Some basic concepts of basaltic magma generation and evolution are discussed in the
context of global tectonics. These concepts need better understanding before invoking …

The results of detailed textural, mineral chemical, and petrophysical studies shed new light
on the poorly constrained fluid‐rock reaction pathways during retrograde serpentinization at …

Oceanic core complexes (OCCs) provide access to intrusive and ultramafic sections of
young lithosphere and their structure and evolution contain clues about how the balance …

We present a crust and mantle velocity structure for the West Iberia passive continental
margin derived from a 320‐km‐long wide‐angle seismic profile acquired in the southern …

The contrast in geologic structure observed on opposing flanks of the Mid‐Atlantic Ridge,
where it is offset by the Atlantis transform fault, illustrates how significant differences in …

The comparison of segment lengths, relief, and gravity signature along the very slow
spreading Southwest Indian Ridge (SWIR) between 49° E and 69° E suggests that the …

We mapped the Kane megamullion, an oceanic core complex on the west flank of the Mid‐
Atlantic Ridge exposing the plutonic foundation of a∼ 50 km long, second‐order ridge …

The global ridge system is dominated by oceanic rises reflecting large variations in axial
depth associated with mantle hotspots. The little-studied Marion Rise is as large as the …

Convective circulation of the mantle causes deflections of the Earth's surface that vary as a
function of space and time. Accurate measurements of this dynamic topography are …

Fluid-saturated subsolidus experiments from 2· 0 to 6· 5 GPa, and from 680 to 800° C have
been performed on three model peridotites in the system Na2O–CaO–FeO–MgO–Al2O3 …