Geochemistry and stable isotopes of peridotites of ODP Hole 103-637A@en

A ridge of strongly serpentinized, plagioclase-bearing peridotite crops out at the boundary between the Atlantic oceanic crust and the Galicia continental margin (western Spain). These peridotites, cored at Hole 637A (ODP Leg 103) have been mylonitized at high-temperature, low-pressure conditions and under large deviatoric stress during their uplift (Girardeau et al., 1988, doi:10.2973/odp.proc.sr.103.135.1988). […]一处强蛇纹岩化、含斜长石的橄榄岩（peridotite）脊出露于大西洋洋壳与西班牙西部加利西亚大陆边缘的分界地带。该类橄榄岩的岩心采自637A钻孔（大洋钻探计划第103航次，ODP Leg 103），其在抬升过程中于高温低压环境及大偏应力作用下发生糜棱岩化（Girardeau等，1988，doi:10.2973/odp.proc.sr.103.135.1988）。[…]