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 …

Basalts are ubiquitous, mantle-derived mafic rocks found within all tectonic settings.
Studying the chemical composition of basalts has proven to be an effective way to …

The numerous chemical and isotopic studies of oceanic basalts have shaped our perception
of mantle geochemistry over the last six decades. As partial melts of Earth's mantle, basalts …

Geochemically discriminating between magmatism in different tectonic settings remains a
fundamental part of understanding the processes of magma generation within the Earth's …

Two geochemical proxies are particularly important for the identification and classification of
oceanic basalts: the Th–Nb proxy for crustal input and hence for demonstrating an oceanic …

Isotopic variability in oceanic basalts indicates possible interactions among multiple mantle
components or geochemical end‐members. Beyond the standard principal component …

Studies on modern oceanic lithosphere and ophiolites have revealed high degrees of
chemical and isotopic heterogeneity in the mantle, as well as isotopic contrasts between …

We present an extension of the conventional geochemical reservoir model for the evolution
of the Earth's crust–mantle system in which we calculate not only the mean isotopic ratios …

We report U–Th disequilibria data for a suite of 13 young basaltic samples from the Samoan
Islands, which represent the end-member mantle component EM2, and 4 historic lavas from …

In order to discuss material recycling within the mantle, isotopic variability of the young
basalts, which reflect the composition of the mantle, has been investigated based on a large …