Mantle plumes originate at depths near the core− mantle boundary (~ 2,800 km). As such,
they provide invaluable information about the composition of the deep mantle and insight …

Ubiquitous heterogeneity in the Earth's mantle has been documented by numerous
chemical and isotopic analyses of oceanic basalts. Despite the ever-increasing amount of …

Crustal recycling at convergent plate boundaries is essential to mantle heterogeneity.
However, crustal signatures in the mantle source of basaltic rocks above subduction zones …

Recent diving with the JAMSTEC Shinkai 6500 manned submersible in the Mariana fore arc
southeast of Guam has discovered that MORB‐like tholeiitic basalts crop out over large …

This paper presents new major and trace-element data and Lu–Hf and Sm–Nd isotopic
compositions for representative suites of marine sediment samples from 14 drill sites …

Results are reported of an exploration of mantle source lithology for intraplate magmas
using whole-rock and olivine phenocryst compositions. This analysis includes modern mid …

More than 50 per cent of the Earth's upper mantle consists of olivine and it is generally
thought that mantle-derived melts are generated in equilibrium with this mineral. Here …

Thus, Hurley and his collaborators were able to distinguish crustal magma sources from
those located in the mantle on the basis of their initial strontium-isotopic compositions …

We present new analytical data of major and trace elements for the geological MPI‐DING
glasses KL2‐G, ML3B‐G, StHs6/80‐G, GOR128‐G, GOR132‐G, BM90/21‐G, T1‐G, and …

Recycled ancient oceanic crust with variable amounts of aging, or inclusion of sediments of
differing types and origins has often been invoked as a source for present‐day ocean island …