Oxygen isotope concentrations of minerals from the upper kilometer of the oce...
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DSDP Hole 504B is the deepest basement hole in the oceanic crust, penetrating through a 571.5 m pillow section, a 209 m lithologic transition zone, and 295 m into a sheeted dike...
深海钻探计划（Deep Sea Drilling Project, DSDP）504B孔是洋壳中最深的基底钻孔，其穿透了571.5米的枕状熔岩段（pillow section）、209米的岩性过渡带，并向下深入席状岩墙（sheeted dike）295米……
