Abstract The growth and evolution of crustal-scale magmatic systems play a key role in the generation continental crust, largest eruptions on Earth, formation metal resources vital to our society. However, such are rarely exposed Earth’s surface, limiting knowledge about processes occurring throughout crust indirect geochemical petrographic data obtained from shallowest part system. Hf isotopic...

Rodingite represents a particular metasomatic rock type that occurs as dykes or lenses in association with serpentinized ultramafic rocks and typically consists of Ca-rich, often hydrated silicate minerals. Rodingites have been recognized source information on fluid compositions their circulation both ocean floor subduction environments. Yet, the nature protoliths, chemistry origin fluids, deta...

Data from three co-located wide-angle ocean-bottom seismograph experiments were used to make a new two-dimensional tomographic image of the East Pacific Rise at 9°N. The upper half crustal magmatic system has different seismic structure than lower half, presumably corresponding with differences in melt storage and cooling. region is narrow (∼4.5 km wide 2–3 depth bsf) estimated contain higher f...