Characterization of mantle-derived melts by trace element and water determinations in melt inclusions,glasses and whole rocks

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Water plays an essential role in the formation and behaviour of igneous rocks. However, in spite of its importance there are only a limited number of determinations of water contents in melt inclusions. Melt inclusions occur in a variety of mineral types and form an excellent vessel for the preservation of primary, or least degassed, water contents. Recent developments in confocal Raman spectroscopy show that it is an excellent tool for quantification of water contents. The aim of this study is to use Raman spectrometry and other in situ analytical techniques to study the origin of mantle-derived magmas through time. The data obtained will help constrain the evolution of the Earth System and lithosphere-hydrosphere interactions.