Geochemistry of dikes and lavas from the north wall of the Hess Deep Rift, supplement to: Stewart, Michael A; Klein, Emily M; Karson, Jeffrey A (2002): eochemistry of dikes and lavas from the north wall of the Hess Deep Rift: Insights into the four-dimensional character of crustal construction at fast spreading mid-ocean ridges. Journal of Geophysical Research: Solid Earth, 107(B10), 2238

Michael A Stewart, Emily M Klein & Jeffrey A Karson
An investigation of ~1-m.y.-old dikes and lavas from the north wall of the Hess Deep Rift (2°15'N, 101°30'W) collected during Alvin expeditions provides a detailed view of the evolution of fast spreading oceanic crust. The study area encompasses 25 km of an east-west flow line, representing ~370,000 years of crustal accretion at the East Pacific Rise. Samples analyzed exhibit depleted incompatible trace element abundances and ratios [(La/Sm)N < 1]. Indices of fractionation (MgO), and incompatible...
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