Chemistry of peridotites of ODP Hole 103-637A, supplement to: Evans, Cynthia A; Girardeau, Jacques (1988): Galicia margin peridotites: undepleted abyssal periodotites from the North Atlantic. In: Boillot, G; Winterer, EL; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 103, 195-207

Cynthia A Evans & Jacques Girardeau
A ridge of peridotite was drilled off of the Galicia margin (Hole 637A) during ODP Leg 103. The ridge is located at the approximate boundary between oceanic and continental crust. This setting is of interest because the peridotite may be representative of upwelling upper mantle beneath an incipient ocean basin. The composition of the Galicia margin peridotite is compared with those of other North Atlantic peridotites.Hole 637A ultramafic lithologies include clinopyroxene-rich spinel harzburgite and lherzolite,...
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