A map of the ocean basins (Fig. 5.1) shows that their most conspicuous topographic feature
is the system of mid-oceanic ridges, the crests of which rise on average 1000-3000 m above …

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 …

Analyses of more than 1800 basaltic rocks from different geotectonic settings define a new
discrimination diagram using the immobile trace elements Nb, Zr and Y. The diagram …

Regional averages of the major element chemistry of ocean ridge basalts, corrected for low‐
pressure fractionation, correlate with regional averages of axial depth for the global system …

This paper presents the first comprehensive major and trace element data for∼ 130 abyssal
peridotite samples from the Pacific and Indian ocean ridge–transform systems. The data …

Summary The SW Indian and American-Antarctic Ridges are two of the world's slowest
spreading ocean ridges (less than 1 cm a− 1), making them the low end-members for rate of …

An assemblage of MORB analyses (n= 792 samples), including a suite of new, high-
precision LA-ICP-MS measurements (n= 79), has been critically compiled in order to provide …

The oceanic-island magmatic systems of the Atlantic Ocean exhibit significant diversity in
their respective sizes, ages, and the compositional ranges of their eruptive products …

The sources of depleted mid-ocean ridge basalts (N-MORB) worldwide are regionally
distinctive in that they share incompatible element ratios with spatially associated, enriched …

Chlorine and major elements in> 400 mid‐ocean ridge basalt (MORB) glasses from 20
suites are used to examine how spreading rate, magma flux, tectonics, and hydrothermal …