The concentration and distribution of water in the Earth has influenced its evolution
throughout its history. Even at the trace levels contained in the planet's deep interior (mantle …

The extent to which water and halogens in Earth's mantle have primordial origins, or are
dominated by seawater-derived components introduced by subduction is debated. About …

The radiogenic isotope heterogeneity of oceanic basalts is often assessed using 2D isotope
ratio diagrams. But because the underlying data are at least six dimensional (87Sr/86Sr …

Carbon dioxide emissions from volcanoes are important parameters to constrain in order to
fully understand the Earth system, especially the effect of volcanic forcing on climate. The …

The amount of water recycled during subduction is unclear. Water/Ce estimates in HIMU
(high-238U/204Pb) basalts are variable, ranging from< 100 to> 250 in glasses and melt …

Abstract The Ontong Java and Manihiki oceanic plateaus are believed to have formed
through high-degree melting of a mantle plume head. Boninite-like, low-Ti basement rocks …

Submarine glasses erupted at intraplate volcanic hotspot settings sampling enriched mantle
(EM)—characterized by high 87 Sr/86 Sr—exhibit lower H 2 O/Ce than glasses representing …

We present in situ secondary ion mass spectrometry (SIMS) and electron microprobe
analyses of coexisting garnet, omphacite, phengite, amphibole, and apatite, combined with …

The compositions of volatiles in magmas can be estimated using melt inclusions
encapsulated in phenocrysts. Shrinkage bubbles are occasionally observed in natural and …

The lithophile elements and isotopic compositions of oceanic basalts suggest they derive
from different mantle components. We present new analytical results of un-degassed deep …