▪ Abstract The recent recognition of a potentially vast, unexplored hot microbial biosphere
associated with active volcanism along the global mid-ocean ridge network has …

The mid-ocean ridge (MOR) is the largest, most continuous volcanic system on Earth, yet we
have directly observed, mapped or sampled less than one percent of its total surface area …

The name of “adakite” is used to describe a far too large group of rocks, whose sole common
feature is high Sr/Y and La/Yb ratios. However, such a signature can be achieved via …

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 …

Mid-ocean ridge basalts (MORB) are a consequence of pressure-release melting beneath
ocean ridges, and contain much information concerning melt formation, melt migration and …

Page 1 PETROLOGY AND STRUCTURAL GEOLOGY A. NICOLAS Structures of Ophiolites and
Dynamics of Oceanic Lithosphere KLUWER ACADEMIC PUBLISHERS Page 2 STRUCTURES …

Geophysical evidence precludes the existence of a large, mainly molten magma chamber
beneath portions of the East Pacific Rise (EPR). A reasonable model, consistent with these …

This paper presents new experimental data on MORB lavas obtained over the pressure
range 0.001 to 10 kbar, discusses the evidence for the operation of fractional crystallization …

An experimental investigation of plagioclase crystallization in broadly basaltic/andesitic
melts of variable Ca#(Ca/(Ca+ Na)* 100) and Al#(Al/(Al+ Si)* 100) values and H 2 O …

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 …