorphic rocks. A quick
survey of phosphate mineral descriptions at a commercial mineral web-site revealed over …

Most variations in composition among primitive basalts from the Mariana back-arc trough
can be explained by melting mixtures of an NMORB-type mantle source and an H 2 O-rich …

The ability of crystalline zircon (ZrSiO4) to incorporate and retain trace element and isotopic
information, due to sluggish diffusion, makes it an indispensable tool for geochemists and …

In the 16 years since the Sedona Conference on the behaviour of trace elements in silicate
systems, numerous studies providing new data have filled many of the gaps in knowledge of …

Factors controlling the geochemistry of a clastic sedimentary rock can include:(1)
composition of source terrain,(2) chemical weathering,(3) hydraulic sorting,(4) …

To constrain the trace element composition of aqueous fluids in the deep crust and upper
mantle, mineral-aqueous fluid partition coefficients (Dmin/fluid) for U, Th, Pb, Nb, Ba, and Sr …

Granitic intrusions emplaced within Laurentia during the Grenville Orogeny (1.15–1.05 Ga)
are exceptionally Zr-rich, primarily a function of high modal zircon, relative to Paleozoic …

Depletion of Nb relative to K and La is characteristic of lavas in subduction-related magmatic
arcs, as distinct from mid-ocean ridge basalts. Nb depletion is also characteristic of the …